Sodium in Delaware well water
In Delaware, sodium was detected in 100% of 2,176 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 Delaware 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 Delaware: 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 |
|---|---|---|---|---|---|
| Kent | no limit | 402 | 100% | 20.1 | 2,160 mg/L |
| New Castle | no limit | 854 | 100% | 18 | 859 mg/L |
| Sussex | no limit | 920 | 100% | 9.04 | 5,500 mg/L |
- Selbyville-Frankford CCD, Sussex County100% detected of 60
- Lewes CCD, Sussex County100% detected of 207
- Georgetown CCD, Sussex County100% detected of 89
- Laurel-Delmar CCD, Sussex County100% detected of 122
- Milford South CCD, Sussex County100% detected of 85
- Seaford CCD, Sussex County100% detected of 114
- Bridgeville-Greenwood CCD, Sussex County100% detected of 64
- Millsboro CCD, Sussex County100% detected of 135
- Milton CCD, Sussex County100% detected of 44
- Middletown-Odessa CCD, New Castle County100% detected of 242
- Piedmont CCD, New Castle County100% detected of 47
- New Castle CCD, New Castle County100% detected of 427
- Red Lion CCD, New Castle County100% detected of 127
- Dover CCD, Kent County100% detected of 98
- Kenton CCD, Kent County100% detected of 39
- Central Kent CCD, Kent County100% detected of 51
- Milford North CCD, Kent County100% detected of 165
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.