Chloride in South Dakota well water
In South Dakota, chloride was detected in 96% of 28,270 tested private well samples.
Chloride mainly comes from road salt and water softener discharge. Above 250 mg/L water tastes salty and corrodes plumbing. Rising chloride in a well usually means road salt is reaching the aquifer.
Check your chloride number
Type the value from your lab report. It is compared to the EPA limit, the same way the full interpretation does it.
Test your South Dakota well for chloride
Certified lab analysis of your own tap water, bottles and prepaid return shipping included. The Essential well panel covers arsenic, uranium, nitrate, lead, copper, manganese, iron, sodium and bacteria; radon and PFAS are add-ons.
Order the Tap Score well water test kit, from $209Already tested? Upload the report
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Systems that remove chloride
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Some links below are affiliate links. If you buy through one, the merchant pays us a commission at no extra cost to you. It does not change which products we list or what the data says.
For chloride
Under-sink reverse osmosis system
under-sink or countertop, about $300
Look for NSF/ANSI 58 certification listing the contaminant you need removed.
Rather have it installed and sized for your well? Book a free in-home water test with a licensed local company.
Where to get a well tested for chloride in South Dakota: certified labs, state programs and prices.
By county, from individual samples
Public monitoring samples against the EPA limit; counties with at least 30 samples.
| County | Above EPA limit | Samples | Detected | Median | Highest |
|---|---|---|---|---|---|
| Gregory | no limit | 156 | 100% | 20 | 250 mg/L |
| Faulk | no limit | 99 | 100% | 260 | 2,800 mg/L |
| Davison | no limit | 350 | 100% | 110 | 460 mg/L |
| Dewey | no limit | 113 | 100% | 44 | 8,870 mg/L |
| Edmunds | no limit | 121 | 100% | 68 | 1,800 mg/L |
| Douglas | no limit | 186 | 100% | 81.5 | 590 mg/L |
| Buffalo | no limit | 81 | 100% | 88 | 2,800 mg/L |
| Aurora | no limit | 479 | 100% | 91 | 1,150 mg/L |
| Campbell | no limit | 624 | 100% | 50 | 3,260 mg/L |
| Charles Mix | no limit | 433 | 100% | 147 | 1,220 mg/L |
| Brown | no limit | 736 | 100% | 152 | 2,900 mg/L |
| Bennett | no limit | 172 | 100% | 4 | 81 mg/L |
| Brule | no limit | 60 | 100% | 113 | 625 mg/L |
| Corson | no limit | 147 | 100% | 19 | 68,500 mg/L |
| Haakon | no limit | 62 | 100% | 198 | 2,860 mg/L |
- Central Hyde UT, Hyde County100% detected of 40
- North Hyde UT, Hyde County100% detected of 34
- North Dewey UT, Dewey County100% detected of 65
- Alpena township, Jerauld County100% detected of 52
- Plain Center township, Charles Mix County100% detected of 30
- Central Mellette UT, Mellette County100% detected of 43
- Jefferson township, Union County100% detected of 94
- Civil Bend township, Union County100% detected of 57
- Kennedy township, Charles Mix County100% detected of 37
- Chester township, Lake County100% detected of 63
- Howard township, Charles Mix County100% detected of 66
- Lake View township, Lake County100% detected of 38
- Rutland township, Lake County100% detected of 33
- South Ziebach UT, Ziebach County100% detected of 38
- Badus township, Lake County100% detected of 33
- Bryan township, Charles Mix County100% detected of 58
- Orland township, Lake County100% detected of 32
- West McPherson UT, McPherson County100% detected of 35
- White Swan township, Charles Mix County100% detected of 48
- Lower Brule UT, Lyman County100% detected of 91
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. chloride counts and shares are listed on each county and town page with their sources.