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Community Water System · PWS PA5100145

Stoneworth Apts WTP

Carlisle, Pennsylvania 17015 - drinking water served from groundwater sources to 150 people, tracked in EPA SDWIS and UCMR5.

150
People served
835
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 835 drinking-water violations at Stoneworth Apts WTP, 1% of them health-based - above the Pennsylvania per-system average.

835
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
150
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Stoneworth Apts WTP

Stoneworth Apts WTP is a private-owned community water system that delivers drinking water to 150 residents in Carlisle, Pennsylvania (Butler County) through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 835 total violations for this system , of which 5 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 734 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Public Notice, recorded in 84 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Pennsylvania, EPA tracks 7,701 public water systems serving 12,630,061 people, with 1,159,868 cumulative violations and 68,517 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 150.6 violations. Statewide, 224 of 389 UCMR5-tested systems have reported PFAS detections (57.6%).

Stoneworth Apts WTP's 835 violations sit above the Pennsylvania average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
150
Total Violations
835
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
5
County
Butler
School/Daycare
No
MCL Violations
0
Monitoring Violations
734
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 84 2023
Toluene MR 28 2022
1,2,4-Trichlorobenzene MR 26 2022
cis-1,2-Dichloroethylene MR 26 2022
Xylenes, Total MR 26 2022
DICHLOROMETHANE MR 26 2022
p-Dichlorobenzene MR 26 2022
1,1-Dichloroethylene MR 26 2022
1,1,1-Trichloroethane MR 26 2022
1,2-Dichloropropane MR 26 2022
CHLOROBENZENE MR 26 2022
Benzene MR 26 2022
Ethylbenzene MR 26 2022
Styrene MR 26 2022
Trichloroethylene MR 26 2022
1,1,2-Trichloroethane MR 26 2022
o-Dichlorobenzene MR 26 2022
Carbon tetrachloride MR 26 2022
Tetrachloroethylene MR 26 2022
trans-1,2-Dichloroethylene MR 26 2022
1,2-Dichloroethane MR 26 2022
Groundwater Rule MR 22 2024
Chlorine MR 18 2008
Lead and Copper Rule MR 14 2014
Consumer Confidence Rule Other 12 2020
2,3,7,8-TCDD MR 8 2018
Cadmium MR 7 2021
Chromium MR 7 2021
Fluoride MR 7 2021
Beryllium, Total MR 7 2021

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Stoneworth Apts WTP.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID PA5100145 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Pennsylvania Drinking Water Authority

Pennsylvania DEP, Bureau of Safe Drinking Water is the primacy agency that licenses and inspects Stoneworth Apts WTP under EPA-delegated authority.

Open PA regulator portal

Source: Pennsylvania DEP, Bureau of Safe Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Groundwater Rule MR 22 SDWIS / PA5100145 / 0700
2023 Public Notice Other 84 SDWIS / PA5100145 / 7500
2022 Toluene MR 28 SDWIS / PA5100145 / 2991
2022 1,2,4-Trichlorobenzene MR 26 SDWIS / PA5100145 / 2378
2022 cis-1,2-Dichloroethylene MR 26 SDWIS / PA5100145 / 2380
2022 Xylenes, Total MR 26 SDWIS / PA5100145 / 2955
2022 DICHLOROMETHANE MR 26 SDWIS / PA5100145 / 2964
2022 p-Dichlorobenzene MR 26 SDWIS / PA5100145 / 2969
2022 1,1-Dichloroethylene MR 26 SDWIS / PA5100145 / 2977
2022 1,1,1-Trichloroethane MR 26 SDWIS / PA5100145 / 2981
2022 1,2-Dichloropropane MR 26 SDWIS / PA5100145 / 2983
2022 CHLOROBENZENE MR 26 SDWIS / PA5100145 / 2989
2022 Benzene MR 26 SDWIS / PA5100145 / 2990
2022 Ethylbenzene MR 26 SDWIS / PA5100145 / 2992
2022 Styrene MR 26 SDWIS / PA5100145 / 2996

How Stoneworth Apts WTP Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Stoneworth Apts WTP Pennsylvania avg Federal benchmark
Total violations 835 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 8.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 57.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 150 1,640 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,701 regulated public water systems in Pennsylvania.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Stoneworth Apts WTP water safe to drink? ▼
Stoneworth Apts WTP (PWS ID: PA5100145) has 835 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 150 people using Groundwater sources.
How many people does Stoneworth Apts WTP serve? ▼
Stoneworth Apts WTP serves 150 people in Carlisle, Pennsylvania. It is a Private-owned system using Groundwater water sources with 5 service connections.
What type of violations does Stoneworth Apts WTP have? ▼
Stoneworth Apts WTP has 835 total violations: 5 health-based violations (MCL exceedances or treatment failures), 734 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Stoneworth Apts WTP water? ▼
No PFAS testing data is available for Stoneworth Apts WTP under the EPA's UCMR5 monitoring program.
What water source does Stoneworth Apts WTP use? ▼
Stoneworth Apts WTP uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.