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B77/100

MISSISSIPPI COUNTY PWSD 1 — Water Quality Report 2026

Serving 3,000 people · Missouri

Water Source
Purchased Groundwater
County
—
System ID
MO4021178
Violations
12

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.006 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

5

Unresolved

1

Health-Related

TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2025 – December 31, 2025Rule: Stage 2 DBPRVerify on EPA.gov
TIER 3Unresolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2025 – December 31, 2025Rule: Stage 2 DBPRVerify on EPA.gov
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 1, 2024 – December 31, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Reporting violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2024 – October 7, 2024Enforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: August 2, 2022Rule: Ground Water RuleVerify on EPA.gov
TIER 2Resolved

Violation related to Consumer Confidence Report

When: May 19, 2022 – July 15, 2022Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About MISSISSIPPI COUNTY PWSD 1

Is MISSISSIPPI COUNTY PWSD 1 water safe to drink?

MISSISSIPPI COUNTY PWSD 1 water receives a grade of B (77/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has MISSISSIPPI COUNTY PWSD 1 detected?

1 contaminants were tested in MISSISSIPPI COUNTY PWSD 1's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does MISSISSIPPI COUNTY PWSD 1 have any EPA violations?

Yes, MISSISSIPPI COUNTY PWSD 1 has 12 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, RPT. 2 are health-based violations.

How many people does MISSISSIPPI COUNTY PWSD 1 serve?

MISSISSIPPI COUNTY PWSD 1 serves approximately 3,000 people, Missouri.

What type of water does MISSISSIPPI COUNTY PWSD 1 provide?

MISSISSIPPI COUNTY PWSD 1 sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO4021178.

How does MISSISSIPPI COUNTY PWSD 1 compare to other utilities in Missouri?

MISSISSIPPI COUNTY PWSD 1 scores 77/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Missouri state page for a full comparison of water systems.