Public water system record
Henry
Serves Henry, Codington County, SD · 256 people served
Federal records show 2 health-based violations and 21 monitoring/reporting issues for Henry in the last ten years, including an unresolved Stage 1 Disinfection Byproducts Rule violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 21
Key facts
- Henry buys its water from Clark Rural Water System.
- Most recent formal enforcement: compliance order (no penalty) by South Dakota, January 2020.
- Record on file since 1976, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 107 unknown out of 107 service lines.
Check whether Henry 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 | May 15, 2025 | Active | No |
|
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
|
210 | Feb 1, 2018 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Chlorine
Monitoring and reporting
|
Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2025 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
Monitoring violation
|
Apr 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Mar 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Feb 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jan 1, 2025 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Nov 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Jun 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Apr 1, 2024 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Oct 1, 2023 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2019 | Resolved |
|
Chlorine
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2018 | Resolved |
Full record since 1976
EPA's records for Henry go back to 1976. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 2 |
| 1990s | 0 | 1 |
| 2000s | 2 | 1 |
| October 19, 2016 to 2019 | 1 | 3 |
| 2020s | 1 | 18 |
Most recent health-based violation before October 19, 2016: Total Coliform (acute), began August 2004, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2004 | Resolved |
Enforcement actions
South Dakota regulators took 1 formal enforcement action against Henry in 2020. The most recent was a compliance order (no penalty) in January 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 28, 2020 | South Dakota | Compliance order (no penalty) | 1 violation (1 health-based): Stage 1 Disinfection Byproducts Rule |
What the violations mean
Stage 1 Disinfection Byproducts Rule
2 incidentsThe 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
Henry buys its water from Clark Rural Water System. It lists no wells or intakes of its own.
Buys water from
- Clark Rural Water System Clark, SD
Annual water quality report
Henry 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 Henry 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