Water Quality: YANKTON, SD
8 water systems • 15,686 people served
No Health ViolationsWater Quality Summary
YANKTON is served by 8 public water systems with a combined service population of 15,686 people, and has 142 EPA Safe Drinking Water Act violations on record. None of those violations are health-based — the records reflect missed monitoring or reporting deadlines rather than a contaminant exceeding safe levels. YANKTON's violation count is 89% above the national average for South Dakota. Contaminants associated with violations include Chlorine, Coliform (TCR), TTHM.
Contaminants Found
Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.
Common source: Water treatment disinfectant added to kill harmful microorganisms
EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Water Systems Serving YANKTON
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| YANKTON | SD4600423 | Groundwater | 15,411 | 38 |
| EAST WINDS COURT, INC. | SD4602099 | Surface Water | 180 | 16 |
| TIMBERLAND PARK | SD4600412 | Surface Water | 95 | 88 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in South Dakota
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.