PlainWater
States → Missouri

Community Water System · PWS MO4010160

Charleston PWS

Charleston, Missouri 63834-0000 - drinking water served from groundwater sources to 5,900 people, tracked in EPA SDWIS and UCMR5.

5,900
People served
8
EPA violations
3
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 8 drinking-water violations at Charleston PWS, 38% of them health-based - below the Missouri per-system average.

8
Total EPA violations on record
38%
Health-based (MCL / treatment failure)
5,900
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Charleston PWS

Charleston PWS is a local-owned community water system that delivers drinking water to 5,900 residents in Charleston, Missouri (Mississippi County) through 1,450 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 8 total violations for this system , of which 3 (38%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 3 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Charleston PWS's 8 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
5,900
Total Violations
8
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,450
County
Mississippi
School/Daycare
No
MCL Violations
3
Monitoring Violations
0
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 3 1999
Consumer Confidence Rule Other 2 2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
4:2 FTS 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 5/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 5/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 5/8/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 5/8/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 5/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/8/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 5/8/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 5/8/2023 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 5/8/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 5/8/2023 <6.00 ppt 6.00 ppt Not Detected
PFBA 5/8/2023 <5.00 ppt 5.00 ppt Not Detected
PFHpA 5/8/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 11/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFNA 11/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 11/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 11/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 11/13/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 11/13/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 11/13/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 11/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 11/13/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 11/13/2023 <4.00 ppt 4.00 ppt Not Detected
PFMBA 11/13/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 11/13/2023 <20.00 ppt 20.00 ppt Not Detected

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 Charleston 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 MO4010160 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 Charleston 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
2021 Consumer Confidence Rule Other 2 SDWIS / MO4010160 / 7000
1999 Coliform (TCR) MCL 3 SDWIS / MO4010160 / 3100

How Charleston PWS Compares

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

Metric Charleston PWS Missouri avg Federal benchmark
Total violations 8 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 5,900 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 Charleston PWS water safe to drink? ▼
Charleston PWS (PWS ID: MO4010160) has 8 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,900 people using Groundwater sources.
How many people does Charleston PWS serve? ▼
Charleston PWS serves 5,900 people in Charleston, Missouri. It is a Local-owned system using Groundwater water sources with 1,450 service connections.
What type of violations does Charleston PWS have? ▼
Charleston PWS has 8 total violations: 3 health-based violations (MCL exceedances or treatment failures), 0 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Charleston PWS water? ▼
No. Charleston PWS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Charleston PWS use? ▼
Charleston 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.