Sodium in Iowa well water
In Iowa, sodium was detected in 100% of 13,011 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 Iowa 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 Iowa: 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 |
|---|---|---|---|---|---|
| Adams | no limit | 35 | 100% | 12 | 270 mg/L |
| Allamakee | no limit | 77 | 100% | 4.5 | 99 mg/L |
| Appanoose | no limit | 30 | 100% | 284 | 1,060 mg/L |
| Audubon | no limit | 98 | 100% | 9.25 | 400 mg/L |
| Benton | no limit | 178 | 100% | 53.5 | 230 mg/L |
| Black Hawk | no limit | 260 | 100% | 8.7 | 73 mg/L |
| Boone | no limit | 70 | 100% | 18.5 | 480 mg/L |
| Bremer | no limit | 126 | 100% | 10 | 76 mg/L |
| Buchanan | no limit | 142 | 100% | 7.45 | 138 mg/L |
| Buena Vista | no limit | 177 | 100% | 37 | 250 mg/L |
| Butler | no limit | 157 | 100% | 5.3 | 424 mg/L |
| Calhoun | no limit | 86 | 100% | 89.5 | 490 mg/L |
| Carroll | no limit | 265 | 100% | 11.5 | 400 mg/L |
| Cass | no limit | 88 | 100% | 9.95 | 220 mg/L |
| Adair | no limit | 58 | 100% | 15 | 480 mg/L |
- Estherville township, Emmet County100% detected of 45
- Forest township, Winnebago County100% detected of 34
- Delaware township, Delaware County100% detected of 40
- Remsen township, Plymouth County100% detected of 35
- Waverly, Bremer County100% detected of 30
- Ell township, Hancock County100% detected of 42
- Knoxville township, Marion County100% detected of 30
- Lake Prairie township, Marion County100% detected of 35
- Pleasant township, Hardin County100% detected of 158
- Hardin township, Hardin County100% detected of 38
- Camanche township, Clinton County100% detected of 46
- Clinton, Clinton County100% detected of 43
- Hayes township, Buena Vista County100% detected of 34
- Fruitland township, Muscatine County100% detected of 225
- Morgan township, Harrison County100% detected of 31
- Riverside township, Lyon County100% detected of 33
- Perry township, Buchanan County100% detected of 37
- Valley township, Guthrie County100% detected of 32
- Union township, Cass County100% detected of 36
- Madison township, Lee County100% detected of 31
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.