Public water system · PA5020041
ActivePlum Boro Muni Auth
At a glance
Plum Boro Muni Auth (PWSID PA5020041) is an active community water system in Allegheny County, Pennsylvania. It reports serving 27,500 people through 10,254 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, one is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
27,500
Service connections
10,254
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Plum Boro Muni Auth compare with other water systems in Allegheny County?
By EPA's size categories, Plum Boro Muni Auth is a large system (10,001 to 100,000 people). Allegheny County has 65 active public water systems. Its population served is about 11% below the county average of 31,017 people per system, and accounts for 1.4% of the 2,016,109 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 Plum Boro Muni Auth is about 4.1 times 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 244 Pennsylvania systems (3.4%) list purchased surface water as their primary source.
Who owns and regulates Plum Boro Muni Auth?
EPA lists Plum Boro 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. 35 of the 65 active systems in Allegheny County (54%) are also owned by a local government.
Does Plum Boro Muni Auth have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2025. The violations listed here began between January 2017 and October 2025. By type: 9 monitoring and reporting, 2 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (3 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2023-05-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-05-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2020-09-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-07-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | 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.
Plum Boro Muni Auth: frequently asked questions
Who runs Plum Boro Muni Auth?
Plum Boro Muni Auth (PWSID PA5020041) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Plum Boro Muni Auth serve?
Plum Boro Muni Auth reports serving 27,500 people through 10,254 service connections in Allegheny County, Pennsylvania.
Where does Plum Boro Muni Auth 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 Plum Boro Muni Auth have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is 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 Plum Boro 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, one is 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 Plum Boro Muni Auth's water quality report?
As a community water system, Plum Boro 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 Allegheny County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pa Amer Water Co-Pittsburgh | Allegheny | 686,000 | Community | Surface water |
| Pittsburgh Water & Sewer Auth | Allegheny | 520,000 | Community | Surface water |
| West View Water Authority | Allegheny | 200,000 | Community | Surface water |
| Wilkinsburg-Penn Jt Water Auth | Allegheny | 125,000 | Community | Surface water |
| Hampton Shaler Water Authority | Allegheny | 61,949 | Community | Purchased surface water |
| Monroeville Municipal Auth | Allegheny | 48,500 | 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, “Plum Boro Muni Auth, PWSID PA5020041, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/plum-boro-muni-auth-pa5020041 (data as of October 1, 2026).