F0/100
OBERLIN, CITY OF — Water Quality Report 2026
Serving 1,639 people · Kansas
Water Source
Groundwater
County
—
System ID
KS2003903
Violations
79
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.95 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – December 31, 2023Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – December 31, 2023Rule: Stage 2 DBPREnforcement: 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 OBERLIN, CITY OF
Is OBERLIN, CITY OF water safe to drink?
OBERLIN, CITY OF water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 79 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has OBERLIN, CITY OF detected?
2 contaminants were tested in OBERLIN, CITY OF's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does OBERLIN, CITY OF have any EPA violations?
Yes, OBERLIN, CITY OF has 79 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, MCL. 64 are health-based violations.
How many people does OBERLIN, CITY OF serve?
OBERLIN, CITY OF serves approximately 1,639 people, Kansas. The system provides water to 1 community: Oberlin.
What type of water does OBERLIN, CITY OF provide?
OBERLIN, CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is KS2003903.
How does OBERLIN, CITY OF compare to other utilities in Kansas?
OBERLIN, CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Kansas state page for a full comparison of water systems.