C40/100
MADISON WATER DEPARTMENT — Water Quality Report 2026
Serving 15,323 people · Indiana
Water Source
Groundwater
County
—
System ID
IN5239006
Violations
53
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
5
Violations (last 5yr)
3
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, 2025 – August 31, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 2, 2024Enforcement: 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: October 27, 2023 – November 30, 2023Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved
Other Violation
When: June 20, 2023Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 MADISON WATER DEPARTMENT
Is MADISON WATER DEPARTMENT water safe to drink?
MADISON WATER DEPARTMENT water receives a grade of C (40/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 53 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MADISON WATER DEPARTMENT detected?
66 contaminants were tested in MADISON WATER DEPARTMENT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MADISON WATER DEPARTMENT have any EPA violations?
Yes, MADISON WATER DEPARTMENT has 53 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, Other, MR. 1 are health-based violations.
How many people does MADISON WATER DEPARTMENT serve?
MADISON WATER DEPARTMENT serves approximately 15,323 people, Indiana. The system provides water to 1 community: Madison.
What type of water does MADISON WATER DEPARTMENT provide?
MADISON WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IN5239006.
How does MADISON WATER DEPARTMENT compare to other utilities in Indiana?
MADISON WATER DEPARTMENT scores 40/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Indiana state page for a full comparison of water systems.