Public water system · OK3007505
ActiveSentinel Pws
At a glance
Sentinel Pws (PWSID OK3007505) is an active community water system in Washita County, Oklahoma. It reports serving 859 people through 574 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in August 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
859
Service connections
574
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Sentinel Pws compare with other water systems in Washita County?
By EPA's size categories, Sentinel Pws is a small system (501 to 3,300 people). Washita County has 11 active public water systems, and Sentinel Pws is the 4th-largest of them by population served. Its population served is roughly in line with the county average of 844 people per system, and accounts for 9.3% of the 9,278 people reported by systems filed under the county. Across Oklahoma, the 1,254 active systems average 2,907 people each. Nationally, the average active community water system reports serving 6,703 people, so Sentinel Pws 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. Oklahoma has 864 active community water systems, 69% of the state's 1,254 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 67 Oklahoma systems (5.3%) list purchased groundwater as their primary source.
Who owns and regulates Sentinel Pws?
EPA lists Sentinel Pws as owned by a local government. The OK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 11 of the 11 active systems in Washita County (100%) are also owned by a local government.
Does Sentinel Pws have drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in August 2021. The violations listed here began between July 2003 and August 2021. By type: 8 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (8 of them). EPA lists 10 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 |
|---|---|---|---|---|
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2009-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 10 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.
Sentinel Pws: frequently asked questions
Who runs Sentinel Pws?
Sentinel Pws (PWSID OK3007505) is a community water system owned by a local government. It is regulated by the OK state drinking water program.
How many people does Sentinel Pws serve?
Sentinel Pws reports serving 859 people through 574 service connections in Washita County, Oklahoma.
Where does Sentinel Pws get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Sentinel Pws have any drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in August 2021. 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 Sentinel Pws' 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 10 violations for this system; 1 is health-based, and the most recent began in August 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the OK state drinking water program.
Where can I find Sentinel Pws' water quality report?
As a community water system, Sentinel Pws 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 Washita County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| New Cordell Utility Authority | Washita | 2,903 | Community | Purchased surface water |
| Burns Flat Pws | Washita | 2,057 | Community | Groundwater |
| Washita Co Rwd #2 | Washita | 1,032 | Community | Groundwater |
| Dill City | Washita | 526 | Community | Groundwater |
| Canute | Washita | 524 | Community | Groundwater |
| Corn Pwa | Washita | 500 | 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, “Sentinel Pws, PWSID OK3007505, Oklahoma”, https://aquacensus.com/water-systems/oklahoma/sentinel-pws-ok3007505 (data as of October 1, 2026).