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Community Water System · PWS MO5010449

Lanagan PWS

Lanagan, Missouri 64847-0000 - drinking water served from groundwater sources to 373 people, tracked in EPA SDWIS and UCMR5.

373
People served
795
EPA violations
489
Health-based
Untested
UCMR5 result

The verdict

EPA records 795 drinking-water violations at Lanagan PWS, 62% of them health-based - above the Missouri per-system average.

795
Total EPA violations on record
62%
Health-based (MCL / treatment failure)
373
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lanagan PWS

Lanagan PWS is a local-owned community water system that delivers drinking water to 373 residents in Lanagan, Missouri (McDonald County) through 137 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 795 total violations for this system , of which 489 (62%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 284 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 Combined Radium (-226 and -228), recorded in 274 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, 162 of 230 UCMR5-tested systems have reported PFAS detections (70.4%).

Lanagan PWS's 795 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
373
Total Violations
795
Health-Based Violations
489
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
137
County
McDonald
School/Daycare
No
MCL Violations
489
Monitoring Violations
284
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 274 2020
Gross Alpha, Excl. Radon and U MCL 200 2018
Coliform (TCR) MR 37 2014
Revised Total Coliform Rule MON 32 2023
Coliform (TCR) MCL 15 2010
Gross Alpha, Excl. Radon and U MR 14 2007
Combined Radium (-226 and -228) MR 9 2007
Radium-226 MR 9 2018
Public Notice Other 8 2019
Consumer Confidence Rule Other 6 2022
1,2,4-Trichlorobenzene MR 5 2020
Xylenes, Total MR 5 2020
o-Dichlorobenzene MR 5 2020
Vinyl chloride MR 5 2020
1,1-Dichloroethylene MR 5 2020
trans-1,2-Dichloroethylene MR 5 2020
1,1,1-Trichloroethane MR 5 2020
1,2-Dichloropropane MR 5 2020
Trichloroethylene MR 5 2020
1,1,2-Trichloroethane MR 5 2020
Tetrachloroethylene MR 5 2020
CHLOROBENZENE MR 5 2020
Benzene MR 5 2020
Barium MR 5 2020
Cadmium MR 5 2020
Chromium MR 5 2020
Fluoride MR 5 2020
Thallium, Total MR 5 2020
Selenium MR 5 2020
p-Dichlorobenzene MR 5 2020

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 Lanagan 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 MO5010449 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 Lanagan 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
2024 LEAD AND COPPER RULE REVISIONS RPT 3 SDWIS / MO5010449 / 5200
2023 Revised Total Coliform Rule MON 32 SDWIS / MO5010449 / 8000
2022 Consumer Confidence Rule Other 6 SDWIS / MO5010449 / 7000
2022 Nitrate-Nitrite MR 5 SDWIS / MO5010449 / 1038
2020 Combined Radium (-226 and -228) MCL 274 SDWIS / MO5010449 / 4010
2020 1,2,4-Trichlorobenzene MR 5 SDWIS / MO5010449 / 2378
2020 Xylenes, Total MR 5 SDWIS / MO5010449 / 2955
2020 o-Dichlorobenzene MR 5 SDWIS / MO5010449 / 2968
2020 Vinyl chloride MR 5 SDWIS / MO5010449 / 2976
2020 1,1-Dichloroethylene MR 5 SDWIS / MO5010449 / 2977
2020 trans-1,2-Dichloroethylene MR 5 SDWIS / MO5010449 / 2979
2020 1,1,1-Trichloroethane MR 5 SDWIS / MO5010449 / 2981
2020 1,2-Dichloropropane MR 5 SDWIS / MO5010449 / 2983
2020 Trichloroethylene MR 5 SDWIS / MO5010449 / 2984
2020 1,1,2-Trichloroethane MR 5 SDWIS / MO5010449 / 2985

How Lanagan PWS Compares

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

Metric Lanagan PWS Missouri avg Federal benchmark
Total violations 795 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 489 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 373 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 Lanagan PWS water safe to drink? ▼
Lanagan PWS (PWS ID: MO5010449) has 795 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 373 people using Groundwater sources.
How many people does Lanagan PWS serve? ▼
Lanagan PWS serves 373 people in Lanagan, Missouri. It is a Local-owned system using Groundwater water sources with 137 service connections.
What type of violations does Lanagan PWS have? ▼
Lanagan PWS has 795 total violations: 489 health-based violations (MCL exceedances or treatment failures), 284 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lanagan PWS water? ▼
No PFAS testing data is available for Lanagan PWS under the EPA's UCMR5 monitoring program.
What water source does Lanagan PWS use? ▼
Lanagan 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. 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.