TapSafetyReport
C46/100

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

Serving 6,425 residents · Oklahoma

What's In Ochelata'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)
0.003 mg/L0.015 mg/LAbove Goal

EPA Violation History

12

Violations (last 5yr)

1

Unresolved

2

Health-Related

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: October 1, 2024 – July 11, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2024 – March 31, 2024Enforcement: Formal — state order issued
TIER 3Resolved

Surface water treatment technique failure

When: October 2, 2023 – July 11, 2023Enforcement: Resolving — corrective action underway
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2023 – December 31, 2023Enforcement: Formal — state order issuedVerify on EPA.gov
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: April 1, 2022 – June 30, 2022Enforcement: 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: April 1, 2022 – June 30, 2022Enforcement: 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: April 1, 2022 – June 30, 2022Enforcement: 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: April 1, 2022 – June 30, 2022Enforcement: 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: January 1, 2022 – March 31, 2022Enforcement: 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: January 1, 2022 – March 31, 2022Enforcement: 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: January 1, 2022 – March 31, 2022Enforcement: 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: January 1, 2022 – March 31, 2022Enforcement: 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

GRAND LAKE PWA
Population Served

2,800

Water Source

Groundwater

System ID

OK1021691

WASHINGTON CO RWD #1
Population Served

1,375

Water Source

Purchased Surface Water

System ID

OK3007401

WASHINGTON CO RWD #2
Population Served

2,250

Water Source

Purchased Surface Water

System ID

OK3007403

Frequently Asked Questions About Ochelata Water

Is Ochelata tap water safe to drink?

Ochelata, Oklahoma tap water receives a grade of C (46/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 144 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in Ochelata's water?

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

Yes, Ochelata has 144 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MR. 34 of these are health-based violations, which are the most serious category.

Do I need a water filter in Ochelata?

Ochelata 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 Ochelata's tap water come from?

Ochelata's drinking water is sourced from groundwater and supplied by GRAND LAKE PWA and 2 other water system(s). The system serves approximately 6,425 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.

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

Ochelata's water quality score of 46/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Oklahoma state page to see how all cities in the state compare.

What should I do if I'm concerned about Ochelata's water quality?

If you have concerns about Ochelata'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 (GRAND LAKE 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.

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