TapSafetyReport
B75/100

MERCER COUNTY PWSD 1 — Water Quality Report 2026

Serving 3,200 people · Missouri

Water Source
Purchased Surface Water
County
—
System ID
MO2024382
Violations
13

Contaminant Test Results

EPA Violation History

6

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Disinfection byproduct treatment technique failure

When: March 27, 2025 – March 1, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: March 5, 2025 – March 1, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

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

When: June 1, 2024 – June 30, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

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

When: February 1, 2024 – February 29, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring Violation

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

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

Monitoring Violation

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

When: November 1, 2023 – November 30, 2023Rule: Total Coliform 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 MERCER COUNTY PWSD 1

Is MERCER COUNTY PWSD 1 water safe to drink?

MERCER COUNTY PWSD 1 water receives a grade of B (75/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.

What contaminants has MERCER COUNTY PWSD 1 detected?

31 contaminants were tested in MERCER COUNTY PWSD 1's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does MERCER COUNTY PWSD 1 have any EPA violations?

Yes, MERCER COUNTY PWSD 1 has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MON, MCL. 3 are health-based violations.

How many people does MERCER COUNTY PWSD 1 serve?

MERCER COUNTY PWSD 1 serves approximately 3,200 people, Missouri. The system provides water to 1 community: Mercer.

What type of water does MERCER COUNTY PWSD 1 provide?

MERCER COUNTY PWSD 1 sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MO2024382.

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

MERCER COUNTY PWSD 1 scores 75/100 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.

Cities Served

Mercer