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Community Water System · PWS MO5010860

Willard PWS

Willard, Missouri 65781-0000 - drinking water served from groundwater sources to 8,400 people, tracked in EPA SDWIS and UCMR5.

8,400
People served
72
EPA violations
24
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 72 drinking-water violations at Willard PWS, 33% of them health-based - above the Missouri per-system average.

72
Total EPA violations on record
33%
Health-based (MCL / treatment failure)
8,400
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Willard PWS

Willard PWS is a local-owned community water system that delivers drinking water to 8,400 residents in Willard, Missouri (Greene County) through 3,567 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 72 total violations for this system , of which 24 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 43 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 24 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 Missouri, EPA tracks 2,823 public water systems serving 5,855,885 people, with 201,695 cumulative violations and 54,821 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 71.4 violations. Statewide, 162 of 230 UCMR5-tested systems have reported PFAS detections (70.4%).

Willard PWS's 72 violations sit above the Missouri 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
8,400
Total Violations
72
Health-Based Violations
24
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
3,567
County
Greene
School/Daycare
No
MCL Violations
24
Monitoring Violations
43
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 24 2009
Coliform (TCR) MR 9 2000
Carbon tetrachloride MR 1 1994
p-Dichlorobenzene MR 1 1994
1,1,1-Trichloroethane MR 1 1994
Vinyl chloride MR 1 1994
1,2-Dichloropropane MR 1 1994
Ethylbenzene MR 1 1994
CHLOROBENZENE MR 1 1994
o-Dichlorobenzene MR 1 1994
Styrene MR 1 1994
Toluene MR 1 1994
1,1,2-Trichloroethane MR 1 1994
trans-1,2-Dichloroethylene MR 1 1994
Antimony, Total MR 1 1994
Beryllium, Total MR 1 1994
Cadmium MR 1 1994
Mercury MR 1 1994
Nickel MR 1 1994
Nitrate-Nitrite MR 1 1994
Selenium MR 1 1994
Thallium, Total MR 1 1994
1,2-Dichloroethane MR 1 1994
Trichloroethylene MR 1 1994
CYANIDE MR 1 1994
cis-1,2-Dichloroethylene MR 1 1994
Consumer Confidence Rule Other 1 2020
Tetrachloroethylene MR 1 1994
Barium MR 1 1994
Chromium MR 1 1994

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
PFMPA 9/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/20/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/20/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/20/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 9/20/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/20/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/20/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/20/2023 <2.00 ppt 2.00 ppt Not Detected
PFNA 9/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/20/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 9/20/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 9/20/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/20/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 6/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 6/28/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 6/28/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 6/28/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 6/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 6/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFEESA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 6/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFUnA 6/28/2023 <2.00 ppt 2.00 ppt Not Detected
8:2 FTS 6/28/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 6/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 6/28/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/28/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/28/2023 <20.00 ppt 20.00 ppt Not Detected
PFMPA 6/28/2023 <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 Willard 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 MO5010860 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Missouri Drinking Water Authority

Missouri DNR, Public Drinking Water Branch is the primacy agency that licenses and inspects Willard PWS under EPA-delegated authority.

Open MO regulator portal

Source: Missouri DNR, Public 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
2020 Consumer Confidence Rule Other 1 SDWIS / MO5010860 / 7000
2009 Coliform (TCR) MCL 24 SDWIS / MO5010860 / 3100
2000 Coliform (TCR) MR 9 SDWIS / MO5010860 / 3100
1994 Carbon tetrachloride MR 1 SDWIS / MO5010860 / 2982
1994 p-Dichlorobenzene MR 1 SDWIS / MO5010860 / 2969
1994 1,1,1-Trichloroethane MR 1 SDWIS / MO5010860 / 2981
1994 Vinyl chloride MR 1 SDWIS / MO5010860 / 2976
1994 1,2-Dichloropropane MR 1 SDWIS / MO5010860 / 2983
1994 Ethylbenzene MR 1 SDWIS / MO5010860 / 2992
1994 CHLOROBENZENE MR 1 SDWIS / MO5010860 / 2989
1994 o-Dichlorobenzene MR 1 SDWIS / MO5010860 / 2968
1994 Styrene MR 1 SDWIS / MO5010860 / 2996
1994 Toluene MR 1 SDWIS / MO5010860 / 2991
1994 1,1,2-Trichloroethane MR 1 SDWIS / MO5010860 / 2985
1994 trans-1,2-Dichloroethylene MR 1 SDWIS / MO5010860 / 2979

How Willard PWS Compares

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

Metric Willard PWS Missouri avg Federal benchmark
Total violations 72 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 24 19.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 70.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 8,400 2,074 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,823 regulated public water systems in Missouri.

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 Willard PWS water safe to drink? ▼
Willard PWS (PWS ID: MO5010860) has 72 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 8,400 people using Groundwater sources.
How many people does Willard PWS serve? ▼
Willard PWS serves 8,400 people in Willard, Missouri. It is a Local-owned system using Groundwater water sources with 3,567 service connections.
What type of violations does Willard PWS have? ▼
Willard PWS has 72 total violations: 24 health-based violations (MCL exceedances or treatment failures), 43 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Willard PWS water? ▼
No. Willard PWS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Willard PWS use? ▼
Willard PWS 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.