F0/100
CHICKASHA MUNICIPAL AUTHORITY — Water Quality Report 2026
Serving 16,036 people · Oklahoma
Water Source
Surface Water
County
—
System ID
OK1010821
Violations
83
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
17
Violations (last 5yr)
6
Unresolved
13
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2024 – March 31, 2024Rule: Total Coliform 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: January 1, 2024 – March 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: October 2, 2023 – February 16, 2024Enforcement: Resolving — corrective action underway
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: September 1, 2023 – September 30, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: September 1, 2023 – September 30, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: August 1, 2023 – August 31, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: August 1, 2023 – August 31, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTResolved
Violation related to Nitrate
When: August 1, 2022 – August 31, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 2Resolved
Failed treatment technique requirements
When: September 1, 2021 – September 30, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: August 1, 2021 – August 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: August 1, 2021 – August 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: July 1, 2021 – July 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: July 1, 2021 – July 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
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 CHICKASHA MUNICIPAL AUTHORITY
Is CHICKASHA MUNICIPAL AUTHORITY water safe to drink?
CHICKASHA MUNICIPAL AUTHORITY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 83 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CHICKASHA MUNICIPAL AUTHORITY detected?
69 contaminants were tested in CHICKASHA MUNICIPAL AUTHORITY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CHICKASHA MUNICIPAL AUTHORITY have any EPA violations?
Yes, CHICKASHA MUNICIPAL AUTHORITY has 83 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MON. 61 are health-based violations.
How many people does CHICKASHA MUNICIPAL AUTHORITY serve?
CHICKASHA MUNICIPAL AUTHORITY serves approximately 16,036 people, Oklahoma.
What type of water does CHICKASHA MUNICIPAL AUTHORITY provide?
CHICKASHA MUNICIPAL AUTHORITY 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 OK1010821.
How does CHICKASHA MUNICIPAL AUTHORITY compare to other utilities in Oklahoma?
CHICKASHA MUNICIPAL AUTHORITY 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.