Public water system · SD4600154
ActiveHermosa-Old System
Community water system in Custer County, South Dakota, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
420
Service connections
277
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-04-01 | 3A | 8000 | No | Resolved |
| 2021-10-01 | 03 | 4006 | No | Resolved |
| 2021-10-01 | 03 | 4000 | No | Resolved |
| 2021-10-01 | 03 | 4010 | No | Resolved |
| 2010-02-01 | 12 | 0400 | Yes | Resolved |
| 2006-01-01 | 27 | 0999 | No | Resolved |
| 2005-10-01 | 27 | 0999 | No | Resolved |
| 2005-07-01 | 27 | 0999 | No | Resolved |
| 2004-07-01 | 71 | 7000 | No | Resolved |
| 1995-07-01 | 23 | 3100 | No | Archived |
| 1991-07-01 | 24 | 3100 | No | Archived |
| 1990-12-14 | 06 | — | No | Archived |
Hermosa-Old System: frequently asked questions
Is Hermosa-Old System's water safe to drink?
Hermosa-Old System is an active community water system regulated under the Safe Drinking Water Act, overseen by the SD state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Hermosa-Old System?
Hermosa-Old System (PWSID SD4600154) is a local government-owned community water system, regulated by the SD state drinking water program.
How many people does Hermosa-Old System serve?
Hermosa-Old System reports serving 420 people through 277 service connections in Custer County, South Dakota.
Where does Hermosa-Old System get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Custer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Weatherford | Custer | 10,833 | Community | Groundwater |
| Miles City City of | Custer | 9,565 | Community | Surface water |
| Clinton | Custer | 8,883 | Community | Surface water |
| Broken Bow, City of | Custer | 3,568 | Community | Groundwater |
| Laughing Water Restaurant at Crazy H | Custer | 2,055 | Non-transient non-community | Groundwater |
| Round Mountain Wsd | Custer | 1,950 | Community | Groundwater |