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Community Water System · PWS MO1010161

Chilhowee PWS

Chilhowee, Missouri 64733-0183 - drinking water served from groundwater sources to 382 people, tracked in EPA SDWIS and UCMR5.

382
People served
32
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 32 drinking-water violations at Chilhowee PWS - below the Missouri per-system average.

32
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
382
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chilhowee PWS

Chilhowee PWS is a local-owned community water system that delivers drinking water to 382 residents in Chilhowee, Missouri (Johnson County) through 123 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 32 total violations for this system , of which 0 (0%) 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 2012.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 4 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%).

Chilhowee PWS's 32 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
382
Total Violations
32
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
123
County
Johnson
School/Daycare
No
MCL Violations
0
Monitoring Violations
18
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 4 2012
Nitrate-Nitrite MR 2 2008
Consumer Confidence Rule Other 2 2011
Arsenic MR 1 1994
Barium MR 1 1994
Beryllium, Total MR 1 1994
Mercury MR 1 1994
Nickel MR 1 1994
Selenium MR 1 1994
Thallium, Total MR 1 1994
Chromium MR 1 1994
Fluoride MR 1 1994
Cadmium MR 1 1994
Antimony, Total MR 1 1994
CYANIDE MR 1 1994

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 Chilhowee 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 MO1010161 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 Chilhowee 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
2012 Coliform (TCR) MR 4 SDWIS / MO1010161 / 3100
2011 Consumer Confidence Rule Other 2 SDWIS / MO1010161 / 7000
2008 Nitrate-Nitrite MR 2 SDWIS / MO1010161 / 1038
1994 Arsenic MR 1 SDWIS / MO1010161 / 1005
1994 Barium MR 1 SDWIS / MO1010161 / 1010
1994 Beryllium, Total MR 1 SDWIS / MO1010161 / 1075
1994 Mercury MR 1 SDWIS / MO1010161 / 1035
1994 Nickel MR 1 SDWIS / MO1010161 / 1036
1994 Selenium MR 1 SDWIS / MO1010161 / 1045
1994 Thallium, Total MR 1 SDWIS / MO1010161 / 1085
1994 Chromium MR 1 SDWIS / MO1010161 / 1020
1994 Fluoride MR 1 SDWIS / MO1010161 / 1025
1994 Cadmium MR 1 SDWIS / MO1010161 / 1015
1994 Antimony, Total MR 1 SDWIS / MO1010161 / 1074
1994 CYANIDE MR 1 SDWIS / MO1010161 / 1024

How Chilhowee PWS Compares

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

Metric Chilhowee PWS Missouri avg Federal benchmark
Total violations 32 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 382 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 Chilhowee PWS water safe to drink? ▼
Chilhowee PWS (PWS ID: MO1010161) has 32 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 382 people using Groundwater sources.
How many people does Chilhowee PWS serve? ▼
Chilhowee PWS serves 382 people in Chilhowee, Missouri. It is a Local-owned system using Groundwater water sources with 123 service connections.
What type of violations does Chilhowee PWS have? ▼
Chilhowee PWS has 32 total violations: 0 health-based violations (MCL exceedances or treatment failures), 18 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chilhowee PWS water? ▼
No PFAS testing data is available for Chilhowee PWS under the EPA's UCMR5 monitoring program.
What water source does Chilhowee PWS use? ▼
Chilhowee 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.