Public water system · PA5020055
ActiveTarentum Boro Water Dept
At a glance
Tarentum Boro Water Dept (PWSID PA5020055) is an active community water system in Allegheny County, Pennsylvania. It reports serving 4,927 people through 1,850 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, one is health-based, and the most recent began in May 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,927
Service connections
1,850
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Tarentum Boro Water Dept compare with other water systems in Allegheny County?
By EPA's size categories, Tarentum Boro Water Dept is a medium system (3,301 to 10,000 people). Allegheny County has 65 active public water systems. Its population served is well below the county average of 31,017 people per system, and accounts for 0.2% 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 Tarentum Boro Water Dept is about 26% 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. 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 Tarentum Boro Water Dept?
EPA lists Tarentum Boro Water Dept 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 Tarentum Boro Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2026. The violations listed here began between November 2025 and May 2026. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Surface Water Treatment Rule (3 of them). EPA lists 10 as archived, 1 as unaddressed and 1 as resolved. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-05-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-02-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2026-01-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Archived |
| 2026-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-12-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2025-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2025-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2025-11-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Archived |
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.
Tarentum Boro Water Dept: frequently asked questions
Who runs Tarentum Boro Water Dept?
Tarentum Boro Water Dept (PWSID PA5020055) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Tarentum Boro Water Dept serve?
Tarentum Boro Water Dept reports serving 4,927 people through 1,850 service connections in Allegheny County, Pennsylvania.
Where does Tarentum Boro Water Dept 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 Tarentum Boro Water Dept 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 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 Tarentum Boro Water Dept'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 May 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Tarentum Boro Water Dept's water quality report?
As a community water system, Tarentum Boro Water Dept 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, “Tarentum Boro Water Dept, PWSID PA5020055, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/tarentum-boro-water-dept-pa5020055 (data as of October 1, 2026).