Coalgate Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,005 residents · Oklahoma
What's In Coalgate's Tap Water?
4
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
Contaminant
Detected
Limit (MCL)
Goal (MCLG)
Status
Lead (90th percentile)
0.007 mg/L
0.015 mg/L
0 mg/L
Above Goal
EPA Violation History
18
Violations (last 5yr)
8
Unresolved
10
Health-Related
TIER 2Resolved
Failed treatment technique requirements
When: December 1, 2024 – December 31, 2024Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
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
Failed to conduct Level 2 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 31, 2024 – January 2, 2025Rule: Stage 2 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: November 1, 2023 – November 30, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2023 – September 30, 2023Rule: Surface Water Treatment RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2023 – November 6, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Unresolved
Treatment Technique Violation
When: July 1, 2023 – September 30, 2023Rule: Stage 1 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
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: May 1, 2023 – May 31, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2023 – April 30, 2023Rule: Surface Water Treatment 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: April 1, 2023 – April 30, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 2Unresolved
Treatment Technique Violation
When: April 1, 2023 – June 30, 2023Rule: Stage 1 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: March 1, 2023 – March 31, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: January 1, 2023 – January 31, 2023Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved
Treatment Technique Violation
When: January 1, 2023 – March 31, 2023Rule: Stage 1 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: December 1, 2022 – December 31, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved
Violation related to Nitrate
When: November 1, 2022 – November 30, 2022Rule: Surface Water Treatment RuleEnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved
Treatment Technique Violation
When: October 1, 2022 – December 31, 2022Rule: Stage 1 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
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
Coalgate, Oklahoma tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 110 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Coalgate's water?
Of the 4 contaminants tested in Coalgate's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Coalgate have any water quality violations?
Yes, Coalgate has 110 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, RPT, MR. 50 of these are health-based violations, which are the most serious category.
Do I need a water filter in Coalgate?
Coalgate 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. 1 contaminant(s) exceed these stricter goals.
Where does Coalgate's tap water come from?
Coalgate's drinking water is sourced from surface water and supplied by COALGATE PWA. The system serves approximately 2,005 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Coalgate'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. Coalgate'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 Coalgate's water compare to other cities in Oklahoma?
Coalgate's water quality score of 0/100 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 Coalgate's water quality?
If you have concerns about Coalgate'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 (COALGATE PWA) 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.