Water quality in Caldwell, Idaho
Caldwell is in Canyon County. 142 active public water systems serve the county; 105 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Canyon County
83 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Caldwell Housing Authority |
1,100 | 1 | 1.1 mi | |
| Purple Sage Community |
98 | 3 | 1.5 mi | |
| Rio Vista Water Company 3 |
140 | 1 | 1.5 mi | |
| Country Club Subdivisions Water Assn |
120 | 0 | 1.5 mi | |
| Drake Subd |
150 | 9 | 1.6 mi | |
| D and S Purple Sage Ranchettes |
70 | 1 | 1.7 mi | |
| Par Estates Homeowners Assn |
140 | 1 | 1.7 mi | |
| Sunlight Terrace |
234 | 0 | 3.0 mi | |
| Kimpton Acres Third Subd |
88 | 3 | 3.3 mi | |
| Middleton City of |
13,190 | 0 | 3.5 mi | |
| Northridge Estates Water Assn |
75 | 0 | 4.0 mi | |
| H and L Park |
43 | 0 | 4.5 mi | |
| Lakeys Cafe and Trailer Park |
300 | 1 | 4.5 mi | |
| Caldwell City of |
78,740 | 1 | 5.0 mi | |
| Notus City of |
539 | 1 | 5.4 mi | |
| Lansing Meadows |
320 | 2 | 6.3 mi | |
| Greenleaf City of |
846 | 1 | 6.9 mi | |
| Maverick Subd Lasher Construction |
90 | 2 | 7.1 mi | |
| Owyhee Village Subd Water Assn INC |
200 | 2 | 7.1 mi | |
| Stecher Mutual Water Company |
62 | 1 | 7.5 mi | |
| Stecher Water Users Assn |
70 | 0 | 7.5 mi | |
| Lakeview Water Company 1 |
100 | 2 | 7.7 mi | |
| Somerset West Water Corp |
203 | 1 | 7.7 mi | |
| Burnie Subd |
55 | 1 | 7.8 mi | |
| EL Rancho Heights |
300 | 1 | 8.1 mi |
Non-community systems in Canyon County (58: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Canyon County, nearest to Caldwell first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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. Retrieved from ECHO on Oct 11, 2026.