Water Quality in Delaware, OK (74027)

EPA violation data for public water systems serving ZIP code 74027.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

759

Population

1

Water Systems

103

Violations (5yr)

5

Health-Based

Location

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Water Systems Serving This Area (1)

Delaware

5 health-based
Surface water 456 people served
103 violations (5yr) ยท 5 health-based
Lead tested: 0.99 ppb (limit: 15 ppb) ✓

Contaminants Found

CARBON, TOTALHealth-Based
5 violations
All resolved
Interim Enhanced Surface Water Treatment RuleMonitoring
45 violations
All resolved
Public NoticeMonitoring
35 violations
Has active
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

6 violations
Has active
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

4 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
0.99 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

Delaware (74027) has more violations than 96% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 103.

Fewer violations 96th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Whole House Carbon Filter

A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.

Targets:Chlorine, Sediment, Taste & Odor

Look for:NSF/ANSI 42 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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