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B66/100

LINCOLN CO RW & SEWER DIST 4 — Water Quality Report 2026

Serving 2,525 people · Oklahoma

Water Source
Purchased Surface Water
County
—
System ID
OK2004105
Violations
23

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.002 mg/L0.015 mg/LAbove Goal

EPA Violation History

8

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2025 – August 20, 2025Enforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: October 2, 2023 – January 15, 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: 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, 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

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 19, 2021 – March 7, 2022Rule: Consumer Confidence RuleEnforcement: 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: September 9, 2021 – November 16, 2021Rule: 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 LINCOLN CO RW & SEWER DIST 4

Is LINCOLN CO RW & SEWER DIST 4 water safe to drink?

LINCOLN CO RW & SEWER DIST 4 water receives a grade of B (66/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.

What contaminants has LINCOLN CO RW & SEWER DIST 4 detected?

1 contaminants were tested in LINCOLN CO RW & SEWER DIST 4's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does LINCOLN CO RW & SEWER DIST 4 have any EPA violations?

Yes, LINCOLN CO RW & SEWER DIST 4 has 23 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 2 are health-based violations.

How many people does LINCOLN CO RW & SEWER DIST 4 serve?

LINCOLN CO RW & SEWER DIST 4 serves approximately 2,525 people, Oklahoma.

What type of water does LINCOLN CO RW & SEWER DIST 4 provide?

LINCOLN CO RW & SEWER DIST 4 sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OK2004105.

How does LINCOLN CO RW & SEWER DIST 4 compare to other utilities in Oklahoma?

LINCOLN CO RW & SEWER DIST 4 scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Oklahoma state page for a full comparison of water systems.