Public water system · TX2460110
ActiveBlock House MUD
At a glance
Block House MUD (PWSID TX2460110) is an active community water system in Williamson County, Texas. It reports serving 6,618 people through 2,206 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 December 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,618
Service connections
2,206
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Block House MUD compare with other water systems in Williamson County?
By EPA's size categories, Block House MUD is a medium system (3,301 to 10,000 people). Williamson County has 51 active public water systems. Its population served is about half of the county average of 13,777 people per system, and accounts for 0.9% of the 702,636 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 Block House 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 Block House MUD?
EPA lists Block House 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. 33 of the 51 active systems in Williamson County (65%) are also owned by a local government.
Does Block House MUD have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2013. The violations listed here began between September 1991 and December 2013. By type: 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2013-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1992-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-12-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Block House MUD: frequently asked questions
Who runs Block House MUD?
Block House MUD (PWSID TX2460110) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Block House MUD serve?
Block House MUD reports serving 6,618 people through 2,206 service connections in Williamson County, Texas.
Where does Block House 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 Block House 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 December 2013. 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 Block House 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 December 2013. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Block House MUD's water quality report?
As a community water system, Block House 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 Williamson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Georgetown | Williamson | 191,639 | Community | Surface water |
| City of Round Rock | Williamson | 130,662 | Community | Surface water |
| City of Leander | Williamson | 98,330 | Community | Surface water |
| City of Cedar Park | Williamson | 86,939 | Community | Surface water |
| Jonah Water Sud | Williamson | 29,861 | Community | Purchased surface water |
| City of Hutto | Williamson | 29,580 | 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, “Block House MUD, PWSID TX2460110, Texas”, https://aquacensus.com/water-systems/texas/block-house-mud-tx2460110 (data as of October 1, 2026).