D22/100
CITY OF MADISON — Water Quality Report 2026
Serving 16,136 people · Mississippi
Water Source
Groundwater
County
—
System ID
MS0450010
Violations
71
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – August 15, 2023Enforcement: 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 CITY OF MADISON
Is CITY OF MADISON water safe to drink?
CITY OF MADISON water receives a grade of D (22/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 71 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF MADISON detected?
66 contaminants were tested in CITY OF MADISON's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF MADISON have any EPA violations?
Yes, CITY OF MADISON has 71 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MON, MR. 1 are health-based violations.
How many people does CITY OF MADISON serve?
CITY OF MADISON serves approximately 16,136 people, Mississippi. The system provides water to 1 community: Madison.
What type of water does CITY OF MADISON provide?
CITY OF MADISON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MS0450010.
How does CITY OF MADISON compare to other utilities in Mississippi?
CITY OF MADISON scores 22/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Mississippi state page for a full comparison of water systems.