A95/100
JEFFERSON COUNTY PWSD 10 — Water Quality Report 2026
Serving 10,000 people · Missouri
Water Source
Purchased Surface Water
County
—
System ID
MO6024302
Violations
2
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
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: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
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: April 1, 2024 – June 30, 2024Rule: Stage 2 DBPREnforcement: 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 JEFFERSON COUNTY PWSD 10
Is JEFFERSON COUNTY PWSD 10 water safe to drink?
JEFFERSON COUNTY PWSD 10 water receives a grade of A (95/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has JEFFERSON COUNTY PWSD 10 detected?
31 contaminants were tested in JEFFERSON COUNTY PWSD 10's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does JEFFERSON COUNTY PWSD 10 have any EPA violations?
Yes, JEFFERSON COUNTY PWSD 10 has 2 EPA violation(s) on record, with the most recent in 2024. Violation types include MR.
How many people does JEFFERSON COUNTY PWSD 10 serve?
JEFFERSON COUNTY PWSD 10 serves approximately 10,000 people, Missouri.
What type of water does JEFFERSON COUNTY PWSD 10 provide?
JEFFERSON COUNTY PWSD 10 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 MO6024302.
How does JEFFERSON COUNTY PWSD 10 compare to other utilities in Missouri?
JEFFERSON COUNTY PWSD 10 scores 95/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Missouri state page for a full comparison of water systems.