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Water quality report

Houston, TX
water quality

Drinking water across Houston’s community water systems, from EPA public records.

Check your exact address → Water Pulse
100
Excellent
City-wide average score

732

Systems serving this city

138

With PFAS detected (UCMR5)

8

Above an EPA PFAS limit

0

Unresolved health violations

Across all community water systems EPA records map to Houston. PFAS figures are from EPA UCMR5 (2023–25) monitoring; not every system was sampled.

Community water systems serving Houston

MUNICIPAL GROUNDWATER SOLUTIONSTX2270369 100› HARRIS-WALLER COUNTIES MUD 4TX2370137 100› WALLER COUNTY MUD 55TX2370152 100› MONTGOMERY COUNTY MUD 152CTX1701015 100› RIVER RANCH MUD 1TX1460189 100› EAST MONTGOMERY COUNTY MUD 5TX1700829 100› COLTON MUD 1TX1700976 100› MONTGOMERY COUNTY MUD 157TX1700937 100› HARRIS COUNTY MUD 418TX1013329 100› HARRIS COUNTY MUD 478 WATER PLANT 1TX1013866 100› HARRIS COUNTY MUD 570DTX1013839 100› HARRIS COUNTY MUD 171TX1013540 100› CENTRAL HARRIS COUNTY REGIONAL WATER AUTTX1013429 100› HARRIS COUNTY MUD 387TX1013360 100› HARRIS COUNTY IMPROVEMENT DISTRICT 13TX1013611 100› NORTH CHANNEL WATER AUTHORITYTX1013092 100› NORTH HARRIS COUNTY REGIONAL WATER AUTHOTX1013298 100› WEST HARRIS COUNTY REGIONAL WATER AUTHORTX1013303 100› FORT BEND COUNTY MUD 250TX0790621 100› NORTH FORT BEND WATER AUTHORITYTX0790511 100› FORT BEND COUNTY MUD 134ATX0790477 100› CITY OF HOUSTON~2,970,543 people served 100› CLEAR LAKE CITY WATER AUTHORITY~89,702 people served 73› CITY OF HOUSTON UD 5 - KINGWOOD~80,073 people served 100› HARRIS COUNTY MUD 165~40,503 people served 100› BRIDGESTONE MUD~24,528 people served 100› TIMBER LANE UTILITY DISTRICT~24,507 people served 100› NORTHWEST HARRIS COUNTY MUD 5~23,766 people served 100› HARRIS COUNTY FWSD 51~19,671 people served 100› CIMARRON MUD~19,338 people served 100› HARRIS COUNTY MUD 82~18,990 people served 100› NORTHWEST PARK MUD~18,168 people served 100› CLEAR BROOK CITY MUD~18,108 people served 91› HARRIS MONTGOMERY COUNTIES MUD 386~18,018 people served 100› HARRIS COUNTY MUD 53~17,856 people served 100› CITY OF SOUTH HOUSTON~17,397 people served 91› HARRIS COUNTY MUD 26~17,178 people served 100› HARRIS COUNTY MUD 71~17,079 people served 100› HARRIS COUNTY MUD 167~16,761 people served 100› HARRIS COUNTY MUD 55 HERITAGE PARK~16,392 people served 100› FORT BEND COUNTY MUD 30~15,798 people served 100› HARRIS COUNTY FWSD 61~15,400 people served 100› HARRIS COUNTY MUD 105~14,925 people served 100› PECAN GROVE MUD~14,913 people served 100› HARRIS COUNTY MUD 200 CRANBROOK~14,868 people served 100› HARRIS COUNTY MUD 24~14,796 people served 100› CNP UTILITY DISTRICT~14,718 people served 100› HARRIS COUNTY MUD 285~14,268 people served 100› CITY OF HOUSTON WILLOW CHASE~14,169 people served 100› MEADOWHILL REGIONAL MUD~13,863 people served 100› REMINGTON MUD 1~13,746 people served 100› FORT BEND COUNTY MUD 23~13,695 people served 100› SOUTHERN MONTGOMERY COUNTY MUD~13,372 people served 100› NEWPORT MUD~13,191 people served 100› HARRIS COUNTY MUD 157~13,062 people served 100› HARRIS COUNTY MUD 1~12,342 people served 100› NORTHAMPTON MUD~12,162 people served 100› HARRIS COUNTY MUD 368~11,835 people served 100› HARRIS COUNTY MUD 153~11,781 people served 100› FORT BEND COUNTY MUD 142~11,595 people served 91›

Houston water FAQ

How is Houston's water quality scored?

PurityRadar computes a 0–100 score from public EPA records for the community water systems serving Houston. The city-wide figure shown is the average of those systems.

Where does the data come from?

EPA SDWIS — the federal Safe Drinking Water Information System — covering active community water systems and their health-based violations. Every figure traces back to that public record.

Is this a substitute for testing my tap?

No. System-level data can't account for your home's own plumbing (lead service lines, fixtures). For health decisions, test your tap with a certified lab and confirm with your utility.

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