F0/100
COLLINSVILLE — Water Quality Report 2026
Serving 5,400 people · Oklahoma
Water Source
Surface Water
County
—
System ID
OK1021505
Violations
44
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.10 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
1
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, 2024 – July 15, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – July 15, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – July 31, 2023Rule: 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 COLLINSVILLE
Is COLLINSVILLE water safe to drink?
COLLINSVILLE water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 44 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has COLLINSVILLE detected?
35 contaminants were tested in COLLINSVILLE's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does COLLINSVILLE have any EPA violations?
Yes, COLLINSVILLE has 44 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MR. 22 are health-based violations.
How many people does COLLINSVILLE serve?
COLLINSVILLE serves approximately 5,400 people, Oklahoma.
What type of water does COLLINSVILLE provide?
COLLINSVILLE 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 OK1021505.
How does COLLINSVILLE compare to other utilities in Oklahoma?
COLLINSVILLE scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Oklahoma state page for a full comparison of water systems.