Public water system · TX0700031
ActiveCity of Red Oak
At a glance
City of Red Oak (PWSID TX0700031) is an active community water system in Ellis County, Texas. It reports serving 18,577 people through 4,832 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
18,577
Service connections
4,832
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Red Oak compare with other water systems in Ellis County?
By EPA's size categories, City of Red Oak is a large system (10,001 to 100,000 people). Ellis County has 26 active public water systems. Its population served is about twice the county average of 9,591 people per system, and accounts for 7.4% of the 249,358 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 City of Red Oak is about 177% above 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 City of Red Oak?
EPA lists City of Red Oak 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. 21 of the 26 active systems in Ellis County (81%) are also owned by a local government.
Does City of Red Oak have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2013. The violations listed here began between July 2005 and March 2013. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (8 of them). EPA lists 12 as resolved. 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 |
|---|---|---|---|---|
| 2013-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-05-10 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2011-04-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2011-01-27 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2005-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2005-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
The 12 most recent 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.
City of Red Oak: frequently asked questions
Who runs City of Red Oak?
City of Red Oak (PWSID TX0700031) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does City of Red Oak serve?
City of Red Oak reports serving 18,577 people through 4,832 service connections in Ellis County, Texas.
Where does City of Red Oak 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 City of Red Oak have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 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 City of Red Oak'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 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 City of Red Oak's water quality report?
As a community water system, City of Red Oak 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 Ellis County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Waxahachie | Ellis | 50,814 | Community | Surface water |
| Rockett Sud | Ellis | 46,614 | Community | Purchased surface water |
| City of Midlothian | Ellis | 27,699 | Community | Surface water |
| City of Ennis | Ellis | 24,891 | Community | Surface water |
| Mountain Peak Sud | Ellis | 23,988 | Community | Purchased surface water |
| Sardis Lone Elm WSC | Ellis | 20,736 | 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, “City of Red Oak, PWSID TX0700031, Texas”, https://aquacensus.com/water-systems/texas/city-of-red-oak-tx0700031 (data as of October 1, 2026).