Tapcensus

Texas

Harris County drinking water quality

1,320 active public water systems serve 6,078,903 people in Harris County. 637 are compliant, 683 had at least one EPA violation in the past three years, 26 are designated serious violators, and 56 carry a health flag.

Active systems 1,320 714 community systems
People served 6.1M by public water systems
Systems with violations 683 52% of active systems, past 3 years
Serious violators 26 56 systems carry a health flag

Needs attention

Wyman Gordon Forgings TX1010911 · Non-Transient non-community system · Serves 600 4 rules violated in the past three years. Unresolved: Lead and Copper Rule and Public Notice Rule and Revised PN Rule.
JO Anns Daycare and Camp TX1012907 · Non-Transient non-community system · Serves 215 8 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Bareback Bar and Icehouse TX1012963 · Transient non-community system · Serves 175 3 rules violated in the past three years. Unresolved: Public Notice Rule and Revised PN Rule.
Lake Houston Market TX1012818 · Transient non-community system · Serves 150 3 rules violated in the past three years. Unresolved: Public Notice Rule and Revised PN Rule.
Travis Body and Trailer TX1012983 · Non-Transient non-community system · Serves 137 6 rules violated in the past three years. Unresolved: Lead and Copper Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Triangle Metal & Manufacturing CO TX1011639 · Non-Transient non-community system · Serves 134 6 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Hamilton Estates Water System TX1012916 · Community water system · Serves 123 12 rules violated in the past three years. Unresolved: Revised Total Coliform Rule, Ground Water Rule, Lead and Copper Rule, Lead and Copper Rule Revisions, and Public Notice Rule and Revised PN Rule.
Binford Place Subdivision TX1011551 · Community water system · Serves 120 10 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions and Public Notice Rule and Revised PN Rule.
Pine Oak Forest Water TX1010751 · Community water system · Serves 105 12 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions and Public Notice Rule and Revised PN Rule.
Xpo Logistics Freight Lhw TX1012923 · Non-Transient non-community system · Serves 105 2 rules violated in the past three years. Unresolved: Public Notice Rule and Revised PN Rule.

55 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

714 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Greenland Square Subdivision WS
 357 3 0
Spanish Cove Pud
 357 0 0
Orchard Crossing Subdivision
 351 0 0
Pin Oak Mobile Home Park
 345 0 0
Harris County MUD 532
 342 0 0
Heathergate Estates
 342 2 1
Imperial Valley MHC
 342 0 0
Powder Mill Estates
 342 0 0
Bender Creek Apartments
 330 2 1
Advanced RV Park
 327 1 0
Greengate Acres Subdivision
 318 1 0
Alice Acres Mobile Home Subdivision
 315 2 1
Mading Lane
 312 0 0
Brandywine Pines
 306 1 0
Forest Manor Subdivision
 300 3 1
Bayou Forest Village Mobile Home Park
 297 2 0
Lago Bello MUD 1a
 297 0 0
Rolling Oaks
 297 1 1
Cedar Bayou Park
 294 4 2
Lake Houston Storage
 294 0 0
Kirby Landing Community
 285 3 1
Sundown Mobile Home Park
 282 1 0
R&k Weiman MHP
 279 1 0
Cypress Creek Ranch
 276 0 0
Villas of Willowbrook
 276 1 0
City of Morgans Point
 275 1 0
Enchanted Valley Estates WSC
 270 1 0
Harris County MUD 477
 267 0 0
Harris County MUD 544
 264 0 0
Woodloch MHP
 264 1 0
Colony M H Subdivision WS
 261 1 0
Marks Glen Subdivision
 261 3 2
Aldine Meadows
 255 0 0
Harris County MUD 493
 255 0 0
Van Manor Mobile Home Park
 250 2 0
Bammel Oaks Estates 2
 243 0 0
Americasa at Cypress Meadows
 240 1 1
Stonetown Windfern Oaks
 240 0 0
Pitcairn WSC
 238 1 0
Harris County MUD 525
 237 0 0
Glenwood Mobile Home Subdivision
 234 2 1
Huffman Hollow Apartments
 234 1 1
Parkland Estates
 228 0 0
Waterstone Estates
 225 1 0
Harris County MUD 358
 222 0 0
Tasfield
 222 0 0
Longhorn Mobile Home Community
 220 1 0
Tall Pines Utility
 213 3 0
Carby Mobile Home Park
 210 0 0
Park Forest Water System
 210 0 0
Non-community systems (606: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Tomball Isd Cypress Rosehill Plant
 12,600 3 0
Lyndon B Johnson Space Center
 8,530 1 0
Exxon Mobil Baytown Refinery
 7,000 1 0
MD Anderson Cancer Center Alkek
 6,500 0 0
Katy Isd Mayde Creek School Complex
 5,960 0 0
Aldine Isd Grace Raymond Elementary Scho
 4,000 2 0
Harris County Facility & Property Mgmt
 3,000 6 0
Pemex Deer Park
 2,585 2 0
Tomball Isd Rosehill Elementary
 2,519 3 1
Industrial Utilities Service
 2,500 1 1
Six Flags Splashtown
 2,500 0 0
Aldine Isd Mattie a Teague Middle School
 2,013 2 0
Aldine Isd Bill J Wilson Intermediate
 2,000 2 0
Equistar Chemicals Channelview
 2,000 1 0
Harris County Pct 4 Bear Creek Pioneers
 2,000 0 0
Huffman Isd Hargrave High School
 1,700 1 1
Cfsa Schiel Road Sports Complex
 1,500 1 0
Katy-Hockley Business Park
 1,500 1 0
Smith International
 1,400 2 2
Toshiba International Corp
 1,355 0 0
Houston Country Club Water Plant
 1,300 2 1
Taqueria Buey de Y Vaca
 1,200 2 0
West Harris County MUD 16
 1,175 2 1
Laporte Rail and Terminal
 1,023 3 0
Blackhorse Storage
 1,000 2 0
Harris County MUD 63
 1,000 0 0
Harris County Pct 3 a D Dyess Park
 1,000 2 1
Houston Motorsports Park
 1,000 1 0
Houston Refining
 1,000 2 0
Dril-Quip
 950 0 0
Cypress Bible Church
 949 1 0
Thc San Jacinto Monument Shs
 900 0 0
Crossroads Fellowship Church
 800 5 1
Rohm & Haas TX Deer Park
 800 1 1
Spring Cypress Center
 800 1 0
Ineos Polyethylene North America la Port
 705 0 0
Shaffer West Little York Road Facility
 699 2 0
Albemarle Pasadena Plant
 680 0 0
Harris County MUD 406
 680 0 0
Lubrizol Deer Park Plant
 600 2 2
Sst Woodlands
 600 7 0
Sunny Flea Market
 600 0 0
Windfern Park Water System
 600 2 0
Witten Water System Dairy Queen
 600 0 0
Wyman Gordon Forgings
 600 4 2
The Church in Houston
 560 0 0
Harris County MUD 170
 500 0 0
Mercado-Sabadomingo
 500 0 0
Oceaneering
 500 2 2
Our Lady of Lavang Church
 500 1 1
S C Utilities
 500 2 1
Spring Cypress WSC
 500 0 0
Pasadena Plastics Complex
 490 2 1
147th T a N G
 450 5 1
Celanese Ltd-Clear Lake
 450 0 0
Harris County Pct 1 Tom Bass I
 450 1 0
Harris County MUD 438
 426 0 0
Harris County MUD 182
 425 0 0
Holiday Inn
 425 6 0
The Rhodes School Wallisville Road
 425 1 0
Nci Building Systems
 403 5 3
Barbours Cut Terminal
 400 1 0
First Baptist Church Huffman
 400 2 1
Northwoods Industrial Park East
 400 2 0
Salem Lutheran School
 400 0 0
Spring Business Center II
 400 0 0
Greens Parkway MUD
 387 0 0
Camfield MUD
 350 0 0
Champions Masjid
 350 0 0
Regina Caeli Parish
 350 0 0
Sahara Food Mart
 350 0 0
The Springs Event Venue
 350 2 1
Totalenergies Petrochemicals & Refining
 350 4 0
Center Point Energy Control Data Ctr
 347 0 0
Baker Hughes Emmott RD Plant
 319 8 0
Harris County Pct 3 Burroughs Park
 300 0 0
Harris County Pct 4 Four Seasons Park
 300 0 0
Lyondell Chemical CO Bayport
 300 0 0
Myrex Industries
 300 2 0
Parkway Grocery & Hardware Center
 300 0 0
Sheridan MJ & Son
 300 0 0
Target Center Water Plant
 300 0 0
Tpc Group Houston Plant
 300 1 0
West Harris County MUD 21
 300 0 0
Humble Travel Plaza
 295 0 0
Urban Market C-Store
 295 0 0
Anointed Faith Family Church
 293 0 0
Rankin Park
 290 2 0
Battleground Chlor Alkali Plant
 276 0 0
7-Eleven Store 41682
 275 2 0
Fuel Maxx 103
 275 0 0
Fuel Maxx 107
 275 0 0
Houston First Church of God
 275 2 0
Sam Houston Shell
 275 1 0
Clean Harbors Deer Park
 270 4 1
Dollar General Store 18431
 270 0 0
Quick Time
 270 0 0
Chevron Mini Stop
 260 3 0
Intercontinental Terminals Deer Park Ter
 258 1 0
Hufsmith RV Park
 252 0 0
All 606 in the systems table
Inactive systems (1,175, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Texas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.