Public water system · PA5030004
ActiveE Armstrong Cnty Muni Auth
At a glance
E Armstrong Cnty Muni Auth (PWSID PA5030004) is an active community water system in Armstrong County, Pennsylvania. It reports serving 1,875 people through 372 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 September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,875
Service connections
372
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does E Armstrong Cnty Muni Auth compare with other water systems in Armstrong County?
By EPA's size categories, E Armstrong Cnty Muni Auth is a small system (501 to 3,300 people). Armstrong County has 42 active public water systems. Its population served is about 66% above the county average of 1,129 people per system, and accounts for 4% of the 47,431 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 E Armstrong Cnty Muni Auth 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. Pennsylvania has 1,762 active community water systems, 24% of the state's 7,217 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,632 Pennsylvania systems (92%) list groundwater as their primary source.
Who owns and regulates E Armstrong Cnty Muni Auth?
EPA lists E Armstrong Cnty 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. 20 of the 42 active systems in Armstrong County (48%) are also owned by a local government.
Does E Armstrong Cnty Muni Auth have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in September 2025. The violations listed here began between January 2023 and September 2025. By type: 6 monitoring and reporting, 5 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Public Notice (5 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 |
|---|---|---|---|---|
| 2025-09-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2023-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | 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.
E Armstrong Cnty Muni Auth: frequently asked questions
Who runs E Armstrong Cnty Muni Auth?
E Armstrong Cnty Muni Auth (PWSID PA5030004) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does E Armstrong Cnty Muni Auth serve?
E Armstrong Cnty Muni Auth reports serving 1,875 people through 372 service connections in Armstrong County, Pennsylvania.
Where does E Armstrong Cnty Muni Auth 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 E Armstrong Cnty Muni Auth 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 September 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 E Armstrong Cnty 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, none is health-based, and the most recent began in September 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 E Armstrong Cnty Muni Auth's water quality report?
As a community water system, E Armstrong Cnty 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 Armstrong County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Kittanning Suburb Jt Water Aut | Armstrong | 8,000 | Community | Surface water |
| Manor Twp Jt Muni Auth | Armstrong | 6,744 | Community | Groundwater |
| Buffalo Twp Mun Auth Freeport | Armstrong | 5,849 | Community | Surface water |
| Pa American Water Kittanning | Armstrong | 4,499 | Community | Surface water |
| Ford City Muni Water Works | Armstrong | 2,991 | Community | Groundwater |
| Parks Twp Muni Auth | Armstrong | 2,049 | 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, “E Armstrong Cnty Muni Auth, PWSID PA5030004, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/e-armstrong-cnty-muni-auth-pa5030004 (data as of October 1, 2026).