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Community Water System · PWS OH7806112

Trumbull Co. - Warren Twp PWS

Vienna, Ohio 44473 - drinking water served from surface water sources to 740 people, tracked in EPA SDWIS and UCMR5.

740
People served
144
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 144 drinking-water violations at Trumbull Co. - Warren Twp PWS, 13% of them health-based - above the Ohio per-system average.

144
Total EPA violations on record
13%
Health-based (MCL / treatment failure)
740
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Trumbull Co. - Warren Twp PWS

Trumbull Co. - Warren Twp PWS is a private-owned community water system that delivers drinking water to 740 residents in Vienna, Ohio (Trumbull County) through 269 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 144 total violations for this system , of which 18 (13%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 125 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 TTHM, recorded in 16 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Trumbull Co. - Warren Twp PWS's 144 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.

Population Served
740
Total Violations
144
Health-Based Violations
18
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
269
County
Trumbull
School/Daycare
No
MCL Violations
18
Monitoring Violations
125
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 16 2014
Lead and Copper Rule MR 4 1995
Endrin MR 4 1995
Methoxychlor MR 4 1995
Toxaphene MR 4 1995
Diquat MR 4 1995
Di(2-ethylhexyl) adipate MR 4 1995
OXAMYL MR 4 1995
Dinoseb MR 4 1995
Aldicarb sulfoxide MR 4 1995
Carbofuran MR 4 1995
Aldicarb MR 4 1995
Atrazine MR 4 1995
LASSO MR 4 1995
Heptachlor MR 4 1995
Heptachlor epoxide MR 4 1995
2,4,5-TP MR 4 1995
HEXACHLOROBENZENE MR 4 1995
Benzo(a)pyrene MR 4 1995
Chlordane MR 4 1995
Dalapon MR 4 1995
Pentachlorophenol MR 4 1995
Simazine MR 4 1995
Picloram MR 4 1995
Total Polychlorinated Biphenyls (PCB) MR 4 1995
BHC-GAMMA MR 4 1995
Aldicarb sulfone MR 4 1995
Endothall MR 4 1995
Hexachlorocyclopentadiene MR 4 1995
2,4-D MR 4 1995

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 Trumbull Co. - Warren Twp 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 OH7806112 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 Trumbull Co. - Warren Twp 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
2019 Consumer Confidence Rule Other 1 SDWIS / OH7806112 / 7000
2014 TTHM MCL 16 SDWIS / OH7806112 / 2950
2006 Total Haloacetic Acids (HAA5) MCL 2 SDWIS / OH7806112 / 2456
1995 Lead and Copper Rule MR 4 SDWIS / OH7806112 / 5000
1995 Endrin MR 4 SDWIS / OH7806112 / 2005
1995 Methoxychlor MR 4 SDWIS / OH7806112 / 2015
1995 Toxaphene MR 4 SDWIS / OH7806112 / 2020
1995 Diquat MR 4 SDWIS / OH7806112 / 2032
1995 Di(2-ethylhexyl) adipate MR 4 SDWIS / OH7806112 / 2035
1995 OXAMYL MR 4 SDWIS / OH7806112 / 2036
1995 Dinoseb MR 4 SDWIS / OH7806112 / 2041
1995 Aldicarb sulfoxide MR 4 SDWIS / OH7806112 / 2043
1995 Carbofuran MR 4 SDWIS / OH7806112 / 2046
1995 Aldicarb MR 4 SDWIS / OH7806112 / 2047
1995 Atrazine MR 4 SDWIS / OH7806112 / 2050

How Trumbull Co. - Warren Twp PWS Compares

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

Metric Trumbull Co. - Warren Twp PWS Ohio avg Federal benchmark
Total violations 144 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 740 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 Trumbull Co. - Warren Twp PWS water safe to drink? ▼
Trumbull Co. - Warren Twp PWS (PWS ID: OH7806112) has 144 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 740 people using Surface Water sources.
How many people does Trumbull Co. - Warren Twp PWS serve? ▼
Trumbull Co. - Warren Twp PWS serves 740 people in Vienna, Ohio. It is a Private-owned system using Surface Water water sources with 269 service connections.
What type of violations does Trumbull Co. - Warren Twp PWS have? ▼
Trumbull Co. - Warren Twp PWS has 144 total violations: 18 health-based violations (MCL exceedances or treatment failures), 125 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Trumbull Co. - Warren Twp PWS water? ▼
No PFAS testing data is available for Trumbull Co. - Warren Twp PWS under the EPA's UCMR5 monitoring program.
What water source does Trumbull Co. - Warren Twp PWS use? ▼
Trumbull Co. - Warren Twp PWS 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.
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.