Galveston County, Texas — public water systems
At a glance
53 active public water systems are filed under Galveston County, Texas in EPA's SDWIS records, together reporting 432,405 people served. The largest is City of League City, which reports serving 149,557 people. 26 are community water systems serving people where they live; the other 27 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
53
Population served
432.4K
Community systems
26
Groundwater share
54.7%
How does Galveston County compare with other Texas counties?
Galveston County has the 27th-most active public water systems among the 309 counties listed for active Texas systems in EPA records; among the 234 with 3 or more systems, the median has 12. Its systems report 432,405 people served in total, the 14th-largest county figure in the state and 1.3% of the statewide total. The average system here reports serving 8,159 people, about 70% above the Texas average of 4,789. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Galveston County's drinking water come from?
By primary water source, Galveston County's active systems draw on groundwater (29, 55%), purchased surface water (23, 43%) and surface water (1, 1.9%). Overall, 55% rely mainly on groundwater (including purchased groundwater) and 45% on surface water, compared with 78% and 21% across Texas. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of League City, draws primarily on purchased surface water.
What kinds of water systems operate in Galveston County?
Galveston County's active systems break down as 26 community systems (49%), 5 non-transient non-community systems (9.4%) and 22 transient non-community systems (42%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (62%) and local government (38%).
The 50 largest water systems in Galveston County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | City of League City | Galveston | 149,557 | Community | Purchased surface water |
| 2 | City of Texas City | Galveston | 61,541 | Community | Purchased surface water |
| 3 | City of Galveston | Galveston | 52,326 | Community | Purchased surface water |
| 4 | City of Friendswood | Galveston | 43,190 | Community | Purchased surface water |
| 5 | Galveston County Wcid 1 | Galveston | 30,399 | Community | Purchased surface water |
| 6 | Bolivar Peninsula Sud | Galveston | 18,424 | Community | Purchased surface water |
| 7 | City of La Marque | Galveston | 15,154 | Community | Purchased surface water |
| 8 | San Leon MUD | Galveston | 11,622 | Community | Purchased surface water |
| 9 | Bacliff MUD | Galveston | 8,900 | Community | Purchased surface water |
| 10 | Galveston County Wcid 12 | Galveston | 8,721 | Community | Purchased surface water |
| 11 | City of Hitchcock | Galveston | 8,346 | Community | Purchased surface water |
| 12 | Galveston County Wcid 8 | Galveston | 7,065 | Community | Purchased surface water |
| 13 | Galveston County MUD 12 | Galveston | 2,900 | Community | Purchased surface water |
| 14 | Galveston County Fwsd 6 Tiki Island | Galveston | 2,568 | Community | Purchased surface water |
| 15 | Bayview MUD | Galveston | 1,839 | Community | Purchased surface water |
| 16 | The Barn at Willowynn | Galveston | 1,700 | Transient non-community | Groundwater |
| 17 | Colonel Museum Inc. | Galveston | 1,500 | Transient non-community | Purchased surface water |
| 18 | City of Jamaica Beach | Galveston | 1,075 | Community | Purchased surface water |
| 19 | City of Kemah Mmd 1 | Galveston | 741 | Community | Purchased surface water |
| 20 | Galveston County Wcid 19 | Galveston | 660 | Community | Groundwater |
| 21 | Sea Side | Galveston | 576 | Transient non-community | Purchased surface water |
| 22 | Texas City Terminal Railway Co | Galveston | 450 | Transient non-community | Purchased surface water |
| 23 | Galveston Bay Rv | Galveston | 414 | Transient non-community | Groundwater |
| 24 | Union Carbide Texas City | Galveston | 300 | Non-transient non-community | Purchased surface water |
| 25 | Tl Mini Express | Galveston | 250 | Transient non-community | Groundwater |
| 26 | Ineos Acetyls Chemicals Texas City | Galveston | 235 | Non-transient non-community | Purchased surface water |
| 27 | Watergate Yachting Center | Galveston | 200 | Transient non-community | Groundwater |
| 28 | Marquee on the Bay | Galveston | 192 | Transient non-community | Groundwater |
| 29 | Lone Pine Subdivision | Galveston | 141 | Community | Groundwater |
| 30 | Tiffany Water | Galveston | 128 | Community | Purchased surface water |
| 31 | Grab All Drive in Groc | Galveston | 125 | Transient non-community | Groundwater |
| 32 | Rain River Estates | Galveston | 100 | Community | Groundwater |
| 33 | West Bay Assembly of God | Galveston | 100 | Transient non-community | Groundwater |
| 34 | Texas City Bayou Golf Club | Galveston | 90 | Non-transient non-community | Groundwater |
| 35 | Enchanted Forest Day Care | Galveston | 85 | Non-transient non-community | Groundwater |
| 36 | Roosters Orange Bar | Galveston | 85 | Transient non-community | Groundwater |
| 37 | K & B Waterworks | Galveston | 81 | Community | Groundwater |
| 38 | Windsong Park | Galveston | 78 | Community | Groundwater |
| 39 | Haak Vineyards | Galveston | 70 | Transient non-community | Groundwater |
| 40 | Hillmans Seafoods | Galveston | 60 | Transient non-community | Groundwater |
| 41 | Seabrook Seafood | Galveston | 55 | Non-transient non-community | Groundwater |
| 42 | Rozis Mini Mart 3 | Galveston | 50 | Transient non-community | Groundwater |
| 43 | Toucans Convenience | Galveston | 50 | Transient non-community | Groundwater |
| 44 | Long Term Rv Park | Galveston | 50 | Transient non-community | Groundwater |
| 45 | Quality Mobile Home Park | Galveston | 30 | Community | Groundwater |
| 46 | Highland Bayou Estates WSC | Galveston | 30 | Community | Groundwater |
| 47 | Smt Capital Liquor & Grocery | Galveston | 30 | Transient non-community | Groundwater |
| 48 | Beacon Lakes Golf Club | Galveston | 25 | Transient non-community | Groundwater |
| 49 | Foe 3789 | Galveston | 25 | Transient non-community | Groundwater |
| 50 | Gastians Pier & Boat Ways | Galveston | 25 | Transient non-community | Groundwater |
All other water systems in Galveston County (2)
The remaining active systems filed under Galveston County, largest first, with the population each reports serving.
Galveston County water systems: frequently asked questions
How many public water systems are in Galveston County, Texas?
EPA's SDWIS records file 53 active public water systems under Galveston County, Texas: 26 community systems (49%), 5 non-transient non-community systems (9.4%) and 22 transient non-community systems (42%).
Who supplies drinking water in Galveston County, TX?
The largest community water systems filed under Galveston County are City of League City (149,557 people served), City of Texas City (61,541 people served) and City of Galveston (52,326 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Galveston County's drinking water come from groundwater or surface water?
Of the 53 active public water systems in Galveston County, 55% draw mainly on groundwater and 45% on surface water, counting purchased supplies. The largest system, City of League City, uses purchased surface water.
Where can I find a water quality report for Galveston County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 26 community systems are filed under Galveston County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Galveston County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Texas water systems
- All Texas public water systems· 7,078 active
- Wise County· 60 systems
- McLennan County· 57 systems
- Midland County· 57 systems
- Chambers County· 55 systems
- Williamson County· 51 systems
- Grayson County· 50 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Public water systems in Galveston County, Texas”, https://aquacensus.com/water-systems/texas/galveston (data as of October 1, 2026).