B70/100
ADAIR CO RWD #4 — Water Quality Report 2026
Serving 1,025 people · Oklahoma
Water Source
Purchased Surface Water
County
—
System ID
OK3000107
Violations
22
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.38 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
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: July 1, 2022 – September 30, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2021 – April 15, 2022Rule: 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 ADAIR CO RWD #4
Is ADAIR CO RWD #4 water safe to drink?
ADAIR CO RWD #4 water receives a grade of B (70/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ADAIR CO RWD #4 detected?
2 contaminants were tested in ADAIR CO RWD #4's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does ADAIR CO RWD #4 have any EPA violations?
Yes, ADAIR CO RWD #4 has 22 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, MON, Other.
How many people does ADAIR CO RWD #4 serve?
ADAIR CO RWD #4 serves approximately 1,025 people, Oklahoma.
What type of water does ADAIR CO RWD #4 provide?
ADAIR CO RWD #4 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 OK3000107.
How does ADAIR CO RWD #4 compare to other utilities in Oklahoma?
ADAIR CO RWD #4 scores 70/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Oklahoma state page for a full comparison of water systems.