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Community Water System · PWS MO4031631

Ridge Creek Water Company LLC

Saint Robert, Missouri 65584-0000 - drinking water served from groundwater sources to 450 people, tracked in EPA SDWIS and UCMR5.

450
People served
176
EPA violations
64
Health-based
Untested
UCMR5 result

The verdict

EPA records 176 drinking-water violations at Ridge Creek Water Company LLC, 36% of them health-based - above the Missouri per-system average.

176
Total EPA violations on record
36%
Health-based (MCL / treatment failure)
450
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ridge Creek Water Company LLC

Ridge Creek Water Company LLC is a private-owned community water system that delivers drinking water to 450 residents in Saint Robert, Missouri (Pulaski County) through 131 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 176 total violations for this system , of which 64 (36%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 90 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 64 violations (MON). 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%).

Ridge Creek Water Company LLC's 176 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
450
Total Violations
176
Health-Based Violations
64
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
131
County
Pulaski
School/Daycare
No
MCL Violations
60
Monitoring Violations
90
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 64 2017
Coliform (TCR) MCL 42 2016
Revised Total Coliform Rule MCL 18 2019
E. COLI MR 17 2021
Public Notice Other 8 2018
Lead and Copper Rule MR 5 2024
Nitrate-Nitrite MR 4 2016
Groundwater Rule TT 4 2016
Consumer Confidence Rule Other 2 2024
Groundwater Rule Other 1 2016

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 Ridge Creek Water Company 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 MO4031631 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 Ridge Creek Water Company 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
2024 Lead and Copper Rule MR 5 SDWIS / MO4031631 / 5000
2024 Consumer Confidence Rule Other 2 SDWIS / MO4031631 / 7000
2021 E. COLI MR 17 SDWIS / MO4031631 / 3014
2019 Revised Total Coliform Rule MCL 18 SDWIS / MO4031631 / 8000
2018 Public Notice Other 8 SDWIS / MO4031631 / 7500
2017 Revised Total Coliform Rule MON 64 SDWIS / MO4031631 / 8000
2016 Coliform (TCR) MCL 42 SDWIS / MO4031631 / 3100
2016 Nitrate-Nitrite MR 4 SDWIS / MO4031631 / 1038
2016 Groundwater Rule TT 4 SDWIS / MO4031631 / 0700
2016 Groundwater Rule Other 1 SDWIS / MO4031631 / 0700

How Ridge Creek Water Company LLC Compares

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

Metric Ridge Creek Water Company LLC Missouri avg Federal benchmark
Total violations 176 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 64 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 450 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 Ridge Creek Water Company LLC water safe to drink? ▼
Ridge Creek Water Company LLC (PWS ID: MO4031631) has 176 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 450 people using Groundwater sources.
How many people does Ridge Creek Water Company LLC serve? ▼
Ridge Creek Water Company LLC serves 450 people in Saint Robert, Missouri. It is a Private-owned system using Groundwater water sources with 131 service connections.
What type of violations does Ridge Creek Water Company LLC have? ▼
Ridge Creek Water Company LLC has 176 total violations: 64 health-based violations (MCL exceedances or treatment failures), 90 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ridge Creek Water Company LLC water? ▼
No PFAS testing data is available for Ridge Creek Water Company LLC under the EPA's UCMR5 monitoring program.
What water source does Ridge Creek Water Company LLC use? ▼
Ridge Creek Water Company 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.