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F9/100

LONE GROVE — Water Quality Report 2026

Serving 4,863 people · Oklahoma

Water Source
Groundwater
County
—
System ID
OK2001007
Violations
75

Contaminant Test Results

EPA Violation History

5

Violations (last 5yr)

0

Unresolved

1

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 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: September 1, 2023 – September 30, 2023Rule: 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: July 1, 2023 – September 30, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2023 – September 30, 2023Enforcement: 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 LONE GROVE

Is LONE GROVE water safe to drink?

LONE GROVE water receives a grade of F (9/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 75 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has LONE GROVE detected?

31 contaminants were tested in LONE GROVE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does LONE GROVE have any EPA violations?

Yes, LONE GROVE has 75 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MON. 4 are health-based violations.

How many people does LONE GROVE serve?

LONE GROVE serves approximately 4,863 people, Oklahoma.

What type of water does LONE GROVE provide?

LONE GROVE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OK2001007.

How does LONE GROVE compare to other utilities in Oklahoma?

LONE GROVE scores 9/100 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.