Public water system · TX0790332
ActiveBig Oaks MUD
At a glance
Big Oaks MUD (PWSID TX0790332) is an active community water system in Fort Bend County, Texas. It reports serving 6,450 people through 2,150 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,450
Service connections
2,150
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Big Oaks MUD compare with other water systems in Fort Bend County?
By EPA's size categories, Big Oaks MUD is a medium system (3,301 to 10,000 people). Fort Bend County has 287 active public water systems. Its population served is about twice the county average of 3,155 people per system, and accounts for 0.7% of the 905,329 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active community water system reports serving 6,703 people, so Big Oaks MUD is roughly in line with that figure.
What does “community water system” mean?
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. Texas has 4,594 active community water systems, 65% of the state's 7,078 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 1,192 Texas systems (17%) list purchased surface water as their primary source.
Who owns and regulates Big Oaks MUD?
EPA lists Big Oaks MUD as owned by a local government. The TX state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 157 of the 287 active systems in Fort Bend County (55%) are also owned by a local government.
Does Big Oaks MUD have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between October 2011 and July 2025. By type: 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 3 as resolved and 1 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2013-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
All 4 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Big Oaks MUD: frequently asked questions
Who runs Big Oaks MUD?
Big Oaks MUD (PWSID TX0790332) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Big Oaks MUD serve?
Big Oaks MUD reports serving 6,450 people through 2,150 service connections in Fort Bend County, Texas.
Where does Big Oaks MUD get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Big Oaks MUD have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Big Oaks MUD's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Big Oaks MUD's water quality report?
As a community water system, Big Oaks MUD must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Fort Bend County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Sugar Land | Fort Bend | 90,909 | Community | Surface water |
| Fort Bend County Wcid 2 | Fort Bend | 49,173 | Community | Surface water |
| City of Rosenberg | Fort Bend | 43,158 | Community | Purchased surface water |
| City of Fulshear | Fort Bend | 34,000 | Community | Groundwater |
| City of Richmond | Fort Bend | 25,326 | Community | Surface water |
| Fort Bend County MUD 30 | Fort Bend | 16,794 | Community | Purchased surface water |
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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, “Big Oaks MUD, PWSID TX0790332, Texas”, https://aquacensus.com/water-systems/texas/big-oaks-mud-tx0790332 (data as of October 1, 2026).