Mendocino, CA 95460

6 water systems • 459 residents

Good water quality with few concerns

B

Score: 75/100

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

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

6

Contaminants Detected

163

Violations on Record

107

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count19 / 25
Violation History22 / 25
Contaminant Severity3 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score75%

75 / 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.

Mendocino vs CA & National Average

Detected Contaminants

6 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
Total Haloacetic Acids (HAA5)Disinfection Byproduct
TTHMDisinfection Byproduct
Lead and Copper RuleHeavy Metal
Coliform (TCR)Microorganism
Gross Alpha, Excl. Radon and URadiological

Water System Information

Systems Serving This ZIP:
SHORELANDS ROAD & WATER COMPANY, BIG RIVER VISTA MUTUAL WATER COMPANY, POINT OF VIEW MUTUAL WATER CO, HILLS RANCH MUTUAL WATER COMPANY, SURFWOOD MUTUAL WATER CORPORATION +1 more
Population Served:
459
Systems With Violations:
6 of 6
Major Violations:
12
Enforcement Actions:
130

Nearby Areas

95437

Fort Bragg • 13.5 mi away

A

95470

Redwood Valley • 14.6 mi away

B

95432

Elk • 17.9 mi away

A

95410

Albion • 21.1 mi away

A

95482

Ukiah • 22.8 mi away

A

95488

Westport • 23.7 mi away

B

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.