A85/100
INDIANA AMERICAN WATER - JOHNSON COUNTY — Water Quality Report 2026
Serving 86,813 people · Indiana
Water Source
Groundwater
County
—
System ID
IN5241005
Violations
1
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.61 mg/L | 1.30 mg/L | Over Limit |
chlorate | 880.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1980.
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 INDIANA AMERICAN WATER - JOHNSON COUNTY
Is INDIANA AMERICAN WATER - JOHNSON COUNTY water safe to drink?
INDIANA AMERICAN WATER - JOHNSON COUNTY water receives a grade of A (85/100), which is considered excellent. Out of 67 contaminants tested, 1 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has INDIANA AMERICAN WATER - JOHNSON COUNTY detected?
67 contaminants were tested in INDIANA AMERICAN WATER - JOHNSON COUNTY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does INDIANA AMERICAN WATER - JOHNSON COUNTY have any EPA violations?
Yes, INDIANA AMERICAN WATER - JOHNSON COUNTY has 1 EPA violation(s) on record, with the most recent in 1980. Violation types include MR.
How many people does INDIANA AMERICAN WATER - JOHNSON COUNTY serve?
INDIANA AMERICAN WATER - JOHNSON COUNTY serves approximately 86,813 people, Indiana. The system provides water to 1 community: Greenwood.
What type of water does INDIANA AMERICAN WATER - JOHNSON COUNTY provide?
INDIANA AMERICAN WATER - JOHNSON COUNTY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IN5241005.
How does INDIANA AMERICAN WATER - JOHNSON COUNTY compare to other utilities in Indiana?
INDIANA AMERICAN WATER - JOHNSON COUNTY scores 85/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Indiana state page for a full comparison of water systems.