Public water system · PA5030002
ActiveDayton Muni Water Dept
At a glance
Dayton Muni Water Dept (PWSID PA5030002) is an active community water system in Armstrong County, Pennsylvania. It reports serving 600 people through 286 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 October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
286
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dayton Muni Water Dept compare with other water systems in Armstrong County?
By EPA's size categories, Dayton Muni Water Dept is a small system (501 to 3,300 people). Armstrong County has 42 active public water systems. Its population served is about half of the county average of 1,129 people per system, and accounts for 1.3% 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 Dayton Muni Water Dept 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 Dayton Muni Water Dept?
EPA lists Dayton Muni 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. 20 of the 42 active systems in Armstrong County (48%) are also owned by a local government.
Does Dayton Muni Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between January 2021 and October 2025. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Groundwater Rule (4 of them). EPA lists 11 as resolved and 1 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2025-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2023-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2021-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | 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.
Dayton Muni Water Dept: frequently asked questions
Who runs Dayton Muni Water Dept?
Dayton Muni Water Dept (PWSID PA5030002) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Dayton Muni Water Dept serve?
Dayton Muni Water Dept reports serving 600 people through 286 service connections in Armstrong County, Pennsylvania.
Where does Dayton Muni Water Dept 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 Dayton Muni Water Dept 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 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 Dayton Muni 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, none 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 Dayton Muni Water Dept's water quality report?
As a community water system, Dayton Muni 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 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, “Dayton Muni Water Dept, PWSID PA5030002, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/dayton-muni-water-dept-pa5030002 (data as of October 1, 2026).