TCEQ Drinking Water Viewer
Referenced source; no source-file checksum was available.
Open sourcePublished · structured public-water-system research
Houston water quality by public water system
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
Research is incomplete; this market remains held until serving-system coverage and boundary limitations are documented with authoritative sources.
- Census state
- Partial
- Market model
- Unresolved
- Address resolution
- Not Available
Who supplies water here?
6 documented public-water-system contexts
Each card remains independent. Measurements are not averaged across cards.
VerifiedMain SystemTX1010013 · Municipal
- Utility
- Houston Public Works
- District context
- No separate district relationship recorded
- Verification
- Verified
Water source
90.3% surface water and 9.7% groundwater in the 2025 report.
Verified measurements
| Parameter | Value | Statistic | Period | Source |
|---|---|---|---|---|
| hardness as CaCO3 | 135.5 ppm | average | 2025 report | Houston Public Works 2025 Water Quality Report |
| total dissolved solids | 260 ppm | average | 2025 report | Houston Public Works 2025 Water Quality Report |
| pH | 7.8 pH | average | 2025 report | Houston Public Works 2025 Water Quality Report |
| chloride | 38.4 ppm | average | 2025 report | Houston Public Works 2025 Water Quality Report |
VerifiedKingwoodTX1010348 · Municipal
- Utility
- Kingwood
- District context
- No separate district relationship recorded
- Verification
- Verified
Water source
Groundwater system.
Verified measurements
No verified measurement rows are present for this PWS in Stage A.
VerifiedWillow ChaseTX1011902 · Municipal
- Utility
- Willow Chase
- District context
- No separate district relationship recorded
- Verification
- Verified
Water source
Groundwater system.
Verified measurements
No verified measurement rows are present for this PWS in Stage A.
VerifiedDistrict 73TX1011585 · District
- Utility
- District 73
- District context
- District 73
- Verification
- Verified
Water source
Groundwater system.
Verified measurements
No verified measurement rows are present for this PWS in Stage A.
VerifiedDistrict 82TX1011593 · District
- Utility
- District 82
- District context
- District 82
- Verification
- Verified
Water source
Groundwater system.
Verified measurements
No verified measurement rows are present for this PWS in Stage A.
VerifiedBelleau WoodsTX1011594 · Purchased Water
- Utility
- Belleau Woods
- District context
- No separate district relationship recorded
- Verification
- Verified
Water source
Purchased water from the City of Humble.
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.
- hardness as CaCO3
- total dissolved solids
- pH
- chloride
Hardness intent
Houston water hardness — by public water system, not city-wide
There is no single Houston hardness number. The City of Houston Main System reported a 2025 average of 135.5 ppm (about 7.9 grains per gallon) as calcium carbonate, with a documented range across its service area. Kingwood, Willow Chase, and the district systems report separately. A hardness value applies only to the exact PWS and reporting period it came from.
Scope rule. Match the serving system first. Never apply a Main System average to an address served by a district or purchased-water system.
Tap-safety intent
Is Houston tap water safe?
The City describes its drinking-water operation as regulated and reports meeting primary standards in its current consumer confidence report. That is a statement about system compliance for the reporting period — not a prediction of what is at any individual faucet. Plumbing materials, service lines, treatment devices, and private wells are outside what compliance data can describe.
Scope rule. System compliance evidence never implies property-level safety. Property questions need property-level evidence.
Visible provenance
Source documents supporting this market
TCEQ Water District Data
Referenced source; no source-file checksum was available.
Open sourceHouston Public Works 2025 Water Quality Report
Coverage: 2025. Referenced source; no source-file checksum was available.
Open source