We found 24 public water systems in Union county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Clayton Municipal Supply | Clayton | 2,400 | 0 | 3 |
| Northeast Nm Detention Facility | Clayton | 703 | 0 | 4 |
| Des Moines Water System | Des Moines | 200 | 0 | 7 |
| Eagle Investment Company | Clayton | 200 | 0 | 0 |
| Jones & Harkins, Inc | County of Union | 200 | 0 | 0 |
| Clayton Lake State Park | Clayton | 178 | 0 | 4 |
| Capulin Volcano National Monument | Capulin | 175 | 0 | 2 |
| Sierra Grande Highway Rest Area | Des Moines | 75 | 0 | 0 |
| Rosebud | 60 | 0 | 0 | |
| Capulin Rv Park | Capulin | 55 | 0 | 0 |
| Western Of America - Clayton | Clayton | 55 | 0 | 0 |
| Highway 87 Rest Area | Clayton | 50 | 0 | 0 |
| Folsom Village Inn | Folsom | 40 | 0 | 0 |
| The Mandala Center | County of Union | 30 | 0 | 0 |
| Grenville Water System | Grenville | 25 | 0 | 0 |
| Sierra Grande Co-op | County of Union | 25 | 0 | 0 |
| Bravo Dome Se Facility | County of Union | 20 | 0 | 0 |
| Clayton Livestock Researh Cntr | County of Union | 14 | 0 | 0 |
| Capulin Chevron | County of Union | 0 | 0 | 0 |
| Capulin Country Store | Capulin | 0 | 0 | 0 |
| Reeses Store | County of Union | 0 | 0 | 0 |
| Trail Drive-in Theater | County of Union | 0 | 0 | 0 |
| Sedan Country Store | Sedan | 0 | 0 | 0 |
| Amistad Public School | Amistad | 0 | 0 | 0 |