Sioux Falls Water Quality
South Dakota
According to EPA SDWIS, Sioux Falls, South Dakota is served by 8 community water systems covering about 223,381 people. The same extract lists 10 health-based violation records, most recently coded 0400 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Sioux Falls, South Dakota is delivered through 8 EPA-regulated community water systems serving an estimated 223,381 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 10 violation records across the 8 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: Stage 1 Disinfectants and Disinfection Byproducts Rule, Groundwater Rule. 17 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the South Dakota drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| SIOUX FALLS | 216,462 | 1 | Health |
| LINCOLN COUNTY RURAL WATER SYSTEM | 5,965 | 0 | Clean |
| PINE LAKE HILLS | 320 | 3 | Health |
| VALLEY VIEW ESTATES | 230 | 2 | Health |
| MORROW CROSSING MHC | 150 | 0 | Clean |
| SKYLINE HEIGHTS | 110 | 1 | Health |
| PROSPECT MANOR MHC | 94 | 0 | Clean |
| BEULAH LAND WATER | 50 | 3 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| PINE LAKE HILLS | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2025-07-07 |
| BEULAH LAND WATER | Groundwater Rule | 2023-03-27 |
| BEULAH LAND WATER | Groundwater Rule | 2021-12-24 |
| VALLEY VIEW ESTATES | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2021-08-15 |
| BEULAH LAND WATER | Groundwater Rule | 2017-10-05 |
| PINE LAKE HILLS | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2017-02-01 |
| PINE LAKE HILLS | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2012-02-01 |
| SKYLINE HEIGHTS | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2010-07-01 |
| SIOUX FALLS | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2009-12-08 |
| VALLEY VIEW ESTATES | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2007-07-16 |
What are Sioux Falls's health-based records for?
Sioux Falls's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 7 | 4 |
| Groundwater Rule | 3 | 1 |
TRI Facilities in Sioux Falls
| Facility | Total Releases |
|---|---|
| Smithfield Packaged Meats Corp - Sioux Falls | 21.3M lbs |
| Masterbrand Cabinets LLC | 421.0K lbs |
| Design Tanks LLC | 247.4K lbs |
| Knife River-Madison Street | 1.7K lbs |
| Knife River-Rice Street | 879 lbs |
| Diamond Mowers Inc. | 423 lbs |
| Graco Inc Sioux Falls | 162 lbs |
| Hansen Manufacturing DBA Hi-Roller Conveyors | 92 lbs |
| US Dod Usaf Joe Foss Field Ang Sd | 60 lbs |
| Hancock Concrete Products | 21 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Sioux Falls, South Dakota? ▼
How many water violations does Sioux Falls have in this EPA extract? ▼
What contaminants were found in Sioux Falls water? ▼
How many water systems serve Sioux Falls? ▼
Where does Sioux Falls get its drinking water? ▼
Are there pollution sources near Sioux Falls? ▼
How does Sioux Falls compare in South Dakota?
Of the 230 South Dakota places with at least one community water system on file, Sioux Falls ranks #7 by number of systems (8).
Either side of it: Pine Ridge (18), Aberdeen (14), Agency Village (7), Britton (7)
About This Data
Figures here are the current EPA SDWIS extract joined to the 8 community water systems whose service area lists Sioux Falls, ranked against the 230 South Dakota places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.