Sodium in North Dakota well water
In North Dakota, sodium was detected in 100% of 15,514 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 North Dakota 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 North 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 |
|---|---|---|---|---|---|
| Traill | no limit | 87 | 100% | 275 | 2,570 mg/L |
| McKenzie | no limit | 251 | 100% | 490 | 88,100 mg/L |
| Pierce | no limit | 131 | 100% | 107 | 3,780 mg/L |
| Richland | no limit | 180 | 100% | 44.5 | 1,390 mg/L |
| Williams | no limit | 284 | 100% | 293 | 52,000 mg/L |
| Walsh | no limit | 144 | 100% | 304 | 7,600 mg/L |
| Pembina | no limit | 118 | 100% | 52 | 16,700 mg/L |
| Sioux | no limit | 120 | 100% | 468 | 905 mg/L |
| Wells | no limit | 108 | 100% | 203 | 1,240 mg/L |
| Ramsey | no limit | 385 | 100% | 190 | 2,000 mg/L |
| Morton | no limit | 409 | 100% | 530 | 2,000 mg/L |
| McLean | no limit | 415 | 100% | 210 | 27,700 mg/L |
| Billings | no limit | 180 | 100% | 440 | 1,900 mg/L |
| Grand Forks | no limit | 111 | 100% | 69 | 3,390 mg/L |
| Cass | no limit | 264 | 100% | 213 | 2,000 mg/L |
- Central McKenzie UT, McKenzie County100% detected of 44
- North McKenzie UT, McKenzie County100% detected of 40
- Southwest McKenzie UT, McKenzie County100% detected of 41
- North Pierce UT, Pierce County100% detected of 45
- Dwight township, Richland County100% detected of 30
- Farmvale township, Williams County100% detected of 33
- Hofflund township, Williams County100% detected of 37
- Vernon township, Walsh County100% detected of 36
- North Sioux UT, Sioux County100% detected of 33
- Southwest Sioux UT, Sioux County100% detected of 56
- Creel township, Ramsey County100% detected of 83
- Odessa township, Ramsey County100% detected of 112
- East Morton UT, Morton County100% detected of 167
- Mandan UT, Morton County100% detected of 55
- West Morton UT, Morton County100% detected of 165
- East McLean UT, McLean County100% detected of 71
- North Central McLean UT, McLean County100% detected of 32
- South McLean UT, McLean County100% detected of 79
- North Billings UT, Billings County100% detected of 97
- West Fargo, Cass County100% detected of 85
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.