Public water system · TX0390002
ActiveCity of Petrolia
At a glance
City of Petrolia (PWSID TX0390002) is an active community water system in Clay County, Texas. It reports serving 514 people through 279 service connections. Its primary water source is groundwater, 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 May 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
514
Service connections
279
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Petrolia compare with other water systems in Clay County?
By EPA's size categories, City of Petrolia is a small system (501 to 3,300 people). Clay County has 10 active public water systems, and City of Petrolia is the 4th-largest of them by population served. Its population served is about 43% below the county average of 898 people per system, and accounts for 5.7% of the 8,983 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 Petrolia is well below 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 5,215 Texas systems (74%) list groundwater as their primary source.
Who owns and regulates City of Petrolia?
EPA lists City of Petrolia 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. 9 of the 10 active systems in Clay County (90%) are also owned by a local government.
Does City of Petrolia have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2026. The violations listed here began between July 2025 and May 2026. By type: 8 public notice, recordkeeping or other, 2 monitoring and 2 monitoring and reporting. The contaminant or rule involved most often is Public Notice (7 of them). EPA lists 8 as unaddressed, 2 as resolved and 2 as archived. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-05-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-04-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-04-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-03-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-01-04 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-09-20 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-07-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
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 Petrolia: frequently asked questions
Who runs City of Petrolia?
City of Petrolia (PWSID TX0390002) 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 Petrolia serve?
City of Petrolia reports serving 514 people through 279 service connections in Clay County, Texas.
Where does City of Petrolia get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Petrolia 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 May 2026. 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 Petrolia'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 May 2026. 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 Petrolia's water quality report?
As a community water system, City of Petrolia 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 Clay County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Henrietta | Clay | 3,111 | Community | Surface water |
| Dean Dale Sud | Clay | 2,492 | Community | Purchased surface water |
| Rra Arrowhead Lake Lots | Clay | 1,770 | Community | Purchased surface water |
| City of Byers | Clay | 446 | Community | Purchased surface water |
| City of Bellevue | Clay | 289 | Community | Groundwater |
| Midway Isd | Clay | 164 | Non-transient non-community | Groundwater |
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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 Petrolia, PWSID TX0390002, Texas”, https://aquacensus.com/water-systems/texas/city-of-petrolia-tx0390002 (data as of October 1, 2026).