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Fort Bend County, Texas — public water systems

At a glance

287 active public water systems are filed under Fort Bend County, Texas in EPA's SDWIS records, together reporting 905,329 people served. The largest is City of Sugar Land, which reports serving 90,909 people. 176 are community water systems serving people where they live; the other 111 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

287

Population served

905.3K

Community systems

176

Groundwater share

81.2%

How does Fort Bend County compare with other Texas counties?

Fort Bend County has the 4th-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 905,329 people served in total, the 9th-largest county figure in the state and 2.7% of the statewide total. The average system here reports serving 3,155 people, about 34% below 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 Fort Bend County's drinking water come from?

By primary water source, Fort Bend County's active systems draw on groundwater (191, 67%), purchased surface water (49, 17%), purchased groundwater (42, 15%) and surface water (5, 1.7%). Overall, 81% rely mainly on groundwater (including purchased groundwater) and 19% 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 Sugar Land, draws primarily on surface water.

What kinds of water systems operate in Fort Bend County?

Fort Bend County's active systems break down as 176 community systems (61%), 37 non-transient non-community systems (13%) and 74 transient non-community systems (26%). 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 local government (55%), private (44%) and state government (1%).

The 50 largest water systems in Fort Bend County

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Active public water systems in Fort Bend County, Texas
#Water systemCountyPopulation servedTypeSource
1City of Sugar LandFort Bend90,909CommunitySurface water
2Fort Bend County Wcid 2Fort Bend49,173CommunitySurface water
3City of RosenbergFort Bend43,158CommunityPurchased surface water
4City of FulshearFort Bend34,000CommunityGroundwater
5City of RichmondFort Bend25,326CommunitySurface water
6Fort Bend County MUD 30Fort Bend16,794CommunityPurchased surface water
7City of Sugar Land - New TerritoryFort Bend15,546CommunityGroundwater
8Fort Bend County MUD 25Fort Bend15,327CommunityGroundwater
9Pecan Grove MUDFort Bend14,913CommunitySurface water
10Quail Valley Utility DistrictFort Bend14,409CommunityGroundwater
11Fort Bend County MUD 23Fort Bend13,695CommunityGroundwater
12City of Sugar Land - GreatwoodFort Bend12,368CommunityGroundwater
13Fort Bend County MUD 142Fort Bend11,595CommunityPurchased surface water
14Fort Bend County MUD 128Fort Bend10,974CommunityPurchased surface water
15Fort Bend County MUD 58Fort Bend10,629CommunityPurchased surface water
16Fort Bend County MUD 182Fort Bend10,498CommunityGroundwater
17Fort Bend County MUD 151Fort Bend10,233CommunityGroundwater
18City of Missouri City Mustang Bayou WateFort Bend9,147CommunitySurface water
19North Mission Glen MUDFort Bend9,096CommunityPurchased surface water
20Kingsbridge MUDFort Bend8,663CommunityPurchased surface water
21Sienna MUD 10Fort Bend7,824CommunityPurchased groundwater
22First Colony MUD 9Fort Bend7,818CommunityGroundwater
23Blue Ridge West MUDFort Bend7,545CommunityGroundwater
24Sienna MUD 3Fort Bend7,365CommunityPurchased groundwater
25Fort Bend County MUD 133Fort Bend7,362CommunityPurchased surface water
26Fort Bend County MUD 134bFort Bend7,356CommunityPurchased groundwater
27Fort Bend County MUD 134cFort Bend7,260CommunityPurchased groundwater
28Fort Bend County MUD 143 Water View EstaFort Bend7,245CommunityGroundwater
29Fort Bend County MUD 2Fort Bend6,819CommunityPurchased surface water
30Grand Mission MUD 1Fort Bend6,663CommunityPurchased surface water
31Big Oaks MUDFort Bend6,450CommunityPurchased surface water
32Sienna MUD 4Fort Bend6,435CommunityPurchased groundwater
33Fort Bend County MUD 35Fort Bend6,297CommunityPurchased groundwater
34Grand Mission MUD 2Fort Bend6,285CommunityPurchased groundwater
35Fort Bend County MUD 50Fort Bend6,234CommunityPurchased surface water
36Cinco MUD 14Fort Bend6,192CommunityPurchased groundwater
37Cinco Southwest MUD 4Fort Bend6,093CommunityPurchased surface water
38Fort Bend County Fwsd 1Fort Bend6,030CommunityGroundwater
39Fort Bend County MUD 146Fort Bend5,985CommunityPurchased surface water
40Fort Bend County MUD 134dFort Bend5,796CommunityPurchased groundwater
41Cinco MUD 8Fort Bend5,613CommunityPurchased groundwater
42Fort Bend County MUD 162Fort Bend5,553CommunityGroundwater
43Cinco Southwest MUD 2Fort Bend5,496CommunityPurchased surface water
44Fort Bend County MUD 26 Quail Green WestFort Bend5,424CommunityGroundwater
45Fulshear MUD 3aFort Bend5,421CommunityGroundwater
46Fort Bend County MUD 34Fort Bend5,367CommunityPurchased surface water
47Fort Bend County MUD 118Fort Bend5,346CommunityPurchased surface water
48Fort Bend County MUD 57Fort Bend5,335CommunityPurchased surface water
49Fort Bend County MUD 155Fort Bend5,292CommunityPurchased surface water
50Fort Bend County MUD 194Fort Bend5,211CommunityPurchased groundwater

All other water systems in Fort Bend County (232)

The remaining active systems filed under Fort Bend County, largest first, with the population each reports serving.

Fort Bend County water systems: frequently asked questions

How many public water systems are in Fort Bend County, Texas?

EPA's SDWIS records file 287 active public water systems under Fort Bend County, Texas: 176 community systems (61%), 37 non-transient non-community systems (13%) and 74 transient non-community systems (26%).

Who supplies drinking water in Fort Bend County, TX?

The largest community water systems filed under Fort Bend County are City of Sugar Land (90,909 people served), Fort Bend County Wcid 2 (49,173 people served) and City of Rosenberg (43,158 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 Fort Bend County's drinking water come from groundwater or surface water?

Of the 287 active public water systems in Fort Bend County, 81% draw mainly on groundwater and 19% on surface water, counting purchased supplies. The largest system, City of Sugar Land, uses surface water.

Where can I find a water quality report for Fort Bend 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. 176 community systems are filed under Fort Bend 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 Fort Bend 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 Fort Bend County, Texas”, https://aquacensus.com/water-systems/texas/fort-bend (data as of October 1, 2026).