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Community Water System · PWS PA5020008

Cheswick Boro Water Dept

Cheswick, Pennsylvania 15024 - drinking water served from groundwater sources to 1,861 people, tracked in EPA SDWIS and UCMR5.

1,861
People served
119
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 119 drinking-water violations at Cheswick Boro Water Dept, 10% of them health-based - below the Pennsylvania per-system average.

119
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
1,861
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cheswick Boro Water Dept

Cheswick Boro Water Dept is a local-owned community water system that delivers drinking water to 1,861 residents in Cheswick, Pennsylvania (Allegheny County) through 915 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 119 total violations for this system , of which 12 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 94 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 15 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%).

Cheswick Boro Water Dept's 119 violations sit below 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
1,861
Total Violations
119
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
915
County
Allegheny
School/Daycare
No
MCL Violations
0
Monitoring Violations
94
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 15 2005
Lead and Copper Rule TT 12 2007
Consumer Confidence Rule Other 7 2025
Gross Alpha, Excl. Radon and U MR 7 1992
TTHM MR 5 2016
Lead and Copper Rule MR 4 2007
Total Haloacetic Acids (HAA5) MR 4 2016
Endrin MR 4 1988
Methoxychlor MR 4 1988
2,4-D MR 4 1988
2,4,5-TP MR 4 1988
Cadmium MR 4 1988
Nitrate MR 4 1988
BHC-GAMMA MR 4 1988
Mercury MR 4 1988
Selenium MR 4 1988
Toxaphene MR 4 1988
Chromium MR 4 1988
Fluoride MR 4 1988
Arsenic MR 4 1988
Barium MR 4 1988
Chlorine MR 3 2007

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 Cheswick Boro Water Dept.

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 PA5020008 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 Cheswick Boro Water Dept 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
2025 Consumer Confidence Rule Other 7 SDWIS / PA5020008 / 7000
2016 TTHM MR 5 SDWIS / PA5020008 / 2950
2016 Total Haloacetic Acids (HAA5) MR 4 SDWIS / PA5020008 / 2456
2007 Lead and Copper Rule TT 12 SDWIS / PA5020008 / 5000
2007 Lead and Copper Rule MR 4 SDWIS / PA5020008 / 5000
2007 Chlorine MR 3 SDWIS / PA5020008 / 0999
2005 Coliform (TCR) MR 15 SDWIS / PA5020008 / 3100
1992 Gross Alpha, Excl. Radon and U MR 7 SDWIS / PA5020008 / 4000
1988 Endrin MR 4 SDWIS / PA5020008 / 2005
1988 Methoxychlor MR 4 SDWIS / PA5020008 / 2015
1988 2,4-D MR 4 SDWIS / PA5020008 / 2105
1988 2,4,5-TP MR 4 SDWIS / PA5020008 / 2110
1988 Cadmium MR 4 SDWIS / PA5020008 / 1015
1988 Nitrate MR 4 SDWIS / PA5020008 / 1040
1988 BHC-GAMMA MR 4 SDWIS / PA5020008 / 2010

How Cheswick Boro Water Dept Compares

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

Metric Cheswick Boro Water Dept Pennsylvania avg Federal benchmark
Total violations 119 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 1,861 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 Cheswick Boro Water Dept water safe to drink? ▼
Cheswick Boro Water Dept (PWS ID: PA5020008) has 119 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,861 people using Groundwater sources.
How many people does Cheswick Boro Water Dept serve? ▼
Cheswick Boro Water Dept serves 1,861 people in Cheswick, Pennsylvania. It is a Local-owned system using Groundwater water sources with 915 service connections.
What type of violations does Cheswick Boro Water Dept have? ▼
Cheswick Boro Water Dept has 119 total violations: 12 health-based violations (MCL exceedances or treatment failures), 94 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cheswick Boro Water Dept water? ▼
No PFAS testing data is available for Cheswick Boro Water Dept under the EPA's UCMR5 monitoring program.
What water source does Cheswick Boro Water Dept use? ▼
Cheswick Boro Water Dept 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.