Chloride in Connecticut well water
In Connecticut, chloride was detected in 100% of 2,541 tested private well samples.
Chloride mainly comes from road salt and water softener discharge. Above 250 mg/L water tastes salty and corrodes plumbing. Rising chloride in a well usually means road salt is reaching the aquifer.
Check your chloride 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 chloride
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 chloride
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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 chloride
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 chloride 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 |
|---|---|---|---|---|---|
| Western Connecticut | no limit | 253 | 100% | 13 | 1,700 mg/L |
| Greater Bridgeport | no limit | 45 | 100% | 12 | 130 mg/L |
| Lower Connecticut River Valley | no limit | 145 | 100% | 9 | 730 mg/L |
| Naugatuck Valley | no limit | 347 | 100% | 17.6 | 2,500 mg/L |
| Northeastern Connecticut | no limit | 81 | 100% | 7.2 | 197 mg/L |
| Northwest Hills | no limit | 177 | 100% | 5.41 | 98 mg/L |
| South Central Connecticut | no limit | 416 | 100% | 54 | 8,300 mg/L |
| Southeastern Connecticut | no limit | 276 | 100% | 19 | 3,620 mg/L |
| Capitol | no limit | 801 | 100% | 14 | 1,100 mg/L |
- Wilton, Western Connecticut Planning Region100% detected of 67
- Newtown, Western Connecticut Planning Region100% detected of 48
- New Haven, South Central Connecticut Planning Region100% detected of 269
- East Lyme, Southeastern Connecticut Planning Region100% detected of 101
- Vernon, Capitol Planning Region100% detected of 43
- Manchester, Capitol Planning Region100% detected of 152
- Southington, Capitol Planning Region100% detected of 39
- Avon, Capitol Planning Region100% detected of 38
- Farmington, Capitol Planning Region100% detected of 66
- Simsbury, Capitol Planning Region100% detected of 76
- Ellington, Capitol Planning Region100% detected of 38
- Granby, Capitol Planning Region100% detected of 40
- Southbury, Naugatuck Valley Planning Region100% detected of 39
- Waterbury, Naugatuck Valley Planning Region100% detected of 33
- Woodbury, Naugatuck Valley Planning Region100% detected of 151
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. chloride counts and shares are listed on each county and town page with their sources.