Jefferson City, MO 65109

4 water systems • 48,838 residents

Good water quality with few concerns

B

Score: 78/100

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

80

Violations on Record

11

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count10 / 25
Violation History22 / 25
Contaminant Severity22 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score78%

78 / 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.

Jefferson City vs MO & National Average

Detected Contaminants

15 contaminants detected across water systems serving this ZIP code

ContaminantCategory
Lead and Copper RuleHeavy Metal
LEAD AND COPPER RULE REVISIONSHeavy Metal
Coliform (TCR)Microorganism
1,1,1-TrichloroethaneOther
Consumer Confidence RuleOther
Gross Alpha, Excl. Radon and URadiological
Radium-226Radiological
Radium-228Radiological
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:
COLE COUNTY PWSD 3, MO AMERICAN LAKE CARMEL, COLE COUNTY PWSD 1, MO AMERICAN JEFFERSON CITY DISTRICT
Population Served:
48,838
Systems With Violations:
4 of 4
Major Violations:
51
Enforcement Actions:
78

Nearby Areas

65110

Jefferson City • 3 mi away

B

65023

Centertown • 5 mi away

D

65074

Russellville • 7.5 mi away

A

65101

Jefferson City • 8.2 mi away

B

65076

Saint Thomas • 8.9 mi away

C

65043

Holts Summit • 12.6 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.