Spanaway, WA 98387

6 water systems • 32,533 residents

Excellent water quality with minimal contaminants

A

Score: 81/100

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

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

13

Contaminants Detected

134

Violations on Record

13

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count12 / 25
Violation History22 / 25
Contaminant Severity22 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score81%

81 / 100 points

Recommended Water Filters

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

Consult a water quality specialist for personalized recommendations.

Spanaway vs WA & National Average

Detected Contaminants

13 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
ArsenicHeavy Metal
BariumHeavy Metal
CadmiumHeavy Metal
ChromiumHeavy Metal
Lead and Copper RuleHeavy Metal
MercuryHeavy Metal
SeleniumHeavy Metal
FluorideInorganic
Coliform (TCR)Microorganism
Consumer Confidence RuleOther
DiquatOther
Gross Alpha, Excl. Radon and URadiological

Water System Information

Systems Serving This ZIP:
WINCHESTER MOBILE HOMES WATER, LITTLE CEDAR PARK, SPANAWAY WATER COMPANY, MCGEE GUEST HOME, PINEWOOD GLEN MUTUAL WATER ASSN +1 more
Population Served:
32,533
Systems With Violations:
6 of 6
Major Violations:
44
Enforcement Actions:
114

Nearby Areas

98375

Puyallup • 3.7 mi away

F

98446

Tacoma • 5.2 mi away

A

98433

Tacoma • 5.9 mi away

D

98444

Tacoma • 6.4 mi away

C

98388

Steilacoom • 6.5 mi away

A

98338

Graham • 6.6 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.