Skip to content
AquaCensus

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
Active public water systems in Galveston County, Texas
#Water systemCountyPopulation servedTypeSource
1City of League CityGalveston149,557CommunityPurchased surface water
2City of Texas CityGalveston61,541CommunityPurchased surface water
3City of GalvestonGalveston52,326CommunityPurchased surface water
4City of FriendswoodGalveston43,190CommunityPurchased surface water
5Galveston County Wcid 1Galveston30,399CommunityPurchased surface water
6Bolivar Peninsula SudGalveston18,424CommunityPurchased surface water
7City of La MarqueGalveston15,154CommunityPurchased surface water
8San Leon MUDGalveston11,622CommunityPurchased surface water
9Bacliff MUDGalveston8,900CommunityPurchased surface water
10Galveston County Wcid 12Galveston8,721CommunityPurchased surface water
11City of HitchcockGalveston8,346CommunityPurchased surface water
12Galveston County Wcid 8Galveston7,065CommunityPurchased surface water
13Galveston County MUD 12Galveston2,900CommunityPurchased surface water
14Galveston County Fwsd 6 Tiki IslandGalveston2,568CommunityPurchased surface water
15Bayview MUDGalveston1,839CommunityPurchased surface water
16The Barn at WillowynnGalveston1,700Transient non-communityGroundwater
17Colonel Museum Inc.Galveston1,500Transient non-communityPurchased surface water
18City of Jamaica BeachGalveston1,075CommunityPurchased surface water
19City of Kemah Mmd 1Galveston741CommunityPurchased surface water
20Galveston County Wcid 19Galveston660CommunityGroundwater
21Sea SideGalveston576Transient non-communityPurchased surface water
22Texas City Terminal Railway CoGalveston450Transient non-communityPurchased surface water
23Galveston Bay RvGalveston414Transient non-communityGroundwater
24Union Carbide Texas CityGalveston300Non-transient non-communityPurchased surface water
25Tl Mini ExpressGalveston250Transient non-communityGroundwater
26Ineos Acetyls Chemicals Texas CityGalveston235Non-transient non-communityPurchased surface water
27Watergate Yachting CenterGalveston200Transient non-communityGroundwater
28Marquee on the BayGalveston192Transient non-communityGroundwater
29Lone Pine SubdivisionGalveston141CommunityGroundwater
30Tiffany WaterGalveston128CommunityPurchased surface water
31Grab All Drive in GrocGalveston125Transient non-communityGroundwater
32Rain River EstatesGalveston100CommunityGroundwater
33West Bay Assembly of GodGalveston100Transient non-communityGroundwater
34Texas City Bayou Golf ClubGalveston90Non-transient non-communityGroundwater
35Enchanted Forest Day CareGalveston85Non-transient non-communityGroundwater
36Roosters Orange BarGalveston85Transient non-communityGroundwater
37K & B WaterworksGalveston81CommunityGroundwater
38Windsong ParkGalveston78CommunityGroundwater
39Haak VineyardsGalveston70Transient non-communityGroundwater
40Hillmans SeafoodsGalveston60Transient non-communityGroundwater
41Seabrook SeafoodGalveston55Non-transient non-communityGroundwater
42Rozis Mini Mart 3Galveston50Transient non-communityGroundwater
43Toucans ConvenienceGalveston50Transient non-communityGroundwater
44Long Term Rv ParkGalveston50Transient non-communityGroundwater
45Quality Mobile Home ParkGalveston30CommunityGroundwater
46Highland Bayou Estates WSCGalveston30CommunityGroundwater
47Smt Capital Liquor & GroceryGalveston30Transient non-communityGroundwater
48Beacon Lakes Golf ClubGalveston25Transient non-communityGroundwater
49Foe 3789Galveston25Transient non-communityGroundwater
50Gastians Pier & Boat WaysGalveston25Transient non-communityGroundwater

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

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).