PlainWater
States → Missouri

Community Water System · PWS MO3262156

Hidden Valley MHP LLC

Warsaw, Missouri 65355-0000 - drinking water served from groundwater sources to 60 people, tracked in EPA SDWIS and UCMR5.

60
People served
1,400
EPA violations
43
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,400 drinking-water violations at Hidden Valley MHP LLC, 3% of them health-based - above the Missouri per-system average.

1,400
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
60
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hidden Valley MHP LLC

Hidden Valley MHP LLC is a private-owned community water system that delivers drinking water to 60 residents in Warsaw, Missouri (Benton County) through 34 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,400 total violations for this system , of which 43 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,085 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 943 violations (MR). 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%).

Hidden Valley MHP LLC's 1,400 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
60
Total Violations
1,400
Health-Based Violations
43
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
34
County
Benton
School/Daycare
No
MCL Violations
38
Monitoring Violations
1,085
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 943 2016
Public Notice Other 200 2017
Revised Total Coliform Rule MON 82 2017
Consumer Confidence Rule Other 57 2017
Nitrate-Nitrite MR 40 2017
Coliform (TCR) MCL 38 1993
Lead and Copper Rule MR 12 2008
Groundwater Rule Other 6 2018
Groundwater Rule TT 5 2015
Radium-228 MR 4 2014
Radium-226 MR 4 2014

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 Hidden Valley MHP LLC.

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 MO3262156 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 Hidden Valley MHP LLC 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
2018 Groundwater Rule Other 6 SDWIS / MO3262156 / 0700
2017 Public Notice Other 200 SDWIS / MO3262156 / 7500
2017 Revised Total Coliform Rule MON 82 SDWIS / MO3262156 / 8000
2017 Consumer Confidence Rule Other 57 SDWIS / MO3262156 / 7000
2017 Nitrate-Nitrite MR 40 SDWIS / MO3262156 / 1038
2016 Coliform (TCR) MR 943 SDWIS / MO3262156 / 3100
2015 Groundwater Rule TT 5 SDWIS / MO3262156 / 0700
2014 Radium-228 MR 4 SDWIS / MO3262156 / 4030
2014 Radium-226 MR 4 SDWIS / MO3262156 / 4020
2008 Lead and Copper Rule MR 12 SDWIS / MO3262156 / 5000
1993 Coliform (TCR) MCL 38 SDWIS / MO3262156 / 3100

How Hidden Valley MHP LLC Compares

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

Metric Hidden Valley MHP LLC Missouri avg Federal benchmark
Total violations 1,400 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 43 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 60 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 Hidden Valley MHP LLC water safe to drink? ▼
Hidden Valley MHP LLC (PWS ID: MO3262156) has 1400 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 60 people using Groundwater sources.
How many people does Hidden Valley MHP LLC serve? ▼
Hidden Valley MHP LLC serves 60 people in Warsaw, Missouri. It is a Private-owned system using Groundwater water sources with 34 service connections.
What type of violations does Hidden Valley MHP LLC have? ▼
Hidden Valley MHP LLC has 1,400 total violations: 43 health-based violations (MCL exceedances or treatment failures), 1,085 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hidden Valley MHP LLC water? ▼
No PFAS testing data is available for Hidden Valley MHP LLC under the EPA's UCMR5 monitoring program.
What water source does Hidden Valley MHP LLC use? ▼
Hidden Valley MHP LLC 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. 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.