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Community Water System · PWS MO3031364

Lake Ridge Bay

Warsaw, Missouri 65355-0000 - drinking water served from groundwater sources to 120 people, tracked in EPA SDWIS and UCMR5.

120
People served
44
EPA violations
29
Health-based
Untested
UCMR5 result

The verdict

EPA records 44 drinking-water violations at Lake Ridge Bay, 66% of them health-based - below the Missouri per-system average.

44
Total EPA violations on record
66%
Health-based (MCL / treatment failure)
120
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lake Ridge Bay

Lake Ridge Bay is a private-owned community water system that delivers drinking water to 120 residents in Warsaw, Missouri (Benton County) through 59 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 44 total violations for this system , of which 29 (66%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 11 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 29 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 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, 71 of 230 UCMR5-tested systems have reported PFAS detections (30.9%).

Lake Ridge Bay'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
120
Total Violations
44
Health-Based Violations
29
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
59
County
Benton
School/Daycare
No
MCL Violations
29
Monitoring Violations
11
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 29 2014
Coliform (TCR) MR 8 2009
Revised Total Coliform Rule RPT 3 2025
Combined Radium (-226 and -228) MR 1 2007
Consumer Confidence Rule Other 1 2019
Nitrate-Nitrite MR 1 2009
Gross Alpha, Excl. Radon and U MR 1 2007

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 Lake Ridge Bay.

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 MO3031364 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 Lake Ridge Bay 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
2025 Revised Total Coliform Rule RPT 3 SDWIS / MO3031364 / 8000
2019 Consumer Confidence Rule Other 1 SDWIS / MO3031364 / 7000
2014 Coliform (TCR) MCL 29 SDWIS / MO3031364 / 3100
2009 Coliform (TCR) MR 8 SDWIS / MO3031364 / 3100
2009 Nitrate-Nitrite MR 1 SDWIS / MO3031364 / 1038
2007 Combined Radium (-226 and -228) MR 1 SDWIS / MO3031364 / 4010
2007 Gross Alpha, Excl. Radon and U MR 1 SDWIS / MO3031364 / 4000

How Lake Ridge Bay Compares

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

Metric Lake Ridge Bay Missouri avg Federal benchmark
Total violations 44 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 29 19.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 30.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 120 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 Lake Ridge Bay water safe to drink? ▼
Lake Ridge Bay (PWS ID: MO3031364) has 44 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Groundwater sources.
How many people does Lake Ridge Bay serve? ▼
Lake Ridge Bay serves 120 people in Warsaw, Missouri. It is a Private-owned system using Groundwater water sources with 59 service connections.
What type of violations does Lake Ridge Bay have? ▼
Lake Ridge Bay has 44 total violations: 29 health-based violations (MCL exceedances or treatment failures), 11 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lake Ridge Bay water? ▼
No PFAS testing data is available for Lake Ridge Bay under the EPA's UCMR5 monitoring program.
What water source does Lake Ridge Bay use? ▼
Lake Ridge Bay 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.