Public water system · PA7360001
ActiveAdamstown Borough
At a glance
Adamstown Borough (PWSID PA7360001) is an active community water system in Lancaster County, Pennsylvania. It reports serving 1,800 people through 804 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, one is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,800
Service connections
804
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Adamstown Borough compare with other water systems in Lancaster County?
By EPA's size categories, Adamstown Borough is a small system (501 to 3,300 people). Lancaster County has 402 active public water systems. Its population served is about 79% above the county average of 1,008 people per system, and accounts for 0.4% of the 405,283 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 Adamstown Borough 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 Adamstown Borough?
EPA lists Adamstown Borough 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. 34 of the 402 active systems in Lancaster County (8.5%) are also owned by a local government.
Does Adamstown Borough have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2023. The violations listed here began between January 1994 and July 2023. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Groundwater Rule (5 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 |
|---|---|---|---|---|
| 2023-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2021-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2011-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 1995-01-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | 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.
Adamstown Borough: frequently asked questions
Who runs Adamstown Borough?
Adamstown Borough (PWSID PA7360001) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Adamstown Borough serve?
Adamstown Borough reports serving 1,800 people through 804 service connections in Lancaster County, Pennsylvania.
Where does Adamstown Borough 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 Adamstown Borough have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 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 Adamstown Borough'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, one is health-based, and the most recent began in July 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 Adamstown Borough's water quality report?
As a community water system, Adamstown Borough 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 Lancaster County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Lancaster | Lancaster | 120,000 | Community | Surface water |
| Columbia Water Co | Lancaster | 25,200 | Community | Surface water |
| Ephrata Area Joint Authority | Lancaster | 24,500 | Community | Surface water |
| East Hempfield Water Auth | Lancaster | 20,988 | Community | Purchased surface water |
| Elizabethtown Area Water | Lancaster | 19,000 | Community | Surface water |
| Mt Joy Boro Auth | Lancaster | 15,261 | Community | Groundwater under influence of 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, “Adamstown Borough, PWSID PA7360001, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/adamstown-borough-pa7360001 (data as of October 1, 2026).