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Community Water System · PWS PA1150005

Borough of Avondale

Avondale, Pennsylvania 19311 - drinking water served from groundwater sources to 1,108 people, tracked in EPA SDWIS and UCMR5.

1,108
People served
420
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 420 drinking-water violations at Borough of Avondale - above the Pennsylvania per-system average.

420
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
1,108
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Borough of Avondale

Borough of Avondale is a local-owned community water system that delivers drinking water to 1,108 residents in Avondale, Pennsylvania (Chester County) through 362 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 420 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 389 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 Nitrate, recorded in 27 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%).

Borough of Avondale's 420 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
1,108
Total Violations
420
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
362
County
Chester
School/Daycare
No
MCL Violations
0
Monitoring Violations
389
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 27 2009
Groundwater Rule MR 25 2025
Coliform (TCR) MR 24 2010
Public Notice Other 21 2023
Chlorine MR 16 2012
Hexachlorocyclopentadiene MR 14 2008
Gross Alpha, Excl. Radon and U MR 13 2007
Pentachlorophenol MR 11 2008
Di(2-ethylhexyl) adipate MR 11 2008
Di(2-ethylhexyl) phthalate MR 11 2008
Benzo(a)pyrene MR 11 2008
Total Haloacetic Acids (HAA5) MR 9 2014
Combined Uranium MR 9 2007
Barium MR 7 2011
Cadmium MR 7 2011
Chromium MR 7 2011
Fluoride MR 7 2011
Arsenic MR 7 2011
Selenium MR 7 2011
TTHM MR 7 2014
Mercury MR 7 2011
Consumer Confidence Rule Other 6 2023
Antimony, Total MR 6 2011
Beryllium, Total MR 6 2011
Thallium, Total MR 6 2011
CYANIDE MR 6 2011
Nickel MR 6 2011
cis-1,2-Dichloroethylene MR 5 2005
Xylenes, Total MR 5 2005
DICHLOROMETHANE MR 5 2005

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 Borough of Avondale.

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 PA1150005 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 Borough of Avondale 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 Groundwater Rule MR 25 SDWIS / PA1150005 / 0700
2023 Public Notice Other 21 SDWIS / PA1150005 / 7500
2023 Consumer Confidence Rule Other 6 SDWIS / PA1150005 / 7000
2021 Radium-226 MR 3 SDWIS / PA1150005 / 4020
2021 Radium-228 MR 3 SDWIS / PA1150005 / 4030
2014 Total Haloacetic Acids (HAA5) MR 9 SDWIS / PA1150005 / 2456
2014 TTHM MR 7 SDWIS / PA1150005 / 2950
2012 Chlorine MR 16 SDWIS / PA1150005 / 0999
2011 Barium MR 7 SDWIS / PA1150005 / 1010
2011 Cadmium MR 7 SDWIS / PA1150005 / 1015
2011 Chromium MR 7 SDWIS / PA1150005 / 1020
2011 Fluoride MR 7 SDWIS / PA1150005 / 1025
2011 Arsenic MR 7 SDWIS / PA1150005 / 1005
2011 Selenium MR 7 SDWIS / PA1150005 / 1045
2011 Mercury MR 7 SDWIS / PA1150005 / 1035

How Borough of Avondale Compares

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

Metric Borough of Avondale Pennsylvania avg Federal benchmark
Total violations 420 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 1,108 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 Borough of Avondale water safe to drink? ▼
Borough of Avondale (PWS ID: PA1150005) has 420 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,108 people using Groundwater sources.
How many people does Borough of Avondale serve? ▼
Borough of Avondale serves 1,108 people in Avondale, Pennsylvania. It is a Local-owned system using Groundwater water sources with 362 service connections.
What type of violations does Borough of Avondale have? ▼
Borough of Avondale has 420 total violations: 0 health-based violations (MCL exceedances or treatment failures), 389 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Borough of Avondale water? ▼
No PFAS testing data is available for Borough of Avondale under the EPA's UCMR5 monitoring program.
What water source does Borough of Avondale use? ▼
Borough of Avondale 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.