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Community Water System · PWS MO1010371

Holden PWS

Holden, Missouri 64040-0000 - drinking water served from surface water sources to 2,683 people, tracked in EPA SDWIS and UCMR5.

2,683
People served
44
EPA violations
26
Health-based
Untested
UCMR5 result

The verdict

EPA records 44 drinking-water violations at Holden PWS, 59% of them health-based - below the Missouri per-system average.

44
Total EPA violations on record
59%
Health-based (MCL / treatment failure)
2,683
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Holden PWS

Holden PWS is a local-owned community water system that delivers drinking water to 2,683 residents in Holden, Missouri (Johnson County) through 1,054 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 44 total violations for this system , of which 26 (59%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 18 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is CARBON, TOTAL, recorded in 8 violations (TT, 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 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%).

Holden PWS's 44 violations sit below 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
2,683
Total Violations
44
Health-Based Violations
26
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,054
County
Johnson
School/Daycare
No
MCL Violations
4
Monitoring Violations
18
Treatment Tech Violations
22

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL TT 8 2006
Interim Enhanced Surface Water Treatment Rule TT 8 2007
Surface Water Treatment Rule TT 6 2002
Revised Total Coliform Rule MON 4 2020
Simazine MR 4 2022
Atrazine MR 4 2022
LASSO MR 4 2022
TTHM MCL 4 2016
Nitrate-Nitrite MR 1 2008
Coliform (TCR) MR 1 1993

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 Holden 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 MO1010371 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 Holden 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
2022 Simazine MR 4 SDWIS / MO1010371 / 2037
2022 Atrazine MR 4 SDWIS / MO1010371 / 2050
2022 LASSO MR 4 SDWIS / MO1010371 / 2051
2020 Revised Total Coliform Rule MON 4 SDWIS / MO1010371 / 8000
2016 TTHM MCL 4 SDWIS / MO1010371 / 2950
2008 Nitrate-Nitrite MR 1 SDWIS / MO1010371 / 1038
2007 Interim Enhanced Surface Water Treatment Rule TT 8 SDWIS / MO1010371 / 0300
2006 CARBON, TOTAL TT 8 SDWIS / MO1010371 / 2920
2002 Surface Water Treatment Rule TT 6 SDWIS / MO1010371 / 0200
1993 Coliform (TCR) MR 1 SDWIS / MO1010371 / 3100

How Holden PWS Compares

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

Metric Holden PWS Missouri avg Federal benchmark
Total violations 44 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 26 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 2,683 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 Holden PWS water safe to drink? ▼
Holden PWS (PWS ID: MO1010371) has 44 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,683 people using Surface Water sources.
How many people does Holden PWS serve? ▼
Holden PWS serves 2,683 people in Holden, Missouri. It is a Local-owned system using Surface Water water sources with 1,054 service connections.
What type of violations does Holden PWS have? ▼
Holden PWS has 44 total violations: 26 health-based violations (MCL exceedances or treatment failures), 18 monitoring/reporting violations, and 22 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Holden PWS water? ▼
No PFAS testing data is available for Holden PWS under the EPA's UCMR5 monitoring program.
What water source does Holden PWS use? ▼
Holden 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.