F0/100
EL RENO — Water Quality Report 2026
Serving 16,212 people · Oklahoma
Water Source
Purchased Surface Water
County
—
System ID
OK2000902
Violations
88
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
9
Violations (last 5yr)
0
Unresolved
7
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 – September 30, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – September 30, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: December 1, 2022 – December 31, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Violation related to Nitrate
When: October 1, 2022 – October 31, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 2Resolved
Failed treatment technique requirements
When: October 1, 2022 – October 31, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: February 1, 2022 – February 28, 2022Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Violation related to Nitrate
When: May 1, 2021 – May 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
TIER 2Resolved
Failed treatment technique requirements
When: May 1, 2021 – May 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 EL RENO
Is EL RENO water safe to drink?
EL RENO water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 88 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has EL RENO detected?
76 contaminants were tested in EL RENO's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does EL RENO have any EPA violations?
Yes, EL RENO has 88 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MCL. 40 are health-based violations.
How many people does EL RENO serve?
EL RENO serves approximately 16,212 people, Oklahoma.
What type of water does EL RENO provide?
EL RENO 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 OK2000902.
How does EL RENO compare to other utilities in Oklahoma?
EL RENO 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.