Measurements published
Open the Houston water profile →Houston
Houston Public Works reports six separate public water systems. The Main System result is useful context, but it is not a valid citywide number for every Houston address.
PWS-level water intelligence
Greater Houston Water Quality Directory
Find source-linked water quality profiles by city and public water system across Greater Houston, with measured facts separated from interpretation.
✓ Official sources✓ System-specific✓ No invented city averages
How to use this directory
Start with the city, confirm the utility and public water system, then compare measured facts with conditions at the property.
These pages connect municipal reports and public-water-system records to household research. They do not replace official notices, assign one number to an entire mailing city, or diagnose a property without testing.
Measurements published
Open the Sugar Land water profile →Sugar Land
Sugar Land operates four independent public water systems. The 2025 report presents each system separately, so a Greatwood result must not be presented as a Sugar Land citywide average.
Partial measurements
Open the Richmond water profile →Richmond
Richmond’s official report separates the Main System from Riverpark West/MUD 121. The Main System also supplies named MUD customers, so a Richmond mailing address is not enough to select the correct table.
Utility match required
Open the Katy water profile →Katy
The City of Katy operates one documented groundwater system, but many Katy mailing addresses are served by municipal utility districts or other systems.
Partial measurements
Open the Missouri City water profile →Missouri City
Missouri City publishes separate results for Mustang Bayou and City South. City South blends Sienna MUD No. 1 groundwater with City of Missouri City surface water, so source and distribution measurements must remain distinct.
Partial measurements
Open the Pearland water profile →Pearland
Pearland’s municipal system is PWS TX0200008 and uses City groundwater plus purchased City of Houston water. Pearland-area district systems still require separate boundary and report resolution.
Partial measurements
Open the Stafford water profile →Stafford
Stafford’s water and wastewater infrastructure is operated by Fort Bend County WCID No. 2, whose 2024 report supplies the applicable system identity and measured results.
Partial measurements
Open the Rosenberg water profile →Rosenberg
Rosenberg’s 2025 report identifies the City system and publishes current regulatory results. Properties outside City utility service still require a district-level match.
Utility match required
Open the Fresno water profile →Fresno
Fresno is not one universal public water system; utility-district and address-level resolution is required.
Partial measurements
Open the Friendswood water profile →Friendswood
Friendswood’s 2025 reporting identifies a municipal system supplied by purchased Houston surface water and six Gulf Coast aquifer wells.
Partial measurements
Open the South Houston water profile →South Houston
South Houston’s 2025 report documents a blended context: purchased surface water from Houston’s Southeast Water Purification Plant and groundwater wells in the Gulf Coast aquifer.
Partial measurements
Open the Pasadena water profile →Pasadena
Pasadena’s 2025 Consumer Confidence Report identifies the main City system and current distribution results. The City report hub lists more than one report, so address-level service still matters.
Partial measurements
Open the Galena Park water profile →Galena Park
Galena Park’s 2024 report identifies a separate municipal system using City of Houston surface water and local Chicot–Evangeline aquifer groundwater.
Utility match required
Open the Channelview water profile →Channelview
Channelview addresses may be served by utility districts or other public systems rather than one citywide supplier.
Utility match required
Open the Sheldon water profile →Sheldon
Sheldon is a geographic community, not a sufficient public-water-system identifier.
Utility match required
Open the Crosby water profile →Crosby
Crosby-area addresses require supplier confirmation because geographic, postal, and utility boundaries can differ.
Utility match required
Open the Barrett water profile →Barrett
Barrett does not establish one universal utility or water profile for every address.
Utility match required
Open the Highlands water profile →Highlands
Highlands-area water information must be assigned by public water system, not by community name alone.
Utility match required
Open the Dyersdale water profile →Dyersdale
Dyersdale is a local place name rather than a verified citywide water-system boundary.
Measurements published
Open the Atascocita water profile →Atascocita
Atascocita is not one water system. Twelve district PWSs serve the established and newer communities, while City of Houston Main System serves the MUD 450 / Waters Edge pocket.
Partial measurements
Open the Humble water profile →Humble
Humble’s 2025 report identifies the City system as a blend of purchased Houston surface water and City-produced Gulf Coast aquifer groundwater.
Utility match required
Open the Westfield water profile →Westfield
Westfield is a geographic identity that may overlap multiple utility arrangements.
Utility match required
Open the Aldine water profile →Aldine
Aldine-area properties require address-specific utility resolution before water measurements can be applied.
Partial measurements
Open the Jersey Village water profile →Jersey Village
Jersey Village’s 2025 report identifies its City system, local groundwater wells, and treated surface water purchased through the City of Houston.
Partial measurements
Open the Fulshear water profile →Fulshear
Fulshear’s 2024 report provides City-system results. The City also states that its utility customers include Fort Bend County MUD 169/Cross Creek Ranch, while other growth-area districts still require separate mapping.
Measurements published
Open the Cypress water profile →Cypress
Cypress is not one public water system. All 59 district contexts intersecting ZIPs 77429 and 77433 are now classified, with 50 verified active PWS identities. Forty-five PWSs have normalized TCEQ measurement summaries; five newly resolved identity contexts remain measurement-free until PWS-specific results are normalized.
Partial measurements
Open the Tomball water profile →Tomball
Tomball’s 2025 report identifies the City’s groundwater system and measured results, while the wider Tomball mailing area includes separate utility districts.
Measurements published
Open the The Woodlands water profile →The Woodlands
The Woodlands is not one public water system. Ten Woodlands Water-managed MUDs cover the Montgomery County portion, while Harris-Montgomery Counties MUD No. 386 independently serves parts of Creekside Park in Harris County.
Utility match required
Open the Spring water profile →Spring
Spring is a broad postal and geographic identity served through multiple utility contexts.
Partial measurements
Open the Arcola water profile →Arcola
Arcola’s 2024 report identifies a municipal groundwater system and publishes current distribution and tap-sampling results.
Utility match required
Open the Brookshire water profile →Brookshire
Brookshire-area water information must stay tied to the serving public water system and its current official report.
The evidence sequence
From utility record to treatment decision
- 1. Identify the supplierUse the water bill, utility boundary, or PWS lookup.
- 2. Read the correct reportKeep system, sample year, units, ranges, and footnotes attached.
- 3. Test the propertyUse a fit-for-purpose sample when the decision is address specific.
- 4. Evaluate treatmentMatch a verified concern to an exact model claim and ownership plan.
Evidence before equipment