EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Harris, Texas

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems329active CWS · pop. 2,500+
Population served5,670,332reported total; may overlap
Current violation flag11.9%39 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Harris

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
City Of HoustonTX10100132,970,543Surface waterNo current violation flagged
City Of PasadenaTX1010293152,000Surface water purchasedOther current violation flag
Clear Lake City Water AuthorityTX101005689,702Surface water purchasedNo current violation flagged
City Of BaytownTX101000386,004Surface water purchasedNo current violation flagged
City Of Houston Ud 5 - KingwoodTX101034880,073Ground waterNo current violation flagged
Harris County Mud 165TX101218740,503Surface water purchasedNo current violation flagged
City Of La PorteTX101001836,569Surface water purchasedNo current violation flagged
City Of Deer ParkTX101000734,495Surface water purchasedNo current violation flagged
Northwest Harris County Mud 5TX101088425,425Surface water purchasedNo current violation flagged
City Of KatyTX101001725,253Ground waterNo current violation flagged
Bridgestone MudTX101155024,528Surface water purchasedNo current violation flagged
Timber Lane Utility DistrictTX101027824,507Ground waterNo current violation flagged
Harris County Fwsd 51TX101023819,671Surface water purchasedNo current violation flagged
Cimarron MudTX101141019,338Ground waterNo current violation flagged
City Of West University PlaceTX101002719,200Surface water purchasedCurrent monitoring/reporting flag
Harris County Mud 82TX101063018,990Ground waterNo current violation flagged
Northwest Park MudTX101059318,168Ground waterOther current violation flag
Clear Brook City MudTX101041818,108Surface water purchasedNo current violation flagged
City Of BellaireTX101000418,090Surface water purchasedOther current violation flag
Harris Montgomery Counties Mud 386TX101330518,018Ground water purchasedNo current violation flagged
Harris County Mud 53TX101072017,856Surface water purchasedOther current violation flag
City Of TomballTX101002617,532Ground waterNo current violation flagged
City Of South HoustonTX101029417,397Surface water purchasedNo current violation flagged
Harris County Mud 26TX101071517,178Ground waterOther current violation flag
Harris County Mud 71TX101182317,079Ground waterNo current violation flagged
Harris County Mud 167TX101284216,761Ground waterCurrent monitoring/reporting flag
Harris County Mud 55 Heritage ParkTX101067816,392Surface water purchasedNo current violation flagged
City Of HumbleTX101001415,616Surface water purchasedNo current violation flagged
Harris County Fwsd 61TX101023715,400Ground waterNo current violation flagged
Harris County Mud 105TX101122714,925Surface water purchasedOther current violation flag
Harris County Mud 200 CranbrookTX101200714,868Surface water purchasedNo current violation flagged
Harris County Mud 24TX101057214,796Surface water purchasedNo current violation flagged
Cnp Utility DistrictTX101042914,718Surface water purchasedNo current violation flagged
Harris County Mud 285TX101267714,268Surface water purchasedNo current violation flagged
City Of Houston Willow ChaseTX101190214,169Ground waterNo current violation flagged
Meadowhill Regional MudTX101038713,863Ground waterNo current violation flagged
Harris County Wcid 21TX101076913,845Surface water purchasedNo current violation flagged
Remington Mud 1TX101307413,746Surface water purchasedNo current violation flagged
City Of WebsterTX101022613,710Surface water purchasedNo current violation flagged
City Of SeabrookTX101006213,560Surface water purchasedNo current violation flagged
Harris County Mud 120TX101077413,197Ground waterNo current violation flagged
Newport MudTX101036213,191Surface waterNo current violation flagged
Harris County Mud 157TX101143013,062Surface water purchasedNo current violation flagged
Harris County Mud 168TX101178313,029Ground waterNo current violation flagged
Harris County Mud 1TX101053912,342Ground waterNo current violation flagged
Northampton MudTX101033712,162Ground waterNo current violation flagged
Harris County Mud 368TX101190811,835Surface water purchasedNo current violation flagged
Harris County Mud 153TX101213311,781Ground waterNo current violation flagged
Harris County Mud 81TX101058111,514Ground waterNo current violation flagged
Memorial Villages Water AuthorityTX101014811,382Surface water purchasedNo current violation flagged
Harris County Ud 6TX101050111,262Surface water purchasedNo current violation flagged
Harris County Wcid 36TX101023911,073Surface water purchasedNo current violation flagged
Cypress Hill Mud 1TX101237811,052Ground waterNo current violation flagged
Harris County Mud 49TX101146210,893Surface water purchasedNo current violation flagged
Harris County Mud 278TX101283510,584Surface water purchasedNo current violation flagged
Harris County Wcid 96TX101317510,530Ground waterNo current violation flagged
Greenwood Utility DistrictTX101055410,527Surface water purchasedNo current violation flagged
City Of Galena ParkTX101000910,487Surface water purchasedCurrent health-based flag
Harris County Mud 489TX101362810,476Ground water purchasedNo current violation flagged
Harris County Mud 230TX101274010,404Surface water purchasedNo current violation flagged

Showing the 60 largest systems by reported population served.

02 / SOURCE MIX

Surface water3 systems · 2,988,864 served
Surface water purchased146 systems · 1,459,585 served
Ground water159 systems · 1,103,851 served
Ground water purchased21 systems · 118,032 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.