Idaho
Canyon County drinking water quality
142 active public water systems serve 219,459 people in Canyon County. 37 are compliant, 105 had at least one EPA violation in the past three years, 6 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
84 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Kimpton Acres Third Subd |
88 | 3 | 2 | |
|
Westview Shervik Subd |
78 | 0 | 0 | |
|
Decoy Inn and RV Park |
75 | 0 | 0 | |
|
Horizon Ridge Subdivision |
75 | 2 | 0 | |
|
Mangum Heights Subd |
75 | 1 | 1 | |
|
Northridge Estates Water Assn |
75 | 0 | 0 | |
|
D and S Purple Sage Ranchettes |
70 | 1 | 1 | |
|
Stecher Water Users Assn |
70 | 0 | 0 | |
|
West River |
65 | 0 | 0 | |
|
Stecher Mutual Water Company |
62 | 1 | 0 | |
|
Rich Subd |
60 | 5 | 1 | |
|
Southshore Water Nampa |
60 | 1 | 0 | |
|
Valley View Water Nampa |
57 | 3 | 1 | |
|
Burnie Subd |
55 | 1 | 0 | |
|
M and M Mountain View Subd EM2 |
54 | 1 | 0 | |
|
Sunnyridge Property Owners |
53 | 1 | 1 | |
|
Dahl Subd |
51 | 4 | 3 | |
|
Christis Mobile Park |
50 | 1 | 0 | |
|
Lakeridge Second Subd |
50 | 2 | 0 | |
|
Northstar Subdivision |
50 | 4 | 0 | |
|
Skyline Water Assn |
50 | 0 | 0 | |
|
Lindenwood Water Assn |
48 | 1 | 1 | |
|
Vanal Heights Well Assn |
48 | 1 | 1 | |
|
Vanal Heights Sweet Water |
45 | 0 | 0 | |
|
Silver Spur Subdivision |
44 | 0 | 0 | |
|
H and L Park |
43 | 0 | 0 | |
|
Locust Subd |
42 | 2 | 2 | |
|
Shipman Place Subd |
40 | 1 | 1 | |
|
Wildrose Estates |
40 | 1 | 1 | |
|
Country Meadows Subd |
35 | 2 | 0 | |
|
Sunnyridge I Subd |
35 | 3 | 1 | |
|
Sunnyridge Subd 2 |
34 | 1 | 0 | |
|
Aurora Subd |
30 | 1 | 0 | |
|
Twin Bridges Subd |
28 | 1 | 1 |
Non-community systems (58: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (157, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Idaho records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.