Idaho Falls

Idaho Falls, ID receives a water quality score of 71/100 (Grade C) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 8 public water systems serving the area.

Idaho Falls's water quality is near the national average. While most systems meet EPA standards, some violations have been recorded. Residents may wish to review their specific water system's report for contaminant details.

Idaho Falls's score of 71 is 9 points below the Idaho state average of 80, and below the nationwide average of roughly 78/100 across all U.S. states.

For home buyers looking at Idaho Falls, a mid-size city in Idaho's Mountain West region of agricultural valleys and forested mountains, the local water quality presents a mediocre profile that warrants a closer look. Because the city is served by several separate water systems, the actual quality of the tap water can vary depending on which network supplies a given household. While the supply avoids critical failure, these moderate ratings suggest there is room for improvement, making it wise for incoming residents to verify the specific water conditions at their prospective property.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Idaho water quality rankings report →