D25/100
LOGAN CO RWS & SWMD #3 — Water Quality Report 2026
Serving 1,618 people · Oklahoma
Water Source
Groundwater
County
—
System ID
OK2004230
Violations
27
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
4
Violations (last 5yr)
0
Unresolved
3
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 1 — URGENTResolved
Exceeded the Maximum Contaminant Level (single sample)
When: July 1, 2021 – September 30, 2021Enforcement: Formal — state order issued
TIER 1 — URGENTResolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2021 – September 30, 2021Enforcement: 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 LOGAN CO RWS & SWMD #3
Is LOGAN CO RWS & SWMD #3 water safe to drink?
LOGAN CO RWS & SWMD #3 water receives a grade of D (25/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 27 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LOGAN CO RWS & SWMD #3 detected?
2 contaminants were tested in LOGAN CO RWS & SWMD #3's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does LOGAN CO RWS & SWMD #3 have any EPA violations?
Yes, LOGAN CO RWS & SWMD #3 has 27 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MCL. 10 are health-based violations.
How many people does LOGAN CO RWS & SWMD #3 serve?
LOGAN CO RWS & SWMD #3 serves approximately 1,618 people, Oklahoma.
What type of water does LOGAN CO RWS & SWMD #3 provide?
LOGAN CO RWS & SWMD #3 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OK2004230.
How does LOGAN CO RWS & SWMD #3 compare to other utilities in Oklahoma?
LOGAN CO RWS & SWMD #3 scores 25/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Oklahoma state page for a full comparison of water systems.