We found 46 public water systems in Custer county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Round Mountain Wsd | County of Custer | 1,950 | 0 | 7 |
| Sky Ranch Horn Creek | County of Custer | 582 | 0 | 0 |
| La Vista Cg | County of Custer | 251 | 0 | 7 |
| Lodge At San Isabel | County of Custer | 200 | 0 | 4 |
| Rainbow Trail Lutheran Camp | County of Custer | 168 | 0 | 1 |
| Lake Isabel - Cisneros Th 3007 | County of Custer | 126 | 0 | 0 |
| Alvarado Cg 4122 | County of Custer | 113 | 0 | 0 |
| Lake Isabel-picnic Ground 3010 | County of Custer | 100 | 0 | 0 |
| Lake Isabel Picnic Ground 3017 | County of Custer | 100 | 0 | 0 |
| Mtn Meadows Summer Camp | County of Custer | 98 | 0 | 0 |
| Alpine Lodge Dinner Rest And Cbn | County of Custer | 79 | 0 | 0 |
| Ponderosa Cg | County of Custer | 72 | 0 | 0 |
| Trinity Ranch - Not Open 94/95 | County of Custer | 63 | 0 | 0 |
| Ophir Creek No 4 | County of Custer | 62 | 0 | 0 |
| Trotter Campground | County of Custer | 60 | 0 | 0 |
| Forestdale Lodge-holy Cross Ca | County of Custer | 60 | 0 | 0 |
| St Charles Cg | County of Custer | 54 | 0 | 0 |
| Operation Uplift | County of Custer | 46 | 0 | 0 |
| Tv Hills Water | County of Custer | 38 | 0 | 0 |
| Lake Creek Cg | County of Custer | 33 | 0 | 0 |
| Davenport Cg No 2 | County of Custer | 31 | 0 | 0 |
| A Painted View Ranch | County of Custer | 31 | 0 | 0 |
| Hermit Basin Lodge | County of Custer | 30 | 0 | 0 |
| Spruce Cg | County of Custer | 27 | 0 | 0 |
| Ophir Creek Cg - 0313 | County of Custer | 26 | 0 | 0 |
| Lake Deweese Lodge | County of Custer | 26 | 0 | 0 |
| Wet Mountain Meat Packing Co | County of Custer | 25 | 0 | 0 |
| Baverli Lodge | County of Custer | 25 | 0 | 0 |
| Bauer-li Lodge | County of Custer | 25 | 0 | 0 |
| Pine Lodge | County of Custer | 25 | 0 | 0 |
| Spreadeagle Hoa | County of Custer | 13 | 0 | 0 |
| Lake Isabel Cisneros Cg 3024 | County of Custer | 0 | 0 | 0 |
| Lake Isabel Stcharlescg 3014 | County of Custer | 0 | 0 | 0 |
| Southside Cg 3020 | County of Custer | 0 | 0 | 0 |
| Horn Creek Lodge | County of Custer | 0 | 0 | 0 |
| Lake Isabel Pg 3016 | County of Custer | 0 | 0 | 0 |
| Horn Creek Girls Ranch | County of Custer | 0 | 0 | 0 |
| Davenport Cg No 1 | County of Custer | 0 | 0 | 0 |
| Lake Isabel Cisneros Th 3008 | County of Custer | 0 | 0 | 0 |
| Horn Creek Recreation Center | County of Custer | 0 | 0 | 0 |
| Horn Creek Boys Ranch | County of Custer | 0 | 0 | 0 |
| Ophir Creek Cg 0312 | County of Custer | 0 | 0 | 0 |
| Wetmore Gen Store And Steakhouse | County of Custer | 0 | 0 | 0 |
| Lone Pine Inn | County of Custer | 0 | 0 | 0 |
| Horn Creek Mtn Meadows | County of Custer | 0 | 0 | 0 |
| Historic Pines Ranch | County of Custer | 0 | 0 | 0 |