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Non-Transient Non-Community Water System · PWS OH8345615

Kings Island PWS

Kings Island, Ohio 45034 - drinking water served from groundwater sources to 31,753 people, tracked in EPA SDWIS and UCMR5.

31,753
People served
104
EPA violations
0
Health-based
5 PFAS
UCMR5 result

The verdict

EPA records 104 drinking-water violations at Kings Island PWS - above the Ohio per-system average, and UCMR5 testing detected 5 PFAS compounds.

104
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
31,753
People served by this system
5
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kings Island PWS

Kings Island PWS is a private-owned non-transient non-community water system that delivers drinking water to 31,753 residents in Kings Island, Ohio (Warren County) through 138 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 104 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 104 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 11 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 5 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 28.9 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Ohio, EPA tracks 4,181 public water systems serving 11,085,226 people, with 288,388 cumulative violations and 52,412 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%).

Kings Island PWS's 104 violations sit above the Ohio average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

5 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
31,753
Total Violations
104
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
138
County
Warren
School/Daycare
No
MCL Violations
0
Monitoring Violations
104
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 11 2015
Lead and Copper Rule MR 10 2025
Atrazine MR 4 1999
TTHM MR 4 2015
Total Haloacetic Acids (HAA5) MR 4 2015
LASSO MR 4 1999
Simazine MR 4 1999
1,2,4-Trichlorobenzene MR 3 2025
DICHLOROMETHANE MR 3 2025
o-Dichlorobenzene MR 3 2025
Vinyl chloride MR 3 2025
trans-1,2-Dichloroethylene MR 3 2025
Carbon tetrachloride MR 3 2025
1,2-Dichloropropane MR 3 2025
Trichloroethylene MR 3 2025
1,1,2-Trichloroethane MR 3 2025
CHLOROBENZENE MR 3 2025
Benzene MR 3 2025
Ethylbenzene MR 3 2025
Styrene MR 3 2025
1,2-Dichloroethane MR 3 2025
Xylenes, Total MR 3 2025
cis-1,2-Dichloroethylene MR 3 2025
p-Dichlorobenzene MR 3 2025
1,1,1-Trichloroethane MR 3 2025
Tetrachloroethylene MR 3 2025
Toluene MR 3 2025
1,1-Dichloroethylene MR 3 2025

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 7 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxS 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 5/13/2024 21.20 ppt 4.00 ppt Detected
PFDoA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 5/13/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/13/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 5/13/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 5/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 5/13/2024 5.50 ppt 5.00 ppt Detected
4:2 FTS 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 5/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 5/13/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/13/2024 <4.00 ppt 4.00 ppt Not Detected
PFBS 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 5/13/2024 <5.00 ppt 5.00 ppt Not Detected
PFMBA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/13/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 5/13/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 5/13/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 5/13/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/13/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 5/13/2024 <6.00 ppt 6.00 ppt Not Detected
PFPeA 5/13/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 5/13/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 11/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFOS 11/11/2024 28.90 ppt 4.00 ppt Detected
PFOA 11/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFDA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 11/11/2024 3.10 ppt 3.00 ppt Detected
PFUnA 11/11/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 11/11/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 11/11/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 11/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 11/11/2024 8.20 ppt 5.00 ppt Detected
PFHxS 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 11/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 11/11/2024 6.80 ppt 3.00 ppt Detected
PFMBA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 11/11/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 11/11/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeS 11/11/2024 <4.00 ppt 4.00 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 Kings Island PWS.

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 OH8345615 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Ohio Drinking Water Authority

Ohio EPA, Division of Drinking and Ground Waters is the primacy agency that licenses and inspects Kings Island PWS under EPA-delegated authority.

Open OH regulator portal

Source: Ohio EPA, Division of Drinking and Ground Waters

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 Lead and Copper Rule MR 10 SDWIS / OH8345615 / 5000
2025 1,2,4-Trichlorobenzene MR 3 SDWIS / OH8345615 / 2378
2025 DICHLOROMETHANE MR 3 SDWIS / OH8345615 / 2964
2025 o-Dichlorobenzene MR 3 SDWIS / OH8345615 / 2968
2025 Vinyl chloride MR 3 SDWIS / OH8345615 / 2976
2025 trans-1,2-Dichloroethylene MR 3 SDWIS / OH8345615 / 2979
2025 Carbon tetrachloride MR 3 SDWIS / OH8345615 / 2982
2025 1,2-Dichloropropane MR 3 SDWIS / OH8345615 / 2983
2025 Trichloroethylene MR 3 SDWIS / OH8345615 / 2984
2025 1,1,2-Trichloroethane MR 3 SDWIS / OH8345615 / 2985
2025 CHLOROBENZENE MR 3 SDWIS / OH8345615 / 2989
2025 Benzene MR 3 SDWIS / OH8345615 / 2990
2025 Ethylbenzene MR 3 SDWIS / OH8345615 / 2992
2025 Styrene MR 3 SDWIS / OH8345615 / 2996
2025 1,2-Dichloroethane MR 3 SDWIS / OH8345615 / 2980

How Kings Island PWS Compares

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

Metric Kings Island PWS Ohio avg Federal benchmark
Total violations 104 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 5 compounds 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 31,753 2,651 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,181 regulated public water systems in Ohio.

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 Kings Island PWS water safe to drink?
Kings Island PWS (PWS ID: OH8345615) has 104 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 5 PFAS compounds found. This system serves 31,753 people using Groundwater sources.
How many people does Kings Island PWS serve?
Kings Island PWS serves 31,753 people in Kings Island, Ohio. It is a Private-owned system using Groundwater water sources with 138 service connections.
What type of violations does Kings Island PWS have?
Kings Island PWS has 104 total violations: 0 health-based violations (MCL exceedances or treatment failures), 104 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kings Island PWS water?
Yes. UCMR5 testing detected 5 PFAS compounds in Kings Island PWS's water supply: PFOS, PFBA, PFHxA, PFPeA, PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Kings Island PWS use?
Kings Island PWS 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.
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.