Public water system · PA7500019
ActiveDuncannon Muni Water
At a glance
Duncannon Muni Water (PWSID PA7500019) is an active community water system in Perry County, Pennsylvania. It reports serving 2,000 people through 1,137 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 May 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,000
Service connections
1,137
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Duncannon Muni Water compare with other water systems in Perry County?
By EPA's size categories, Duncannon Muni Water is a small system (501 to 3,300 people). Perry County has 93 active public water systems, and Duncannon Muni Water is the 3rd-largest of them by population served. Its population served is about 7.3 times the county average of 274 people per system, and accounts for 7.9% of the 25,439 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 Duncannon Muni Water 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 Duncannon Muni Water?
EPA lists Duncannon Muni Water 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. 13 of the 93 active systems in Perry County (14%) are also owned by a local government.
Does Duncannon Muni Water have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2025. The violations listed here began between January 2023 and May 2025. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Hexachlorobenzene (2 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 |
|---|---|---|---|---|
| 2025-05-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Polychlorinated biphenyls (PCBs), totalcode 2383 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlor epoxidecode 2067 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlorcode 2065 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Heptachlorcode 2065 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlordanecode 2959 | 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.
Duncannon Muni Water: frequently asked questions
Who runs Duncannon Muni Water?
Duncannon Muni Water (PWSID PA7500019) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Duncannon Muni Water serve?
Duncannon Muni Water reports serving 2,000 people through 1,137 service connections in Perry County, Pennsylvania.
Where does Duncannon Muni Water 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 Duncannon Muni Water 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 May 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 Duncannon Muni Water'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 May 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 Duncannon Muni Water's water quality report?
As a community water system, Duncannon Muni Water 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 Perry County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Newport Boro Water Auth | Perry | 3,200 | Community | Surface water |
| Susquenita Sch Dist | Perry | 2,300 | Non-transient non-community | Groundwater |
| Sheetz Store #288 | Perry | 1,500 | Transient non-community | Groundwater |
| Bloomfield Boro Water Auth | Perry | 1,170 | Community | Groundwater under influence of surface water |
| Liberty Travel Plaza Duncannon | Perry | 1,002 | Non-transient non-community | Groundwater |
| Liverpool Muni Auth | Perry | 934 | Community | Groundwater |
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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, “Duncannon Muni Water, PWSID PA7500019, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/duncannon-muni-water-pa7500019 (data as of October 1, 2026).