Public water system · PA7210002
ActiveCarlisle Water Trmt Plt
At a glance
Carlisle Water Trmt Plt (PWSID PA7210002) is an active community water system in Cumberland County, Pennsylvania. It reports serving 26,000 people through 7,465 service connections. Its primary water source is surface water, 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 August 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
26,000
Service connections
7,465
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Carlisle Water Trmt Plt compare with other water systems in Cumberland County?
By EPA's size categories, Carlisle Water Trmt Plt is a large system (10,001 to 100,000 people). Cumberland County has 94 active public water systems, and Carlisle Water Trmt Plt is the 3rd-largest of them by population served. Its population served is about 9.9 times the county average of 2,619 people per system, and accounts for 11% of the 246,153 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 Carlisle Water Trmt Plt is about 3.9 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 Carlisle Water Trmt Plt?
EPA lists Carlisle Water Trmt Plt 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 94 active systems in Cumberland County (15%) are also owned by a local government.
Does Carlisle Water Trmt Plt have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2024. The violations listed here began between November 2021 and August 2024. By type: 9 monitoring and reporting, 2 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Chlorine (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 |
|---|---|---|---|---|
| 2024-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2024-08-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-04-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-04-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2022-03-01 | Monitoring and reportingFailure Submit Filter Profile/CPE Report · code 29 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2021-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2021-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | 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.
Carlisle Water Trmt Plt: frequently asked questions
Who runs Carlisle Water Trmt Plt?
Carlisle Water Trmt Plt (PWSID PA7210002) is a community water system owned by a local government. It is regulated by the PA state drinking water program.
How many people does Carlisle Water Trmt Plt serve?
Carlisle Water Trmt Plt reports serving 26,000 people through 7,465 service connections in Cumberland County, Pennsylvania.
Where does Carlisle Water Trmt Plt 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 Carlisle Water Trmt Plt 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 August 2024. 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 Carlisle Water Trmt Plt'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 August 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the PA state drinking water program.
Where can I find Carlisle Water Trmt Plt's water quality report?
As a community water system, Carlisle Water Trmt Plt 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 Cumberland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pa American Water Co West | Cumberland | 105,127 | Community | Surface water |
| Veolia Mechanicsburg | Cumberland | 45,013 | Community | Surface water |
| Shippensburg Boro Water Auth | Cumberland | 17,800 | Community | Surface water |
| South Middleton Twp Water Auth | Cumberland | 11,695 | Community | Purchased surface water |
| N Middleton Water Auth | Cumberland | 8,455 | Community | Surface water |
| Middlesex Twp Muni Auth | Cumberland | 3,527 | 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, “Carlisle Water Trmt Plt, PWSID PA7210002, Pennsylvania”, https://aquacensus.com/water-systems/pennsylvania/carlisle-water-trmt-plt-pa7210002 (data as of October 1, 2026).