Published · structured public-water-system research

Cypress water quality by district and PWS

Evidence stays scoped to the utility, district, public water system, measurement period, and source document recorded in the Stage A model.

Publication boundaryOnly accepted, published records selected by the Stage C route authority are rendered here.

Explicit uncertainty

What remains address-dependent

All 59 district contexts intersecting Cypress ZCTAs 77429 and 77433 are classified. Fifty active PWS identities are verified; the former 14-context exception set resolves to four direct PWSs, one private-utility PWS, one shared regional-service context, six inactive or dissolved districts, and two active development districts with no current drinking-water PWS or PUCT retail-utility record.

Census state: Resolved
Market model: Resolved
Address resolution: Boundary Map

Who supplies water here?

50 documented public-water-system contexts

Each card remains independent. Measurements are not averaged across cards.

VerifiedHARRIS COUNTY MUD 418TX1013329 · District

Utility: HARRIS COUNTY MUD 418
District context: HARRIS COUNTY MUD 418 · HC MUD 492
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
total trihalomethanes (TTHM)	24 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	18 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 171TX1013540 · District

Utility: HARRIS COUNTY MUD 171
District context: HARRIS COUNTY MUD 171
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedLAKE FOREST UTILITY DISTRICTTX1010494 · District

Utility: LAKE FOREST UTILITY DISTRICT
District context: LAKE FOREST UTILITY DISTRICT
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	12.7 ppb	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.179 ppm	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	7 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 69TX1010600 · District

Utility: HARRIS COUNTY MUD 69
District context: HARRIS COUNTY MUD 69
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	3.8 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0416 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	6 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedNORTHWEST HARRIS COUNTY MUD 5TX1010884 · District

Utility: NORTHWEST HARRIS COUNTY MUD 5
District context: NORTHWEST HARRIS COUNTY MUD 5
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2024 to 12/31/2026	TCEQ Drinking Water Viewer
copper	0.06 ppm	90th percentile	01/01/2024 to 12/31/2026	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	11 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	12 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 144TX1010923 · District

Utility: HARRIS COUNTY MUD 144
District context: HARRIS COUNTY MUD 144
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1 ppb	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0856 ppm	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	22 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	16 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 105TX1011227 · District

Utility: HARRIS COUNTY MUD 105
District context: HARRIS COUNTY MUD 105
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.6 ppb	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
copper	0.182 ppm	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 157TX1011430 · District

Utility: HARRIS COUNTY MUD 157
District context: HARRIS COUNTY MUD 157
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0708 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	21 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	16 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedNORTHWEST HARRIS COUNTY MUD 9TX1011599 · District

Utility: NORTHWEST HARRIS COUNTY MUD 9
District context: NORTHWEST HARRIS COUNTY MUD 9
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1 ppb	90th percentile	01/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
copper	0.1613 ppm	90th percentile	01/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	10 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	8 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedFAULKEY GULLY MUDTX1011602 · District

Utility: FAULKEY GULLY MUD
District context: FAULKEY GULLY MUD
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.5 ppb	90th percentile	01/01/2024 to 06/30/2024	TCEQ Drinking Water Viewer
copper	0.13 ppm	90th percentile	01/01/2024 to 06/30/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	12 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	10 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedNORTHWEST HARRIS COUNTY MUD 10TX1011649 · District

Utility: NORTHWEST HARRIS COUNTY MUD 10
District context: NORTHWEST HARRIS COUNTY MUD 10
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.6 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.465 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 70TX1011690 · District

Utility: HARRIS COUNTY MUD 70
District context: HARRIS COUNTY MUD 70
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.9 ppb	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.114 ppm	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	22 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	16 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedGRANT ROAD PUDTX1011991 · District

Utility: GRANT ROAD PUD
District context: GRANT ROAD PUD
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	2 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.1624 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	16 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	7 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedWEST HARRIS COUNTY MUD 15TX1012001 · District

Utility: WEST HARRIS COUNTY MUD 15
District context: WEST HARRIS COUNTY MUD 15
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	2.4 ppb	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.535 ppm	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	17 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	18 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 165TX1012187 · District

Utility: HARRIS COUNTY MUD 165
District context: HARRIS COUNTY MUD 165
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.3 ppb	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.051 ppm	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 264TX1012330 · District

Utility: HARRIS COUNTY MUD 264
District context: HARRIS COUNTY MUD 264
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.9 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.122 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	21 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	13 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedCYPRESS HILL MUD 1TX1012378 · District

Utility: CYPRESS HILL MUD 1
District context: CYPRESS HILL MUD 1
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	2.2 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.25 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	7 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 322TX1012542 · District

Utility: HARRIS COUNTY MUD 322
District context: HARRIS COUNTY MUD 322
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	2.2 ppb	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
copper	0.584 ppm	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	6 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 360TX1012897 · District

Utility: HARRIS COUNTY MUD 360
District context: HARRIS COUNTY MUD 360
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.366 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	16 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	2 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 354TX1012965 · District

Utility: HARRIS COUNTY MUD 354
District context: HARRIS COUNTY MUD 354
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.6 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.556 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	2 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 358TX1012969 · District

Utility: HARRIS COUNTY MUD 358
District context: HARRIS COUNTY MUD 358
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.58 ppm	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 172TX1012970 · District

Utility: HARRIS COUNTY MUD 172
District context: HARRIS COUNTY MUD 172
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.5 ppb	90th percentile	07/01/2024 to 12/31/2024	TCEQ Drinking Water Viewer
copper	0.153 ppm	90th percentile	07/01/2024 to 12/31/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	22 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	14 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 173TX1012971 · District

Utility: HARRIS COUNTY MUD 173
District context: HARRIS COUNTY MUD 173
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.3 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.417 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	24 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	16 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 196TX1013002 · District

Utility: HARRIS COUNTY MUD 196
District context: HARRIS COUNTY MUD 196
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.232 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	21 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	16 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 365TX1013009 · District

Utility: HARRIS COUNTY MUD 365
District context: HARRIS COUNTY MUD 365
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.29 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	3 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedREMINGTON MUD 1TX1013074 · District

Utility: REMINGTON MUD 1
District context: REMINGTON MUD 1
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.251 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	19 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	13 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 371TX1013107 · District

Utility: HARRIS COUNTY MUD 371
District context: HARRIS COUNTY MUD 371
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
copper	0.0536 ppm	90th percentile	01/01/2024 to 12/31/2026	TCEQ Drinking Water Viewer
lead	1.2 ppb	90th percentile	01/01/2024 to 12/31/2026	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	24 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	21 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 364TX1013132 · District

Utility: HARRIS COUNTY MUD 364
District context: HARRIS COUNTY MUD 364
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.15 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	1 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 391TX1013253 · District

Utility: HARRIS COUNTY MUD 391
District context: HARRIS COUNTY MUD 391
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.7 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.0685 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 389TX1013265 · District

Utility: HARRIS COUNTY MUD 389
District context: HARRIS COUNTY MUD 389
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
copper	0.0803 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
lead	0.8 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	4 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 397TX1013295 · District

Utility: HARRIS COUNTY MUD 397
District context: HARRIS COUNTY MUD 397
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.0589 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 248TX1013306 · District

Utility: HARRIS COUNTY MUD 248
District context: HARRIS COUNTY MUD 248
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.6 ppb	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.421 ppm	90th percentile	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	10 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	8 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 419TX1013335 · District

Utility: HARRIS COUNTY MUD 419
District context: HARRIS COUNTY MUD 419 · HC MUD 492
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.1 ppb	90th percentile	07/01/2024 to 12/31/2024	TCEQ Drinking Water Viewer
copper	0.0248 ppm	90th percentile	07/01/2024 to 12/31/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	16 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	14 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 396TX1013338 · District

Utility: HARRIS COUNTY MUD 396
District context: HARRIS COUNTY MUD 396
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.9 ppb	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
copper	0.0449 ppm	90th percentile	01/01/2022 to 12/31/2024	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 433TX1013350 · District

Utility: HARRIS COUNTY MUD 433
District context: HARRIS COUNTY MUD 433
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2025 to 06/30/2025	TCEQ Drinking Water Viewer
copper	0.0105 ppm	90th percentile	01/01/2025 to 06/30/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	20 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	14 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 282TX1013375 · District

Utility: HARRIS COUNTY MUD 282
District context: HARRIS COUNTY MUD 282
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.232 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	14 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	1 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 500TX1013390 · District

Utility: HARRIS COUNTY MUD 500
District context: HARRIS COUNTY MUD 500
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
copper	0.517 ppm	90th percentile	01/01/2025 to 06/30/2025	TCEQ Drinking Water Viewer
lead	0 ppb	90th percentile	01/01/2025 to 06/30/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	18 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	17 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 501TX1013403 · District

Utility: HARRIS COUNTY MUD 501
District context: HARRIS COUNTY MUD 501
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.2 ppb	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0289 ppm	90th percentile	01/01/2023 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	23 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	13 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 502TX1013494 · District

Utility: HARRIS COUNTY MUD 502
District context: HARRIS COUNTY MUD 502
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.0089 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	17 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	14 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 531TX1013531 · District

Utility: HARRIS COUNTY MUD 531
District context: HARRIS COUNTY MUD 531
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
copper	0.0411 ppm	90th percentile	01/01/2021 to 12/31/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	28 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	25 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 489TX1013628 · District

Utility: HARRIS COUNTY MUD 489
District context: HC MUD 492 · HARRIS COUNTY MUD 489
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	1.5 ppb	90th percentile	01/01/2023 to 06/30/2023	TCEQ Drinking Water Viewer
copper	0.101 ppm	90th percentile	01/01/2023 to 06/30/2023	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	29 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	14 ppb	locational running annual average; highest current-period value across reported sampling points	07/01/2026 to 09/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 490TX1013721 · District

Utility: HARRIS COUNTY MUD 490
District context: HC MUD 492 · HARRIS COUNTY MUD 490
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0326 ppm	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	9 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	1 ppb	locational running annual average; highest current-period value across reported sampling points	04/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 559TX1013762 · District

Utility: HARRIS COUNTY MUD 559
District context: HARRIS COUNTY MUD 559
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0.6 ppb	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
copper	0.0377 ppm	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	0 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 503TX1013768 · District

Utility: HARRIS COUNTY MUD 503
District context: HARRIS COUNTY MUD 503
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
copper	0.0234 ppm	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
lead	1 ppb	90th percentile	07/01/2025 to 12/31/2025	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	23 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	20 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 493TX1013790 · District

Utility: HARRIS COUNTY MUD 493
District context: HC MUD 492 · HARRIS COUNTY MUD 493
Verification: Verified

Verified measurements

Parameter	Value	Statistic	Period	Source
lead	0 ppb	90th percentile	01/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
copper	0.433 ppm	90th percentile	01/01/2026 to 06/30/2026	TCEQ Drinking Water Viewer
total trihalomethanes (TTHM)	11 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer
total haloacetic acids (HAA5)	1 ppb	locational running annual average; highest current-period value across reported sampling points	01/01/2026 to 12/31/2026	TCEQ Drinking Water Viewer

VerifiedHARRIS COUNTY MUD 438TX1013564 · District

Utility: HARRIS COUNTY MUD 438
District context: HARRIS COUNTY MUD 438
Verification: Verified

Verified measurements

No verified measurement rows are present for this PWS in Stage A.

VerifiedHARRIS COUNTY MUD 18 HEATHERWOOD HUNTERSTX1010512 · District

Utility: HARRIS COUNTY MUD 18 HEATHERWOOD HUNTERS
District context: HARRIS COUNTY MUD 018 · HARRIS COUNTY MUD 18 HEATHERWOOD HUNTERS
Verification: Verified

Verified measurements

No verified measurement rows are present for this PWS in Stage A.

VerifiedHARRIS COUNTY MUD 458TX1013644 · District

Utility: HARRIS COUNTY MUD 458
District context: HARRIS COUNTY MUD 458
Verification: Verified

Verified measurements

No verified measurement rows are present for this PWS in Stage A.

VerifiedHARRIS COUNTY MUD 374 CYPRESS CREEK LAKETX1013450 · District

Utility: HARRIS COUNTY MUD 374 CYPRESS CREEK LAKE
District context: HARRIS COUNTY MUD 374 · HARRIS COUNTY MUD 374 CYPRESS CREEK LAKE
Verification: Verified

Purchased-water relationship

HARRIS COUNTY MUD 371 (TX1013107). Supplier identity is preserved as reported; this does not establish service at a specific address.

HARRIS COUNTY MUD 433 (TX1013350). Supplier identity is preserved as reported; this does not establish service at a specific address.

Verified measurements

No verified measurement rows are present for this PWS in Stage A.

VerifiedRED BUD WATER PLANTTX1013817 · Purchased Water

Utility: RED BUD WATER PLANT
District context: HARRIS COUNTY MUD 535
Verification: Verified

Verified measurements

No verified measurement rows are present for this PWS in Stage A.

Property-level next step

What should a homeowner test?

Stage A establishes system-level records, not the water condition at a faucet. Confirm the serving PWS first, then use the documented parameters below as comparison context for a property sample.

lead
copper
total trihalomethanes (TTHM)
total haloacetic acids (HAA5)

Visible provenance

Source documents supporting this market

Tceq Dwv

TCEQ Drinking Water Viewer

Referenced source; no source-file checksum was available.

Open source

Tceq District Data

TCEQ Water District Data

Referenced source; no source-file checksum was available.

Open source

County Gis

Harris County Appraisal District MUD GIS Layer

Coverage: current quarterly layer accessed 2026-08-12. Referenced source; no source-file checksum was available.

Open source

Census Geography

U.S. Census Bureau TIGERweb 2020 Census ZIP Code Tabulation Areas

Coverage: January 1, 2025 vintage. Referenced source; no source-file checksum was available.

Open source

State Utility Registry

Public Utility Commission of Texas Water Utility Search

Referenced source; no source-file checksum was available.

Open source

Private Utility Ccr

Quadvest Red Bud Water Plant 2025 Consumer Confidence Report

Coverage: 2025. Referenced source; no source-file checksum was available.

Open source

State Regulatory Filing

PUCT Docket 56937 Quadvest and Harris County MUD No. 535 Filing

Coverage: 2024. Referenced source; no source-file checksum was available.

Open source

District Utility Page

Bridgeland Water Agency District Directory

Referenced source; no source-file checksum was available.

Open source

District Utility Page

Bridgeland Water Agency Harris County MUD No. 492 Page

Referenced source; no source-file checksum was available.

Open source

District Utility Page

Harris County MUD No. 374 Water Information

Referenced source; no source-file checksum was available.

Open source

District Ccr

Harris County MUD No. 374 Consumer Confidence Report

Referenced source; no source-file checksum was available.

Open source

What remains address-dependent

50 documented public-water-system contexts

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Purchased-water relationship

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What should a homeowner test?

Source documents supporting this market

TCEQ Drinking Water Viewer

TCEQ Water District Data

Harris County Appraisal District MUD GIS Layer

U.S. Census Bureau TIGERweb 2020 Census ZIP Code Tabulation Areas

Public Utility Commission of Texas Water Utility Search

Quadvest Red Bud Water Plant 2025 Consumer Confidence Report

PUCT Docket 56937 Quadvest and Harris County MUD No. 535 Filing

Bridgeland Water Agency District Directory

Bridgeland Water Agency Harris County MUD No. 492 Page

Harris County MUD No. 374 Water Information

Harris County MUD No. 374 Consumer Confidence Report

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