F0/100
BOONE COUNTY PWSD 9 — Water Quality Report 2026
Serving 15,035 people · Missouri
Water Source
Groundwater
County
—
System ID
MO3024058
Violations
34
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
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: August 1, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify 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: September 1, 2024 – January 23, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2021 – September 7, 2021Rule: 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 BOONE COUNTY PWSD 9
Is BOONE COUNTY PWSD 9 water safe to drink?
BOONE COUNTY PWSD 9 water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 34 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BOONE COUNTY PWSD 9 detected?
66 contaminants were tested in BOONE COUNTY PWSD 9's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does BOONE COUNTY PWSD 9 have any EPA violations?
Yes, BOONE COUNTY PWSD 9 has 34 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, MCL. 30 are health-based violations.
How many people does BOONE COUNTY PWSD 9 serve?
BOONE COUNTY PWSD 9 serves approximately 15,035 people, Missouri. The system provides water to 1 community: Columbia.
What type of water does BOONE COUNTY PWSD 9 provide?
BOONE COUNTY PWSD 9 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO3024058.
How does BOONE COUNTY PWSD 9 compare to other utilities in Missouri?
BOONE COUNTY PWSD 9 scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Missouri state page for a full comparison of water systems.