TapSafetyReport
F0/100

Yale Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 1,227 residents · Oklahoma

What's In Yale's Tap Water?

1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.007 mg/L0.015 mg/LAbove Goal

EPA Violation History

15

Violations (last 5yr)

3

Unresolved

7

Health-Related

TIER 3Unresolved

Monitoring Violation

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

When: July 1, 2025 – July 31, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

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, 2025 – July 31, 2025Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 19, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Treatment technique violation

When: October 17, 2024 – September 19, 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: December 30, 2022 – June 26, 2025Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: October 2, 2022 – September 20, 2023Enforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2022 – March 31, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
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: December 30, 2021 – April 18, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2021 – December 31, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issued
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: September 29, 2021 – April 18, 2022Rule: Stage 2 DBPREnforcement: 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: September 29, 2021 – April 18, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2021 – September 30, 2021Rule: Stage 2 DBPREnforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2021 – September 30, 2021Rule: Stage 2 DBPREnforcement: 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

Water Utility Details

YALE
Population Served

1,227

Water Source

Purchased Surface Water

System ID

OK3006039

Frequently Asked Questions About Yale Water

Is Yale tap water safe to drink?

Yale, Oklahoma tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 108 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in Yale's water?

Of the 1 contaminants tested in Yale'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 Yale have any water quality violations?

Yes, Yale has 108 EPA violation(s) on record, with the most recent in 2025. Violation types include MON, MR, RPT. 53 of these are health-based violations, which are the most serious category.

Do I need a water filter in Yale?

Yale 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 Yale's tap water come from?

Yale's drinking water is sourced from purchased surface water and supplied by YALE. The system serves approximately 1,227 people. Surface water sources include rivers, lakes, and reservoirs.

How often is Yale'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. Yale'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 Yale's water compare to other cities in Oklahoma?

Yale'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 Yale's water quality?

If you have concerns about Yale'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 (YALE) 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.

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