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F0/100

WATONGA — Water Quality Report 2026

Serving 2,816 people · Oklahoma

Water Source
Groundwater
County
—
System ID
OK2000602
Violations
36

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.39 mg/L1.30 mg/LOver Limit
Lead (90th percentile)
0.002 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

3

Unresolved

4

Health-Related

TIER 1 — URGENTUnresolved

Exceeded the Maximum Contaminant Level (single sample)

When: April 1, 2025 – June 30, 2025Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved

Exceeded the Maximum Contaminant Level (single sample)

When: April 1, 2025 – June 30, 2025Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 1 — URGENTUnresolved

Exceeded the Maximum Contaminant Level (single sample)

When: January 1, 2025 – March 31, 2025Enforcement: Formal — state order issuedVerify 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 – 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

Surface water treatment technique failure

When: October 2, 2023 – April 29, 2024Enforcement: 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: October 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to conduct Level 1 Assessment

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

When: October 28, 2021 – November 1, 2022Rule: Consumer Confidence RuleEnforcement: 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 WATONGA

Is WATONGA water safe to drink?

WATONGA water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 36 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has WATONGA detected?

32 contaminants were tested in WATONGA's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).

Does WATONGA have any EPA violations?

Yes, WATONGA has 36 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, RPT, TT. 27 are health-based violations.

How many people does WATONGA serve?

WATONGA serves approximately 2,816 people, Oklahoma.

What type of water does WATONGA provide?

WATONGA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OK2000602.

How does WATONGA compare to other utilities in Oklahoma?

WATONGA scores 0/100 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.