Chloride in Arizona well water
In Arizona, chloride was detected in 100% of 24,358 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 Arizona 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 Arizona: 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 |
|---|---|---|---|---|---|
| Apache | no limit | 1,064 | 100% | 32 | 51,000 mg/L |
| Greenlee | no limit | 144 | 100% | 17 | 1,800 mg/L |
| Santa Cruz | no limit | 227 | 100% | 12 | 160 mg/L |
| Yuma | no limit | 2,418 | 100% | 655 | 12,000 mg/L |
| Maricopa | no limit | 8,920 | 100% | 362 | 190,000 mg/L |
| Pinal | no limit | 1,780 | 100% | 75 | 10,400 mg/L |
| Cochise | no limit | 1,752 | 100% | 12 | 40,500 mg/L |
| Mohave | no limit | 1,342 | 100% | 75.8 | 4,080 mg/L |
| Navajo | no limit | 1,080 | 100% | 12 | 10,000 mg/L |
| Graham | no limit | 597 | 100% | 150 | 6,800 mg/L |
| Coconino | no limit | 876 | 100% | 20 | 63,400 mg/L |
| Gila | no limit | 984 | 99% | 52.3 | 877 mg/L |
| Yavapai | no limit | 1,228 | 99% | 23 | 3,530 mg/L |
| Pima | no limit | 1,946 | 99% | 18 | 2,110 mg/L |
- Mingus Mountain CCD, Yavapai County100% detected of 132
- Safford CCD, Graham County100% detected of 265
- Ash Fork CCD, Yavapai County100% detected of 94
- North Mohave CCD, Mohave County100% detected of 159
- Puerco CCD, Apache County100% detected of 145
- Fort Defiance CCD, Apache County100% detected of 183
- Lake Havasu City CCD, Mohave County100% detected of 297
- St. Johns CCD, Maricopa County100% detected of 81
- Chandler CCD, Maricopa County100% detected of 500
- Wickenburg CCD, Maricopa County100% detected of 291
- Buckeye CCD, Maricopa County100% detected of 747
- Kingman CCD, Mohave County100% detected of 481
- Tonto Basin CCD, Gila County100% detected of 81
- Deer Valley CCD, Maricopa County100% detected of 137
- Eagar-Springerville CCD, Apache County100% detected of 101
- Dennehotso CCD, Apache County100% detected of 32
- Sweetwater CCD, Apache County100% detected of 66
- Chinle CCD, Apache County100% detected of 191
- St. Johns CCD, Apache County100% detected of 346
- Pima CCD, Graham County100% detected of 212
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.