Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Idaho Water Quality Reports
Water quality scores for 20 cities in Idaho
Coeur d'Alene
54,628 residents
Rexburg
31,441 residents
Pocatello
56,320 residents
Post Falls
38,485 residents
Chubbuck
15,570 residents
Mountain Home
14,308 residents
Caldwell
59,996 residents
Boise
235,684 residents
Moscow
26,047 residents
Idaho Falls
64,818 residents
Jerome
12,137 residents
Twin Falls
51,807 residents
Nampa
100,200 residents
Garden City
12,329 residents
Kuna
24,011 residents
Lewiston
34,203 residents
Ammon
17,694 residents
Meridian
117,635 residents
Blackfoot
12,346 residents
Eagle
31,384 residents
About Idaho Water Quality
This state's water quality reflects local geographic conditions, industrial activities, and water infrastructure. Water quality can vary significantly between communities, with some areas enjoying excellent tap water while others face contamination challenges requiring treatment.
Based on our analysis of 20 cities in Idaho, the average water quality score is 78/100. 3 cities have water quality scores below 70, indicating potential concerns that residents should be aware of. The highest-rated city is Eagle with a score of 66/100, while Coeur d'Alene has the most room for improvement at 95/100.
Water Sources in Idaho
Water sources typically include a combination of surface water (rivers, lakes, reservoirs) and groundwater. The specific sources serving your community depend on local geography and infrastructure. Check your local water utility's Consumer Confidence Report for details about your water source.
Common Water Contaminants in Idaho
These contaminants have been detected in various Idaho water systems
Idaho Water Regulations
State environmental and health agencies oversee drinking water quality in compliance with federal EPA standards. Public water systems are required to test regularly and report results to residents through annual Consumer Confidence Reports.
Health Considerations
Water quality concerns vary by location. Common issues include lead from older plumbing, agricultural runoff in rural areas, and industrial contamination near manufacturing sites. Check your local water quality report and consider testing if you have specific concerns.
Recommendations for Idaho Residents
Review your annual Consumer Confidence Report to understand local water quality. Consider having your water tested if you use a private well or have concerns about your plumbing. Water filters certified to remove specific contaminants can address most common water quality issues.
Frequently Asked Questions About Idaho Water Quality
Is Idaho's tap water safe to drink?
Water quality in Idaho varies by location. Our analysis shows an average score of 78/100 across 20 cities, with 3 cities showing potential concerns. We recommend checking your specific city's water quality report and considering filtration if needed.
What are the main water quality concerns in Idaho?
The most common water quality concerns in Idaho include disinfection byproducts (chlorination), lead (older infrastructure), nitrates (agricultural areas). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Should I use a water filter in Idaho?
Whether you need a water filter depends on your specific location and health concerns. With 3 cities in Idaho showing elevated contaminant levels, residents in those areas may benefit from filtration. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Where can I find my Idaho water quality report?
Public water systems in Idaho are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.