Sodium in Connecticut well water
In Connecticut, sodium was detected in 100% of 1,655 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 Connecticut 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 Connecticut: 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 |
|---|---|---|---|---|---|
| Capitol | no limit | 562 | 100% | 12 | 480 mg/L |
| Greater Bridgeport | no limit | 45 | 100% | 7.5 | 75 mg/L |
| Lower Connecticut River Valley | no limit | 113 | 100% | 8.8 | 450 mg/L |
| Naugatuck Valley | no limit | 221 | 100% | 11.1 | 465 mg/L |
| Northeastern Connecticut | no limit | 152 | 100% | 5.85 | 50 mg/L |
| Northwest Hills | no limit | 92 | 100% | 5.85 | 37 mg/L |
| South Central Connecticut | no limit | 66 | 100% | 14 | 130 mg/L |
| Southeastern Connecticut | no limit | 229 | 100% | 14 | 1,590 mg/L |
| Western Connecticut | no limit | 175 | 100% | 8.7 | 848 mg/L |
- Wilton, Western Connecticut Planning Region100% detected of 64
- East Lyme, Southeastern Connecticut Planning Region100% detected of 99
- Manchester, Capitol Planning Region100% detected of 143
- Avon, Capitol Planning Region100% detected of 35
- Farmington, Capitol Planning Region100% detected of 36
- Simsbury, Capitol Planning Region100% detected of 34
- Granby, Capitol Planning Region100% detected of 32
- Woodbury, Naugatuck Valley Planning Region100% detected of 137
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.