F0/100

DAVIS — Water Quality Report 2026

Serving 2,610 people · Oklahoma

Water Source

Surface Water

County

—

System ID

OK1010822

Violations

Contaminant Test Results

1 contaminant above EPA health goals

Contaminant	Detected	Limit (MCL)	Goal (MCLG)	Status
Lead (90th percentile)	0.001 mg/L	0.015 mg/L	0 mg/L	Above Goal

EPA Violation History

Violations (last 5yr)

Unresolved

Health-Related

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: June 1, 2025 – June 30, 2025Rule: Stage 1 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: June 1, 2025 – June 30, 2025Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway

TIER 2Resolved

Failed treatment technique requirements

When: May 1, 2025 – May 31, 2025Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued

TIER 2Resolved

Failed treatment technique requirements

When: April 1, 2025 – April 30, 2025Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued

TIER 1 — URGENTResolved

Violation related to Nitrate

When: February 1, 2025 – February 28, 2025Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued

TIER 2Resolved

Failed treatment technique requirements

When: February 1, 2025 – February 28, 2025Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued

TIER 1 — URGENTResolved

Violation related to Nitrate

When: January 1, 2025 – January 31, 2025Rule: 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

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, 2024 – December 31, 2024Enforcement: 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

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: January 1, 2023 – December 31, 2023Enforcement: 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, 2023 – December 31, 2023Enforcement: 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 – December 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

Frequently Asked Questions About DAVIS

Is DAVIS water safe to drink?

DAVIS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 40 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has DAVIS detected?

1 contaminants were tested in DAVIS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does DAVIS have any EPA violations?

Yes, DAVIS has 40 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, TT, RPT. 19 are health-based violations.

How many people does DAVIS serve?

DAVIS serves approximately 2,610 people, Oklahoma.

What type of water does DAVIS provide?

DAVIS sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OK1010822.

How does DAVIS compare to other utilities in Oklahoma?

DAVIS 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.