HENRY
PWSID: SD4600153 · Henry, SD · Serves 256 people
According to EPA Safe Drinking Water Information System (SDWIS), HENRY (PWSID SD4600153) in Henry, SD is listed as a CWS water system covering about 256 people. The same extract lists 3 health-based violation records spanning 2018-2025. Those 3 health-based rows for HENRY cover contaminants such as Stage 1 Disinfectants and Disinfection Byproducts Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
HENRY has 3 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Stage 1 Disinfectants and Disinfection Byproducts Rule. Recorded violations span 2018–2025. Day-to-day primacy enforcement for this system runs through the South Dakota drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the South Dakota state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- SD4600153
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Henry, SD
- Population Served
- 256
- Health Violations
- Yes (3)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 3 | 3 |
Violation History (3)
| Contaminant | Health | Date |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | May 15, 2025 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2018 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2018 |
Frequently Asked Questions
What does EPA SDWIS list for HENRY?
How many people does HENRY serve?
What violations does HENRY have?
What contaminants have been found in HENRY water?
Compare beyond South Dakota
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest HENRY on cumulative violation count (3) and EPA-reported population served (256). Violation-count peers include Mohegan Tribal Utility Authority, RED CLIFF NORTH, Tesuque Pueblo.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
HENRY (SD4600153) is drawn from EPA SDWIS. Nearby county systems in this extract include WATERTOWN MUNICIPAL UTILITIES; SIOUX RURAL WATER SYSTEM; FLORENCE; SOUTH SHORE. Health-based rows (3 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.