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Non-Transient Non-Community Water System · PWS PA6430893

Keystone Charter School

Greenville, Pennsylvania 16125 - drinking water served from groundwater sources to 225 people, tracked in EPA SDWIS and UCMR5.

225
People served
103
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 103 drinking-water violations at Keystone Charter School - below the Pennsylvania per-system average.

103
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
225
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Keystone Charter School

Keystone Charter School is a private-owned non-transient non-community water system that delivers drinking water to 225 residents in Greenville, Pennsylvania (Mercer County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 103 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 96 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is ETHYLENE DIBROMIDE, recorded in 7 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%).

Keystone Charter School's 103 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
225
Total Violations
103
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Mercer
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
96
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
ETHYLENE DIBROMIDE MR 7 2012
Total Haloacetic Acids (HAA5) MR 5 2018
TTHM MR 5 2018
BHC-GAMMA MR 4 2008
Methoxychlor MR 4 2008
Endothall MR 4 2008
Di(2-ethylhexyl) adipate MR 4 2008
Simazine MR 4 2008
Di(2-ethylhexyl) phthalate MR 4 2008
Picloram MR 4 2008
Hexachlorocyclopentadiene MR 4 2008
Atrazine MR 4 2008
2,4-D MR 4 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2008
Chlordane MR 4 2008
Carbofuran MR 4 2008
OXAMYL MR 4 2008
Pentachlorophenol MR 4 2008
Benzo(a)pyrene MR 4 2008
LASSO MR 4 2008
Arsenic MR 4 2022
Lead and Copper Rule MR 3 2008
Chlorine MR 2 2015
Styrene MR 2 2015

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 Keystone Charter School.

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 PA6430893 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 Keystone Charter School 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
2022 Arsenic MR 4 SDWIS / PA6430893 / 1005
2018 Total Haloacetic Acids (HAA5) MR 5 SDWIS / PA6430893 / 2456
2018 TTHM MR 5 SDWIS / PA6430893 / 2950
2015 Chlorine MR 2 SDWIS / PA6430893 / 0999
2015 Styrene MR 2 SDWIS / PA6430893 / 2996
2012 ETHYLENE DIBROMIDE MR 7 SDWIS / PA6430893 / 2946
2008 BHC-GAMMA MR 4 SDWIS / PA6430893 / 2010
2008 Methoxychlor MR 4 SDWIS / PA6430893 / 2015
2008 Endothall MR 4 SDWIS / PA6430893 / 2033
2008 Di(2-ethylhexyl) adipate MR 4 SDWIS / PA6430893 / 2035
2008 Simazine MR 4 SDWIS / PA6430893 / 2037
2008 Di(2-ethylhexyl) phthalate MR 4 SDWIS / PA6430893 / 2039
2008 Picloram MR 4 SDWIS / PA6430893 / 2040
2008 Hexachlorocyclopentadiene MR 4 SDWIS / PA6430893 / 2042
2008 Atrazine MR 4 SDWIS / PA6430893 / 2050

How Keystone Charter School Compares

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

Metric Keystone Charter School Pennsylvania avg Federal benchmark
Total violations 103 150.6 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 225 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 Keystone Charter School water safe to drink? ▼
Keystone Charter School (PWS ID: PA6430893) has 103 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 225 people using Groundwater sources.
How many people does Keystone Charter School serve? ▼
Keystone Charter School serves 225 people in Greenville, Pennsylvania. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Keystone Charter School have? ▼
Keystone Charter School has 103 total violations: 0 health-based violations (MCL exceedances or treatment failures), 96 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Keystone Charter School water? ▼
No PFAS testing data is available for Keystone Charter School under the EPA's UCMR5 monitoring program.
What water source does Keystone Charter School use? ▼
Keystone Charter School uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.