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AQUA OHIO - TIFFIN

PWS ID: OH7400614 · MARION, Ohio 43302

AQUA OHIO - TIFFIN serves 20,035 people in MARION, Ohio using Surface Water water sources. It has 42 recorded EPA violations, including 30 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: AQUA OHIO - TIFFIN

AQUA OHIO - TIFFIN is a private-owned community water system that delivers drinking water to 20,035 residents in MARION, Ohio (Seneca County) through 8,211 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 42 total violations for this system , of which 30 (71%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 6 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Surface Water Treatment Rule, recorded in 26 violations (TT, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 14.7 ppt. 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. AQUA OHIO - TIFFIN's 42 violations sit below the Ohio average. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%). 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

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

Population Served
20,035
Total Violations
42
Health-Based Violations
30
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
8,211
County
Seneca
School/Daycare
No
MCL Violations
4
Monitoring Violations
6
Treatment Tech Violations
26

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule TT 26 1993
Nitrate MCL 4 2002
TTHM MR 2 2008
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 2010
Total Haloacetic Acids (HAA5) MR 2 2008
Consumer Confidence Rule Other 1 2019

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 120 samples detected PFAS.

Contaminant Date Result MRL Status
8:2 FTS 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTA 7/16/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFTrDA 7/16/2024 <0.007 µg/L 0.007 µg/L Not Detected
NEtFOSAA 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMBA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
lithium 7/16/2024 10.6000 µg/L 9 µg/L Detected
PFBS 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 7/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 7/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 7/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFDA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFUnA 7/16/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 7/16/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 7/16/2024 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 7/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFEESA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 7/16/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 7/16/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHxA 7/16/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 7/16/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFHxA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 4/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 4/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 4/23/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 4/23/2024 <0.006 µg/L 0.006 µg/L Not Detected
PFDoA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
NEtFOSAA 4/23/2024 <0.005 µg/L 0.005 µg/L Not Detected
lithium 4/23/2024 <9 µg/L 9 µg/L Not Detected
PFUnA 4/23/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFHpS 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 4/23/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/23/2024 <0.002 µg/L 0.002 µg/L Not Detected
ADONA 4/23/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 4/23/2024 <0.005 µg/L 0.005 µg/L 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 AQUA OHIO - TIFFIN.

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 OH7400614 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 AQUA OHIO - TIFFIN 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
2019 Consumer Confidence Rule Other 1 SDWIS / OH7400614 / 7000
2010 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 SDWIS / OH7400614 / 0600
2008 TTHM MR 2 SDWIS / OH7400614 / 2950
2008 Total Haloacetic Acids (HAA5) MR 2 SDWIS / OH7400614 / 2456
2002 Nitrate MCL 4 SDWIS / OH7400614 / 1040
1993 Surface Water Treatment Rule TT 26 SDWIS / OH7400614 / 0200

How AQUA OHIO - TIFFIN Compares

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

Metric AQUA OHIO - TIFFIN Ohio avg Federal benchmark
Total violations 42 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 30 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 20,035 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is AQUA OHIO - TIFFIN water safe to drink? ▼
AQUA OHIO - TIFFIN (PWS ID: OH7400614) has 42 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 20,035 people using Surface Water sources.
How many people does AQUA OHIO - TIFFIN serve? ▼
AQUA OHIO - TIFFIN serves 20,035 people in MARION, Ohio. It is a Private-owned system using Surface Water water sources with 8,211 service connections.
What type of violations does AQUA OHIO - TIFFIN have? ▼
AQUA OHIO - TIFFIN has 42 total violations: 30 health-based violations (MCL exceedances or treatment failures), 6 monitoring/reporting violations, and 26 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in AQUA OHIO - TIFFIN water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in AQUA OHIO - TIFFIN's water supply: lithium. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does AQUA OHIO - TIFFIN use? ▼
AQUA OHIO - TIFFIN uses Surface Water 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.

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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.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial