D28/100
WASHINGTON PWS — Water Quality Report 2026
Serving 14,068 people · Missouri
Water Source
Groundwater
County
—
System ID
MO6010838
Violations
17
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: November 24, 2024 – November 26, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Violation related to Consumer Confidence Report
When: July 9, 2024 – September 27, 2024Rule: Consumer Confidence RuleEnforcement: 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: January 1, 2024 – December 31, 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: January 1, 2024 – December 31, 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 WASHINGTON PWS
Is WASHINGTON PWS water safe to drink?
WASHINGTON PWS water receives a grade of D (28/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 17 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has WASHINGTON PWS detected?
73 contaminants were tested in WASHINGTON PWS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WASHINGTON PWS have any EPA violations?
Yes, WASHINGTON PWS has 17 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, TT, MR. 13 are health-based violations.
How many people does WASHINGTON PWS serve?
WASHINGTON PWS serves approximately 14,068 people, Missouri. The system provides water to 1 community: Washington.
What type of water does WASHINGTON PWS provide?
WASHINGTON PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO6010838.
How does WASHINGTON PWS compare to other utilities in Missouri?
WASHINGTON PWS scores 28/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Missouri state page for a full comparison of water systems.