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Community Water System · PWS PA5100054

Lake Arthur Estates

Portersville, Pennsylvania 16051 - drinking water served from groundwater sources to 460 people, tracked in EPA SDWIS and UCMR5.

460
People served
172
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 172 drinking-water violations at Lake Arthur Estates, 9% of them health-based - above the Pennsylvania per-system average.

172
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
460
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lake Arthur Estates

Lake Arthur Estates is a private-owned community water system that delivers drinking water to 460 residents in Portersville, Pennsylvania (Butler County) through 325 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 172 total violations for this system , of which 15 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 126 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 Chlorine, recorded in 36 violations (MR). 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%).

Lake Arthur Estates's 172 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
460
Total Violations
172
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
325
County
Butler
School/Daycare
No
MCL Violations
11
Monitoring Violations
126
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 36 2012
Public Notice Other 18 2013
Coliform (TCR) MR 14 2013
Consumer Confidence Rule Other 13 2021
Coliform (TCR) MCL 11 2013
Groundwater Rule MR 9 2024
Nitrate MR 7 2022
Nitrite MR 5 2024
Groundwater Rule TT 4 2012
Radium-228 MR 4 2013
2,3,7,8-TCDD MR 3 2015
Total Haloacetic Acids (HAA5) MR 3 2024
TTHM MR 3 2024
Selenium MR 3 1994
Mercury MR 3 1994
Barium MR 3 1994
Arsenic MR 3 1994
Cadmium MR 3 1994
Fluoride MR 3 1994
Chromium MR 3 1994
Total Polychlorinated Biphenyls (PCB) MR 3 2015
Gross Alpha, Excl. Radon and U MR 2 1984
Nickel MR 2 1994
Antimony, Total MR 2 1994
Beryllium, Total MR 2 1994
CYANIDE MR 2 1994
Thallium, Total MR 2 1994
2,4-D MR 1 1982
2,4,5-TP MR 1 1982
Endrin MR 1 1982

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 Lake Arthur Estates.

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 PA5100054 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 Lake Arthur Estates 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 9 SDWIS / PA5100054 / 0700
2024 Nitrite MR 5 SDWIS / PA5100054 / 1041
2024 Total Haloacetic Acids (HAA5) MR 3 SDWIS / PA5100054 / 2456
2024 TTHM MR 3 SDWIS / PA5100054 / 2950
2022 Nitrate MR 7 SDWIS / PA5100054 / 1040
2021 Consumer Confidence Rule Other 13 SDWIS / PA5100054 / 7000
2015 2,3,7,8-TCDD MR 3 SDWIS / PA5100054 / 2063
2015 Total Polychlorinated Biphenyls (PCB) MR 3 SDWIS / PA5100054 / 2383
2013 Public Notice Other 18 SDWIS / PA5100054 / 7500
2013 Coliform (TCR) MR 14 SDWIS / PA5100054 / 3100
2013 Coliform (TCR) MCL 11 SDWIS / PA5100054 / 3100
2013 Radium-228 MR 4 SDWIS / PA5100054 / 4030
2012 Chlorine MR 36 SDWIS / PA5100054 / 0999
2012 Groundwater Rule TT 4 SDWIS / PA5100054 / 0700
1994 Selenium MR 3 SDWIS / PA5100054 / 1045

How Lake Arthur Estates Compares

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

Metric Lake Arthur Estates Pennsylvania avg Federal benchmark
Total violations 172 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 460 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 Lake Arthur Estates water safe to drink? ▼
Lake Arthur Estates (PWS ID: PA5100054) has 172 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 460 people using Groundwater sources.
How many people does Lake Arthur Estates serve? ▼
Lake Arthur Estates serves 460 people in Portersville, Pennsylvania. It is a Private-owned system using Groundwater water sources with 325 service connections.
What type of violations does Lake Arthur Estates have? ▼
Lake Arthur Estates has 172 total violations: 15 health-based violations (MCL exceedances or treatment failures), 126 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lake Arthur Estates water? ▼
No PFAS testing data is available for Lake Arthur Estates under the EPA's UCMR5 monitoring program.
What water source does Lake Arthur Estates use? ▼
Lake Arthur Estates 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.