Public water system · PA4560028
ActiveAddison Area Water Auth
At a glance
Addison Area Water Auth (PWSID PA4560028) is an active community water system in Somerset County, Pennsylvania. It reports serving 284 people through 147 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 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
284
Service connections
147
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Addison Area Water Auth compare with other water systems in Somerset County?
By EPA's size categories, Addison Area Water Auth is a very small system (500 people or fewer). Somerset County has 102 active public water systems. Its population served is about 57% below the county average of 665 people per system, and accounts for 0.4% of the 67,819 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 Addison Area Water 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 Addison Area Water Auth?
EPA lists Addison Area Water 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. 30 of the 102 active systems in Somerset County (29%) are also owned by a local government.
Does Addison Area Water 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 January 2025. The violations listed here began between January 2024 and January 2025. By type: 12 monitoring and reporting. The contaminants or rules involved are Nitrite, Nitrate, Haloacetic acids (HAA5) and Total trihalomethanes (TTHM). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2024-02-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | 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.
Addison Area Water Auth: frequently asked questions
Who runs Addison Area Water Auth?
Addison Area Water Auth (PWSID PA4560028) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Addison Area Water Auth serve?
Addison Area Water Auth reports serving 284 people through 147 service connections in Somerset County, Pennsylvania.
Where does Addison Area Water 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 Addison Area Water 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 January 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 Addison Area Water 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 January 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 Addison Area Water Auth's water quality report?
As a community water system, Addison Area Water 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 Somerset County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Windber Area Auth | Somerset | 9,463 | Community | Groundwater |
| Conemaugh Twp Muni Auth | Somerset | 7,800 | Community | Surface water |
| Somerset Boro Muni Water Auth | Somerset | 6,309 | Community | Purchased surface water |
| Somerset Twp Muni Auth Oakridg | Somerset | 3,800 | Community | Purchased surface water |
| Seven Springs Muni Auth | Somerset | 3,000 | Community | Groundwater under influence of surface water |
| Boswell Boro Muni Auth | Somerset | 2,900 | 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, “Addison Area Water Auth, PWSID PA4560028, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/addison-area-water-auth-pa4560028 (data as of October 1, 2026).