Public water system · PA2590048
ActiveDuncan Twp Municipal Authority
At a glance
Duncan Twp Municipal Authority (PWSID PA2590048) is an active community water system in Tioga County, Pennsylvania. It reports serving 220 people through 106 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 January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
220
Service connections
106
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Duncan Twp Municipal Authority compare with other water systems in Tioga County?
By EPA's size categories, Duncan Twp Municipal Authority is a very small system (500 people or fewer). Tioga County has 78 active public water systems. Its population served is about half of the county average of 420 people per system, and accounts for 0.7% of the 32,718 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 Duncan Twp Municipal Authority 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 Duncan Twp Municipal Authority?
EPA lists Duncan Twp Municipal Authority 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. 14 of the 78 active systems in Tioga County (18%) are also owned by a local government.
Does Duncan Twp Municipal Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between January 2021 and January 2026. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Groundwater Rule (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 |
|---|---|---|---|---|
| 2026-01-05 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-10-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2022-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | 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.
Duncan Twp Municipal Authority: frequently asked questions
Who runs Duncan Twp Municipal Authority?
Duncan Twp Municipal Authority (PWSID PA2590048) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Duncan Twp Municipal Authority serve?
Duncan Twp Municipal Authority reports serving 220 people through 106 service connections in Tioga County, Pennsylvania.
Where does Duncan Twp Municipal Authority 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 Duncan Twp Municipal Authority 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 January 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 Duncan Twp Municipal Authority'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 January 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 Duncan Twp Municipal Authority's water quality report?
As a community water system, Duncan Twp Municipal Authority 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 Tioga County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wellsboro Municipal Authority | Tioga | 8,225 | Community | Surface water |
| Mansfield Borough Mun Auth | Tioga | 4,100 | Community | Surface water |
| Mansfield University | Tioga | 3,000 | Community | Surface water |
| Elkland Boro Water Authority | Tioga | 2,660 | Community | Groundwater |
| Blossburg Municipal Authority | Tioga | 1,650 | Community | Surface water |
| Rb Walter & Williamson Schools | Tioga | 1,400 | Non-transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Duncan Twp Municipal Authority, PWSID PA2590048, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/duncan-twp-municipal-authority-pa2590048 (data as of October 1, 2026).