HILL CITY, SD · Custer County
HERMOSA-OLD SYSTEM Water System
Consumer Confidence Report status
HERMOSA-OLD SYSTEM must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for HERMOSA-OLD SYSTEM.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.
System facts
- System ID (PWSID)
- SD4600154
- System type
- Community Water System
- Population served
- 420
- Service connections
- 277
- Ownership
- local government
- Water source
- groundwater (wells)
HERMOSA-OLD SYSTEM is one of 583 community water systems in South Dakota in the 500 or fewer people size category, serving 420 people from groundwater.
As of August 1, 2026, its federal record holds 4 entries between 1976 and 2021, all of which EPA lists as closed. Nothing has been added since 2021.
Of the 4, 3 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Radionuclides and Revised Rad Rule and the Consumer Confidence Rule.
Violation history
Monitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 2021 – December 31, 2021
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2004 – July 21, 2004
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
July 1, 1976 – June 30, 1980
ArchivedMonitoring, Regular
—Combined Radium (-226 and -228)
July 1, 1976 – June 30, 1980
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| October 1, 2021 – December 31, 2021 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| July 1, 2004 – July 21, 2004 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 1976 – June 30, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
| July 1, 1976 – June 30, 1980 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Common questions
Is HERMOSA-OLD SYSTEM required to publish a Consumer Confidence Report?
- Yes. HERMOSA-OLD SYSTEM is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is HERMOSA-OLD SYSTEM’s next Consumer Confidence Report due?
- HERMOSA-OLD SYSTEM’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does HERMOSA-OLD SYSTEM have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for HERMOSA-OLD SYSTEM.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
HERMOSA-OLD SYSTEM
6052554291
HILL CITY, SD 57745