B70/100
COLFAX WATER SUPPLY — Water Quality Report 2026
Serving 2,305 people · Iowa
Water Source
Groundwater
County
—
System ID
IA5009056
Violations
11
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.19 mg/L | 1.30 mg/L | Over Limit |
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 2011.
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 COLFAX WATER SUPPLY
Is COLFAX WATER SUPPLY water safe to drink?
COLFAX WATER SUPPLY water receives a grade of B (70/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has COLFAX WATER SUPPLY detected?
2 contaminants were tested in COLFAX WATER SUPPLY's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does COLFAX WATER SUPPLY have any EPA violations?
Yes, COLFAX WATER SUPPLY has 11 EPA violation(s) on record, with the most recent in 2011. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does COLFAX WATER SUPPLY serve?
COLFAX WATER SUPPLY serves approximately 2,305 people, Iowa. The system provides water to 1 community: Colfax.
What type of water does COLFAX WATER SUPPLY provide?
COLFAX WATER SUPPLY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA5009056.
How does COLFAX WATER SUPPLY compare to other utilities in Iowa?
COLFAX WATER SUPPLY scores 70/100 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.