BUFFALO GAP
PWSID: SD4600077 · Buffalo Gap, SD · Serves 126 people
According to EPA Safe Drinking Water Information System (SDWIS), BUFFALO GAP (PWSID SD4600077) in Buffalo Gap, SD is listed as a CWS water system covering about 126 people. The same extract lists 13 health-based violation records spanning 2011-2025. Those 13 health-based rows for BUFFALO GAP cover contaminants such as Stage 1 Disinfectants and Disinfection Byproducts Rule, Groundwater Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
BUFFALO GAP has 13 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. 2 distinct EPA contaminant codes appear in this system's record, including Stage 1 Disinfectants and Disinfection Byproducts Rule, Groundwater Rule. Recorded violations span 2011–2025. 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)
- SD4600077
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Buffalo Gap, SD
- Population Served
- 126
- Health Violations
- Yes (13)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 10 | 10 |
| Groundwater Rule | 3 | 3 |
Violation History (13)
| Contaminant | Health | Date |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Jul 7, 2025 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | May 21, 2024 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Jan 1, 2018 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Jan 1, 2018 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2017 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2017 |
| Groundwater Rule | Yes | May 14, 2016 |
| Groundwater Rule | Yes | May 14, 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2014 |
| Groundwater Rule | Yes | May 30, 2013 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2011 |
Frequently Asked Questions
What does EPA SDWIS list for BUFFALO GAP?
How many people does BUFFALO GAP serve?
What violations does BUFFALO GAP have?
What contaminants have been found in BUFFALO GAP water?
Compare beyond South Dakota
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest BUFFALO GAP on cumulative violation count (13) and EPA-reported population served (126). Violation-count peers include SCUA Lower Peridot, Cocopah Bend RV & Golf Resort, BETHEL HEIGHTS WATER SYSTEM.
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
BUFFALO GAP (SD4600077) is drawn from EPA SDWIS. Nearby county systems in this extract include PINE RIDGE WATER SYSTEM; KYLE WATER SYSTEM; OGLALA RWS PIPELINE; WANBLEE EAST. Health-based rows (13 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.