Rancho Cordova, CA 95670

13 water systems • 135,073 residents

Good water quality with few concerns

B

Score: 68/100

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

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

24

Contaminants Detected

397

Violations on Record

222

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count1 / 25
Violation History21 / 25
Contaminant Severity4 / 25
System Compliance5 / 15
Enforcement History0 / 10
Total Score68%

68 / 100 points

Recommended Water Filters

  • ✓Point-of-Use Carbon Filter (NSF-certified for lead)
  • ✓Reverse Osmosis or Ion Exchange Filter
  • ✓Ultraviolet (UV) Purification
  • ✓Activated Carbon Filter (disinfection byproducts)
Compare filter types in our Filter Guide →

Consult a water quality specialist for personalized recommendations.

Rancho Cordova vs CA & National Average

Detected Contaminants

24 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
Nitrate-NitriteAgricultural
NitriteAgricultural
Total Haloacetic Acids (HAA5)Disinfection Byproduct
TTHMDisinfection Byproduct
Antimony, TotalHeavy Metal
ArsenicHeavy Metal
BariumHeavy Metal
Beryllium, TotalHeavy Metal
CadmiumHeavy Metal
ChromiumHeavy Metal
Lead and Copper RuleHeavy Metal
MercuryHeavy Metal
NickelHeavy Metal
SeleniumHeavy Metal
Thallium, TotalHeavy Metal
FluorideInorganic
Coliform (TCR)Microorganism
E. COLIMicroorganism
Revised Total Coliform RuleMicroorganism
Consumer Confidence RuleOther
Public NoticeOther
Surface Water Treatment RuleOther
Gross Alpha, Excl. Radon and URadiological

Water System Information

Systems Serving This ZIP:
HOMETOWN COLONIAL ESTATES LLC, GOLDEN STATE WATER COMPANY - SOUTH SHORE, GOLDEN STATE WATER CO - ARDEN WATER SERV, GOLDEN STATE WATER CO. - ROBBINS, GOLDEN STATE WATER COMPANY - LAKE MARIE +5 more
Population Served:
135,073
Systems With Violations:
9 of 13
Major Violations:
87
Enforcement Actions:
386

Nearby Areas

95630

Folsom • 2.2 mi away

A

95655

Mather • 3.1 mi away

A

95608

Carmichael • 3.7 mi away

C

95628

Fair Oaks • 4 mi away

A

95864

Sacramento • 5.9 mi away

D

95610

Citrus Heights • 6.4 mi away

A

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.