C51/100
LOUISVILLE CITY OF — Water Quality Report 2026
Serving 20,975 people · Colorado
Water Source
Surface Water
County
—
System ID
CO0107487
Violations
41
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
2
Health-Related
TIER 3Resolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Violation related to Nitrate
When: December 1, 2021 – December 31, 2021Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Failed treatment technique requirements
When: December 1, 2021 – December 31, 2021Rule: Surface Water Treatment RuleEnforcement: 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 LOUISVILLE CITY OF
Is LOUISVILLE CITY OF water safe to drink?
LOUISVILLE CITY OF water receives a grade of C (51/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 41 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LOUISVILLE CITY OF detected?
69 contaminants were tested in LOUISVILLE CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does LOUISVILLE CITY OF have any EPA violations?
Yes, LOUISVILLE CITY OF has 41 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MR. 2 are health-based violations.
How many people does LOUISVILLE CITY OF serve?
LOUISVILLE CITY OF serves approximately 20,975 people, Colorado.
What type of water does LOUISVILLE CITY OF provide?
LOUISVILLE CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CO0107487.
How does LOUISVILLE CITY OF compare to other utilities in Colorado?
LOUISVILLE CITY OF scores 51/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Colorado state page for a full comparison of water systems.