YANKTON
PWSID: SD4600423 · Yankton, SD · Serves 15,411 people
According to EPA Safe Drinking Water Information System (SDWIS), YANKTON (PWSID SD4600423) in Yankton, SD is listed as a CWS water system covering about 15,411 people. The same extract lists 12 health-based violation records spanning 2010-2020. Those 12 health-based rows for YANKTON cover contaminants such as TTHM, Stage 1 Disinfectants and Disinfection Byproducts Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
YANKTON has 12 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 TTHM, Stage 1 Disinfectants and Disinfection Byproducts Rule. Recorded violations span 2010–2020. 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)
- SD4600423
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Yankton, SD
- Population Served
- 15,411
- Health Violations
- Yes (12)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 10 | 10 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 2 | 2 |
Violation History (12)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2011 |
| Stage 1 Disinfectants and Disinfection Byproducts Rule | Yes | Feb 1, 2010 |
Frequently Asked Questions
What does EPA SDWIS list for YANKTON?
How many people does YANKTON serve?
What violations does YANKTON have?
What contaminants have been found in YANKTON water?
Compare beyond South Dakota
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest YANKTON on cumulative violation count (12) and EPA-reported population served (15,411). Violation-count peers include SAC & FOX (MESKWAKI) IN IOWA, Walker River Paiute Tribe, CRAIG PUBLIC WORKS. Population peers include OCEAN TWP DEPT OF UTILITIES, HARRIS COUNTY FWSD 61, KENMORE VILLAGE.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
YANKTON (SD4600423) is drawn from EPA SDWIS. Nearby county systems in this extract include IRENE; GAYVILLE; MISSION HILL; EAST WINDS COURT, INC.. Health-based rows (12 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.