Eureka, MO 63025

3 water systems • 16,618 residents

Good water quality with few concerns

B

Score: 63/100

Graded on EPA violations, contaminants, severity, compliance, and enforcement history. See methodology.

Data updated June 2026 • Sources: EPA ECHO and EPA Envirofacts

15

Contaminants Detected

112

Violations on Record

26

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count10 / 25
Violation History20 / 25
Contaminant Severity14 / 25
System Compliance5 / 15
Enforcement History0 / 10
Total Score63%

63 / 100 points

Recommended Water Filters

  • ✓Point-of-Use Carbon Filter (NSF-certified for lead)
  • ✓Ultraviolet (UV) Purification
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Eureka vs MO & National Average

Detected Contaminants

15 contaminants detected across water systems serving this ZIP code

ContaminantCategory
TTHMDisinfection Byproduct
Lead and Copper RuleHeavy Metal
Coliform (TCR)Microorganism
E. COLIMicroorganism
1,1,1-TrichloroethaneOther
Consumer Confidence RuleOther
Interim Enhanced Surface Water Treatment RuleOther
Surface Water Treatment RuleOther
1,1-DichloroethyleneVolatile Organic
1,2-DichloroethaneVolatile Organic
BenzeneVolatile Organic
Carbon tetrachlorideVolatile Organic
p-DichlorobenzeneVolatile Organic
TrichloroethyleneVolatile Organic
Vinyl chlorideVolatile Organic

Water System Information

Systems Serving This ZIP:
HAYFIELD WATER WORKS, VILLAS AT FOX RUN, JEFFERSON COUNTY PWSD 2
Population Served:
16,618
Systems With Violations:
2 of 3
Major Violations:
71
Enforcement Actions:
112

Nearby Areas

63049

High Ridge • 5.8 mi away

C

63011

Ballwin • 7.7 mi away

C

63069

Pacific • 8.6 mi away

C

63026

Fenton • 8.9 mi away

D

63017

Chesterfield • 10.7 mi away

C

63016

Cedar Hill • 11.1 mi away

C

Frequently Asked Questions

What does the grade mean?

Our A–F grade ranks this ZIP code's water quality against every other analyzed ZIP in the country, based on EPA data. A = among the best, F = among the most troubled.

Is my tap water safe to drink?

Water systems regulated by the EPA must comply with Safe Drinking Water Act standards. However, if you're concerned about water quality, consider a water filter appropriate for your contaminants.

How often is the data updated?

We update our data quarterly with the latest EPA ECHO and Envirofacts data. Historical violations are tracked to identify patterns.

What filters do you recommend?

Filter recommendations are based on detected contaminants in your area. See our Filter Guide for detailed information about different filter types.