Sodium in Tennessee well water
In Tennessee, sodium was detected in 100% of 3,134 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 Tennessee 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 Tennessee: 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 |
|---|---|---|---|---|---|
| Williamson | no limit | 59 | 100% | 4.4 | 350 mg/L |
| Coffee | no limit | 261 | 100% | 1.7 | 3,100 mg/L |
| Crockett | no limit | 32 | 100% | 7.85 | 65 mg/L |
| Dyer | no limit | 43 | 100% | 6.2 | 41 mg/L |
| Fayette | no limit | 46 | 100% | 6 | 165 mg/L |
| Franklin | no limit | 94 | 100% | 1.5 | 510 mg/L |
| Gibson | no limit | 46 | 100% | 6.9 | 54.5 mg/L |
| Grainger | no limit | 40 | 100% | 1.9 | 190 mg/L |
| Hamilton | no limit | 80 | 100% | 1.4 | 24 mg/L |
| Hardeman | no limit | 46 | 100% | 5.23 | 59.7 mg/L |
| Henry | no limit | 64 | 100% | 4.5 | 1,500 mg/L |
| Humphreys | no limit | 34 | 100% | 66 | 7,800 mg/L |
| Lauderdale | no limit | 59 | 100% | 7.5 | 20 mg/L |
| Lincoln | no limit | 37 | 100% | 4.03 | 3,000 mg/L |
| Carroll | no limit | 49 | 100% | 4.1 | 33 mg/L |
- District 1, Shelby County100% detected of 102
- District 5, Shelby County100% detected of 94
- District 11, Shelby County100% detected of 132
- District 4, Shelby County100% detected of 99
- District 6, Shelby County100% detected of 196
- District 10, Shelby County100% detected of 72
- District 13, Shelby County100% detected of 71
- District 2, Shelby County100% detected of 47
- District 7, Shelby County100% detected of 124
- District 9, Shelby County100% detected of 77
- District 1, Hamilton County100% detected of 43
- District 14, Coffee County100% detected of 72
- District 6, Coffee County100% detected of 68
- District 5, Coffee County100% detected of 77
- District 6, Marshall County100% detected of 39
- District 4, Roane County100% detected of 44
- District 7, Madison County100% detected of 65
- District 6, Franklin County100% detected of 80
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.