Public water system record
North Hermosa Wud
On record as serving Hermosa, Custer County, SD · Serves 40 people
Federal records show 1 health-based violation and 2 monitoring/reporting issues for North Hermosa Wud in the last ten years, including an unresolved Stage 1 Disinfection Byproducts Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- North Hermosa Wud buys its water from Hermosa-Old System.
- Lead pipe inventory: 0 lead and 0 unknown out of 14 service lines.
Check whether North Hermosa Wud serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Feb 1, 2025 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Dec 13, 2025 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2024 | Resolved |
What the violations mean
Stage 1 Disinfection Byproducts Rule
1 incidentThe system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule
Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk
Where the water comes from
North Hermosa Wud buys its water from Hermosa-Old System. It lists no wells or intakes of its own.
Buys water from
- Hermosa-Old System Hermosa, SD
Annual water quality report
North Hermosa Wud must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask North Hermosa Wud for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by South Dakota.
Certified drinking water labs by state EPA guidance for private wells