Sodium in Minnesota well water
In Minnesota, sodium was detected in 100% of 15,026 tested private well samples.
Sodium enters wells with road salt and from softeners. EPA's guidance level of 20 mg/L matters for people on sodium-restricted diets; most people are not affected below 250 mg/L.
Check your sodium 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 Minnesota well for sodium
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 sodium
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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 sodium
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 sodium in Minnesota: 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 |
|---|---|---|---|---|---|
| Douglas | no limit | 78 | 100% | 7.5 | 240 mg/L |
| Dodge | no limit | 118 | 100% | 5.19 | 118 mg/L |
| Anoka | no limit | 744 | 100% | 12.0 | 369 mg/L |
| Dakota | no limit | 507 | 100% | 5.02 | 205 mg/L |
| Big Stone | no limit | 31 | 100% | 148 | 8,000 mg/L |
| Aitkin | no limit | 138 | 100% | 12.2 | 76.5 mg/L |
| Brown | no limit | 112 | 100% | 45.3 | 229 mg/L |
| Carlton | no limit | 268 | 100% | 8.7 | 434 mg/L |
| Carver | no limit | 98 | 100% | 27.1 | 116 mg/L |
| Benton | no limit | 127 | 100% | 11.2 | 87.3 mg/L |
| Chisago | no limit | 135 | 100% | 5.33 | 35 mg/L |
| Clay | no limit | 166 | 100% | 61.9 | 474 mg/L |
| Clearwater | no limit | 69 | 100% | 3.85 | 53.6 mg/L |
| Cottonwood | no limit | 47 | 100% | 12 | 555 mg/L |
| Faribault | no limit | 42 | 100% | 28.6 | 149 mg/L |
- White township, St. Louis County100% detected of 30
- Crystal, Hennepin County100% detected of 47
- Eden Prairie, Hennepin County100% detected of 41
- Brooklyn Center, Hennepin County100% detected of 155
- Minneapolis, Hennepin County100% detected of 61
- Fall Lake township, Lake County100% detected of 49
- Lake No. 2 UT, Lake County100% detected of 41
- Stony River township, Lake County100% detected of 36
- West Lakeland township, Washington County100% detected of 64
- Baytown township, Washington County100% detected of 34
- Grant, Washington County100% detected of 40
- Lake Elmo, Washington County100% detected of 169
- Scandia, Washington County100% detected of 38
- Woodbury, Washington County100% detected of 116
- Hugo, Washington County100% detected of 35
- Cottage Grove, Washington County100% detected of 173
- Babbitt, St. Louis County100% detected of 30
- Birch Lake UT, St. Louis County100% detected of 48
- Hibbing, St. Louis County100% detected of 42
- Grove Park-Tilden township, Polk County100% detected of 35
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. sodium counts and shares are listed on each county and town page with their sources.