B74/100
ELK CITY — Water Quality Report 2026
Serving 10,510 people · Oklahoma
Water Source
Groundwater
County
—
System ID
OK2000501
Violations
19
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
3
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: January 1, 2024 – March 31, 2024Rule: Stage 1 DBPREnforcement: 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: July 1, 2023 – September 30, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – July 31, 2023Rule: Total Coliform 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 ELK CITY
Is ELK CITY water safe to drink?
ELK CITY water receives a grade of B (74/100), which is considered good. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ELK CITY detected?
66 contaminants were tested in ELK CITY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ELK CITY have any EPA violations?
Yes, ELK CITY has 19 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MON, Other. 1 are health-based violations.
How many people does ELK CITY serve?
ELK CITY serves approximately 10,510 people, Oklahoma.
What type of water does ELK CITY provide?
ELK CITY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OK2000501.
How does ELK CITY compare to other utilities in Oklahoma?
ELK CITY scores 74/100 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.