Chloride in Delaware well water
In Delaware, chloride was detected in 100% of 2,339 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 Delaware 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 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 |
|---|---|---|---|---|---|
| New Castle | no limit | 883 | 100% | 26 | 70,300 mg/L |
| Kent | no limit | 407 | 100% | 24 | 42,600 mg/L |
| Sussex | no limit | 1,049 | 99% | 15 | 9,500 mg/L |
- Milford North CCD, Kent County100% detected of 164
- Lewes CCD, Sussex County100% detected of 275
- Georgetown CCD, Sussex County100% detected of 90
- Kenton CCD, Kent County100% detected of 39
- Selbyville-Frankford CCD, Sussex County100% detected of 115
- Milford South CCD, Sussex County100% detected of 79
- Seaford CCD, Sussex County100% detected of 117
- Bridgeville-Greenwood CCD, Sussex County100% detected of 66
- Millsboro CCD, Sussex County100% detected of 140
- Milton CCD, Sussex County100% detected of 45
- Middletown-Odessa CCD, New Castle County100% detected of 257
- Piedmont CCD, New Castle County100% detected of 46
- New Castle CCD, New Castle County100% detected of 435
- Red Lion CCD, New Castle County100% detected of 123
- Dover CCD, Kent County100% detected of 105
- Central Kent CCD, Kent County98% detected of 50
- Laurel-Delmar CCD, Sussex County94% detected of 122
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.