B66/100
JANESVILLE WATER SUPPLY — Water Quality Report 2026
Serving 1,034 people · Iowa
Water Source
Purchased Groundwater
County
—
System ID
IA0932001
Violations
11
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2010.
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 JANESVILLE WATER SUPPLY
Is JANESVILLE WATER SUPPLY water safe to drink?
JANESVILLE WATER SUPPLY water receives a grade of B (66/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has JANESVILLE WATER SUPPLY detected?
1 contaminants were tested in JANESVILLE WATER SUPPLY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does JANESVILLE WATER SUPPLY have any EPA violations?
Yes, JANESVILLE WATER SUPPLY has 11 EPA violation(s) on record, with the most recent in 2010. Violation types include MR, MCL. 5 are health-based violations.
How many people does JANESVILLE WATER SUPPLY serve?
JANESVILLE WATER SUPPLY serves approximately 1,034 people, Iowa. The system provides water to 1 community: Janesville.
What type of water does JANESVILLE WATER SUPPLY provide?
JANESVILLE WATER SUPPLY sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA0932001.
How does JANESVILLE WATER SUPPLY compare to other utilities in Iowa?
JANESVILLE WATER SUPPLY scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Iowa state page for a full comparison of water systems.