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Non-Transient Non-Community Water System · PWS PA4190398

Knoebels Grove Park

Elysburg, Pennsylvania 17824 - drinking water served from groundwater sources to 4,000 people, tracked in EPA SDWIS and UCMR5.

4,000
People served
1,039
EPA violations
6
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 1,039 drinking-water violations at Knoebels Grove Park, 1% of them health-based - above the Pennsylvania per-system average.

1,039
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
4,000
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Knoebels Grove Park

Knoebels Grove Park is a private-owned non-transient non-community water system that delivers drinking water to 4,000 residents in Elysburg, Pennsylvania (Columbia County) through 500 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,039 total violations for this system , of which 6 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,028 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 Total Polychlorinated Biphenyls (PCB), recorded in 74 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Knoebels Grove Park's 1,039 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
4,000
Total Violations
1,039
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
500
County
Columbia
School/Daycare
No
MCL Violations
0
Monitoring Violations
1,028
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Polychlorinated Biphenyls (PCB) MR 74 2020
Revised Total Coliform Rule MON 66 2024
Chlorine MR 55 2019
2,3,7,8-TCDD MR 46 2016
Coliform (TCR) MR 41 2016
1,1-Dichloroethylene MR 20 2010
1,2-Dichloroethane MR 20 2010
1,1,1-Trichloroethane MR 20 2010
Carbon tetrachloride MR 20 2010
1,2-Dichloropropane MR 20 2010
Trichloroethylene MR 20 2010
Tetrachloroethylene MR 20 2010
Styrene MR 20 2010
1,2,4-Trichlorobenzene MR 20 2010
cis-1,2-Dichloroethylene MR 20 2010
DICHLOROMETHANE MR 20 2010
trans-1,2-Dichloroethylene MR 20 2010
1,1,2-Trichloroethane MR 20 2010
CHLOROBENZENE MR 20 2010
Toluene MR 20 2010
Xylenes, Total MR 20 2010
o-Dichlorobenzene MR 20 2010
p-Dichlorobenzene MR 20 2010
Ethylbenzene MR 20 2010
Benzene MR 20 2010
Endrin MR 13 2020
Toxaphene MR 13 2020
Diquat MR 13 2020
Glyphosate MR 13 2020
Di(2-ethylhexyl) adipate MR 13 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 6/19/2023 <6.00 ppt 6.00 ppt Not Detected
PFDoA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFUnA 6/19/2023 <2.00 ppt 2.00 ppt Not Detected
PFHpA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 6/19/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 6/19/2023 <8.00 ppt 8.00 ppt Not Detected
PFHxS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 6/19/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 6/19/2023 <2.00 ppt 2.00 ppt Not Detected
PFMBA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 6/19/2023 <6.00 ppt 6.00 ppt Not Detected
PFDA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 6/19/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 6/19/2023 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 6/19/2023 <20.00 ppt 20.00 ppt Not Detected
PFMPA 6/19/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 6/19/2023 <7.00 ppt 7.00 ppt Not Detected
PFBA 6/19/2023 <5.00 ppt 5.00 ppt Not Detected
PFEESA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/19/2023 <3.00 ppt 3.00 ppt Not Detected

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 Knoebels Grove Park.

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 PA4190398 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 Knoebels Grove Park 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 TT 6 SDWIS / PA4190398 / 0700
2024 Revised Total Coliform Rule MON 66 SDWIS / PA4190398 / 8000
2020 Total Polychlorinated Biphenyls (PCB) MR 74 SDWIS / PA4190398 / 2383
2020 Endrin MR 13 SDWIS / PA4190398 / 2005
2020 Toxaphene MR 13 SDWIS / PA4190398 / 2020
2020 Diquat MR 13 SDWIS / PA4190398 / 2032
2020 Glyphosate MR 13 SDWIS / PA4190398 / 2034
2020 Di(2-ethylhexyl) adipate MR 13 SDWIS / PA4190398 / 2035
2020 Simazine MR 13 SDWIS / PA4190398 / 2037
2020 Hexachlorocyclopentadiene MR 13 SDWIS / PA4190398 / 2042
2020 Carbofuran MR 13 SDWIS / PA4190398 / 2046
2020 Atrazine MR 13 SDWIS / PA4190398 / 2050
2020 LASSO MR 13 SDWIS / PA4190398 / 2051
2020 Heptachlor epoxide MR 13 SDWIS / PA4190398 / 2067
2020 HEXACHLOROBENZENE MR 13 SDWIS / PA4190398 / 2274

How Knoebels Grove Park Compares

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

Metric Knoebels Grove Park Pennsylvania avg Federal benchmark
Total violations 1,039 150.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 4,000 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 Knoebels Grove Park water safe to drink? ▼
Knoebels Grove Park (PWS ID: PA4190398) has 1039 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,000 people using Groundwater sources.
How many people does Knoebels Grove Park serve? ▼
Knoebels Grove Park serves 4,000 people in Elysburg, Pennsylvania. It is a Private-owned system using Groundwater water sources with 500 service connections.
What type of violations does Knoebels Grove Park have? ▼
Knoebels Grove Park has 1,039 total violations: 6 health-based violations (MCL exceedances or treatment failures), 1,028 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Knoebels Grove Park water? ▼
No. Knoebels Grove Park was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Knoebels Grove Park use? ▼
Knoebels Grove Park 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.