Public water system · PA5630045
ActiveTri Cnty Jt Muni Auth
At a glance
Tri Cnty Jt Muni Auth (PWSID PA5630045) is an active community water system in Washington County, Pennsylvania. It reports serving 10,100 people through 3,400 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
10,100
Service connections
3,400
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Tri Cnty Jt Muni Auth compare with other water systems in Washington County?
By EPA's size categories, Tri Cnty Jt Muni Auth is a large system (10,001 to 100,000 people). Washington County has 26 active public water systems, and Tri Cnty Jt Muni Auth is the 2nd-largest of them by population served. Its population served is about 5.8 times the county average of 1,750 people per system, and accounts for 22% of the 45,508 people reported by systems filed under the county. Across Pennsylvania, the 7,217 active systems average 1,741 people each. Nationally, the average active community water system reports serving 6,703 people, so Tri Cnty Jt Muni Auth is about 51% 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. Pennsylvania has 1,762 active community water systems, 24% of the state's 7,217 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 246 Pennsylvania systems (3.4%) list surface water as their primary source.
Who owns and regulates Tri Cnty Jt Muni Auth?
EPA lists Tri Cnty Jt Muni Auth as owned by a local government. The PA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 26 active systems in Washington County (31%) are also owned by a local government.
Does Tri Cnty Jt Muni Auth have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 2025. The violations listed here began between July 2024 and October 2025. By type: 4 contaminant level above the legal limit, 3 public notice, recordkeeping or other, 3 required treatment not met, 1 reporting and 1 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (4 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2025-10-20 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-09-09 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2025-09-09 | ReportingNotify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) · code 4F | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-09-03 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-09-03 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Unaddressed |
| 2025-08-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-06-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2025-05-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | 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.
Tri Cnty Jt Muni Auth: frequently asked questions
Who runs Tri Cnty Jt Muni Auth?
Tri Cnty Jt Muni Auth (PWSID PA5630045) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Tri Cnty Jt Muni Auth serve?
Tri Cnty Jt Muni Auth reports serving 10,100 people through 3,400 service connections in Washington County, Pennsylvania.
Where does Tri Cnty Jt Muni Auth get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Tri Cnty Jt Muni Auth have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in October 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 Tri Cnty Jt Muni Auth'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, 7 are health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Tri Cnty Jt Muni Auth's water quality report?
As a community water system, Tri Cnty Jt Muni Auth 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Auth of Boro of Charleroi | Washington | 27,000 | Community | Surface water |
| Bentleyville Muni Auth | Washington | 2,600 | Community | Purchased surface water |
| Ellsworth Boro Water Dept | Washington | 1,250 | Community | Purchased surface water |
| Sheetz Inc. #209 | Washington | 911 | Transient non-community | Groundwater |
| Avella Area School District | Washington | 850 | Non-transient non-community | Groundwater |
| Donegal Township | Washington | 820 | 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, “Tri Cnty Jt Muni Auth, PWSID PA5630045, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/tri-cnty-jt-muni-auth-pa5630045 (data as of October 1, 2026).