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Community Water System · PWS IN5214007

Washington Water Works

Washington, Indiana 47501 - drinking water served from groundwater sources to 13,690 people, tracked in EPA SDWIS and UCMR5.

13,690
People served
24
EPA violations
13
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 24 drinking-water violations at Washington Water Works, 54% of them health-based - below the Indiana per-system average.

24
Total EPA violations on record
54%
Health-based (MCL / treatment failure)
13,690
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Washington Water Works

Washington Water Works is a local-owned community water system that delivers drinking water to 13,690 residents in Washington, Indiana (Daviess County) through 5,476 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 24 total violations for this system , of which 13 (54%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 4 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 (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Indiana, EPA tracks 3,967 public water systems serving 5,774,616 people, with 352,710 cumulative violations and 35,932 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 88.9 violations. Statewide, 93 of 229 UCMR5-tested systems have reported PFAS detections (40.6%).

Washington Water Works's 24 violations sit below the Indiana 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
13,690
Total Violations
24
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
5,476
County
Daviess
School/Daycare
No
MCL Violations
11
Monitoring Violations
4
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 11 1998
Consumer Confidence Rule Other 4 2025
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 2 2025
Nitrate MR 2 1995
Coliform (TCR) MR 1 1991
Gross Alpha, Excl. Radon and U MR 1 1980

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
PFTA 9/25/2023 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 9/25/2023 <6.00 ppt 6.00 ppt Not Detected
PFTrDA 9/25/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 9/25/2023 <5.00 ppt 5.00 ppt Not Detected
PFOA 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 3/20/2023 <6.00 ppt 6.00 ppt Not Detected
11Cl-PF3OUdS 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFOS 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 3/20/2023 <2.00 ppt 2.00 ppt Not Detected
PFTrDA 3/20/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 3/20/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 3/20/2023 <2.00 ppt 2.00 ppt Not Detected
NEtFOSAA 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 3/20/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 3/20/2023 <20.00 ppt 20.00 ppt Not Detected
PFHpS 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFEESA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 3/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 3/20/2023 <4.00 ppt 4.00 ppt Not Detected
9Cl-PF3ONS 11/27/2023 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 11/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 11/27/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 11/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 11/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 11/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 11/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFOS 11/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFMPA 11/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 11/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 11/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 11/27/2023 <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 Washington Water Works.

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 IN5214007 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Indiana Drinking Water Authority

Indiana Department of Environmental Management, Drinking Water Branch is the primacy agency that licenses and inspects Washington Water Works under EPA-delegated authority.

Open IN regulator portal

Source: Indiana Department of Environmental Management, Drinking Water Branch

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 Consumer Confidence Rule Other 4 SDWIS / IN5214007 / 7000
2025 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 2 SDWIS / IN5214007 / 0400
1998 Coliform (TCR) MCL 11 SDWIS / IN5214007 / 3100
1995 Nitrate MR 2 SDWIS / IN5214007 / 1040
1991 Coliform (TCR) MR 1 SDWIS / IN5214007 / 3100
1980 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IN5214007 / 4000

How Washington Water Works Compares

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

Metric Washington Water Works Indiana avg Federal benchmark
Total violations 24 88.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 9.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 13,690 1,456 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,967 regulated public water systems in Indiana.

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 Washington Water Works water safe to drink? ▼
Washington Water Works (PWS ID: IN5214007) has 24 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 13,690 people using Groundwater sources.
How many people does Washington Water Works serve? ▼
Washington Water Works serves 13,690 people in Washington, Indiana. It is a Local-owned system using Groundwater water sources with 5,476 service connections.
What type of violations does Washington Water Works have? ▼
Washington Water Works has 24 total violations: 13 health-based violations (MCL exceedances or treatment failures), 4 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Washington Water Works water? ▼
No. Washington Water Works was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Washington Water Works use? ▼
Washington Water Works uses Groundwater 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. 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.