Public water system · PA5100012
ActivePa American Water Co Butler
At a glance
Pa American Water Co Butler (PWSID PA5100012) is an active community water system in Butler County, Pennsylvania. It reports serving 43,286 people through 19,978 service connections. Its primary water source is surface water, and EPA lists it as privately owned. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
43,286
Service connections
19,978
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Pa American Water Co Butler compare with other water systems in Butler County?
By EPA's size categories, Pa American Water Co Butler is a large system (10,001 to 100,000 people). Butler County has 155 active public water systems, and Pa American Water Co Butler is the largest of them by population served. Its population served is about 43 times the county average of 1,007 people per system, and accounts for 28% of the 156,059 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 Pa American Water Co Butler is about 6.5 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 246 Pennsylvania systems (3.4%) list surface water as their primary source.
Who owns and regulates Pa American Water Co Butler?
EPA lists Pa American Water Co Butler as privately owned. 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. 111 of the 155 active systems in Butler County (72%) are also privately owned.
Does Pa American Water Co Butler have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2023. The violations listed here began between January 2011 and October 2023. By type: 1 reporting and 1 required treatment not met. The contaminants or rules involved are Revised Total Coliform Rule and Interim Enhanced Surface Water Treatment Rule. EPA lists 2 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 |
|---|---|---|---|---|
| 2023-10-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-01-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
All 2 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.
Pa American Water Co Butler: frequently asked questions
Who runs Pa American Water Co Butler?
Pa American Water Co Butler (PWSID PA5100012) is a community water system privately owned. It is regulated by the PA state drinking water program.
How many people does Pa American Water Co Butler serve?
Pa American Water Co Butler reports serving 43,286 people through 19,978 service connections in Butler County, Pennsylvania.
Where does Pa American Water Co Butler get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Pa American Water Co Butler have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2023. 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 Pa American Water Co Butler'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. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in October 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Pa American Water Co Butler's water quality report?
As a community water system, Pa American Water Co Butler 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 Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cranberry Twp WTP | Butler | 42,000 | Community | Purchased surface water |
| Slippery Rock Muni Auth | Butler | 15,778 | Community | Groundwater |
| Municipal Water Auth Adams Twp | Butler | 8,700 | Community | Purchased surface water |
| Harmony Boro Water Auth | Butler | 6,669 | Community | Surface water |
| Zelienople Boro | Butler | 4,123 | Community | Purchased surface water |
| Petroleum Valley Rwa | Butler | 3,800 | Community | Purchased 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, “Pa American Water Co Butler, PWSID PA5100012, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/pa-american-water-co-butler-pa5100012 (data as of October 1, 2026).