Coeur D Alene, ID 83815

3 water systems • 56,793 residents

Good water quality with few concerns

B

Score: 74/100

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

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

19

Contaminants Detected

144

Violations on Record

14

Health-Based Violations

0

Recent Violations

Grade Breakdown

Contaminant Count6 / 25
Violation History19 / 25
Contaminant Severity19 / 25
System Compliance0 / 15
Enforcement History0 / 10
Total Score74%

74 / 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.

Coeur D Alene vs ID & National Average

Detected Contaminants

19 contaminants detected across water systems serving this ZIP code

ContaminantCategory
NitrateAgricultural
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
AsbestosInorganic
FluorideInorganic
Coliform (TCR)Microorganism
Revised Total Coliform RuleMicroorganism
Gross Alpha, Excl. Radon and URadiological

Water System Information

Systems Serving This ZIP:
COEUR D ALENE CITY OF, MORRISON ESTATES HOMEOWNER WATER ASSN, DALTON WATER ASSN INC
Population Served:
56,793
Systems With Violations:
3 of 3
Major Violations:
37
Enforcement Actions:
29

Nearby Areas

83835

Hayden • 2.9 mi away

B

83858

Rathdrum • 5.6 mi away

B

83801

Athol • 6.1 mi away

B

83814

Coeur D Alene • 8.1 mi away

D

83869

Spirit Lake • 8.6 mi away

C

83854

Post Falls • 11 mi away

D

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.