F0/100
LAHARPE — Water Quality Report 2026
Serving 1,200 people · Illinois
Water Source
Groundwater
County
—
System ID
IL0670450
Violations
37
Contaminant Test Results
EPA Violation History
5
Violations (last 5yr)
3
Unresolved
2
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
TIER 2Unresolved
Consumer confidence report — content deficiency
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2021 – December 31, 2021Enforcement: Resolving — corrective action underway
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2021 – September 30, 2021Enforcement: 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 LAHARPE
Is LAHARPE water safe to drink?
LAHARPE water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 37 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LAHARPE detected?
1 contaminants were tested in LAHARPE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does LAHARPE have any EPA violations?
Yes, LAHARPE has 37 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, MR. 21 are health-based violations.
How many people does LAHARPE serve?
LAHARPE serves approximately 1,200 people, Illinois. The system provides water to 1 community: La Harpe.
What type of water does LAHARPE provide?
LAHARPE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL0670450.
How does LAHARPE compare to other utilities in Illinois?
LAHARPE scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Illinois state page for a full comparison of water systems.