F0/100
FORT GIBSON — Water Quality Report 2026
Serving 4,700 people · Oklahoma
Water Source
Surface Water
County
—
System ID
OK1021622
Violations
74
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.61 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 1, 2024 – December 31, 2024Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
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
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 FORT GIBSON
Is FORT GIBSON water safe to drink?
FORT GIBSON water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 74 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has FORT GIBSON detected?
32 contaminants were tested in FORT GIBSON's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does FORT GIBSON have any EPA violations?
Yes, FORT GIBSON has 74 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, RPT, TT. 44 are health-based violations.
How many people does FORT GIBSON serve?
FORT GIBSON serves approximately 4,700 people, Oklahoma.
What type of water does FORT GIBSON provide?
FORT GIBSON 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 OK1021622.
How does FORT GIBSON compare to other utilities in Oklahoma?
FORT GIBSON 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.