B74/100
BUTLER CO. WATER DISTRICT 2 PWS — Water Quality Report 2026
Serving 116,572 people · Ohio
Water Source
Purchased Surface Water
County
—
System ID
OH0900303
Violations
7
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 12.10 mg/L | 1.30 mg/L | Over Limit |
1,4-dioxane | 0.410 µg/L | — | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: August 14, 2024 – December 31, 2024Rule: Ground Water RuleEnforcement: 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: April 1, 2023 – June 30, 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: October 1, 2021 – December 31, 2021Rule: 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 BUTLER CO. WATER DISTRICT 2 PWS
Is BUTLER CO. WATER DISTRICT 2 PWS water safe to drink?
BUTLER CO. WATER DISTRICT 2 PWS water receives a grade of B (74/100), which is considered good. Out of 77 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has BUTLER CO. WATER DISTRICT 2 PWS detected?
77 contaminants were tested in BUTLER CO. WATER DISTRICT 2 PWS's water. Notable contaminants include Copper (90th percentile), 1,4-dioxane. 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does BUTLER CO. WATER DISTRICT 2 PWS have any EPA violations?
Yes, BUTLER CO. WATER DISTRICT 2 PWS has 7 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, MCL. 2 are health-based violations.
How many people does BUTLER CO. WATER DISTRICT 2 PWS serve?
BUTLER CO. WATER DISTRICT 2 PWS serves approximately 116,572 people, Ohio.
What type of water does BUTLER CO. WATER DISTRICT 2 PWS provide?
BUTLER CO. WATER DISTRICT 2 PWS sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH0900303.
How does BUTLER CO. WATER DISTRICT 2 PWS compare to other utilities in Ohio?
BUTLER CO. WATER DISTRICT 2 PWS scores 74/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Ohio state page for a full comparison of water systems.