F9/100
Lone Grove Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 4,863 residents · Oklahoma
What's In Lone Grove's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
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
Water Utility Details
LONE GROVE
Population Served
4,863
Water Source
Groundwater
System ID
OK2001007
Frequently Asked Questions About Lone Grove Water
Is Lone Grove tap water safe to drink?
Lone Grove, Oklahoma tap water receives a grade of F (9/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 75 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Lone Grove's water?
31 contaminants were tested in Lone Grove's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Lone Grove have any water quality violations?
Yes, Lone Grove has 75 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MON. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lone Grove?
Lone Grove water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Lone Grove's tap water come from?
Lone Grove's drinking water is sourced from groundwater and supplied by LONE GROVE. The system serves approximately 4,863 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Lone Grove's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Lone Grove's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Lone Grove's water compare to other cities in Oklahoma?
Lone Grove's water quality score of 9/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Oklahoma state page to see how all cities in the state compare.
What should I do if I'm concerned about Lone Grove's water quality?
If you have concerns about Lone Grove's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (LONE GROVE) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.