Iron in Arizona well water
In Arizona, iron was detected in 56% of 12,244 tested private well samples.
Iron is a nuisance rather than a health hazard: rust stains, metallic taste, and clogged fixtures above 300 ug/L. It often occurs with manganese and can feed iron bacteria that foul plumbing.
Check your iron 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 iron
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 iron
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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 iron
Iron and manganese oxidizing filter
whole-house, at the point of entry, about $1,800
Air-injection or greensand media; fixes staining at the source.
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 iron 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 | 718 | 75% | 40 | 130,000 ug/L |
| Navajo | no limit | 690 | 69% | 8 | 147,000 ug/L |
| Coconino | no limit | 596 | 68% | 7.9 | 58,000 ug/L |
| Yuma | no limit | 484 | 63% | 13.3 | 6,250 ug/L |
| Pima | no limit | 1,275 | 62% | 0 | 54,000 ug/L |
| Pinal | no limit | 857 | 59% | 0 | 7,200 ug/L |
| Maricopa | no limit | 2,163 | 55% | 0 | 9,300 ug/L |
| Graham | no limit | 412 | 53% | 4 | 11,400 ug/L |
| Gila | no limit | 977 | 53% | 8 | 3,200,000 ug/L |
| Mohave | no limit | 1,276 | 53% | 3.55 | 35,200 ug/L |
| Santa Cruz | no limit | 161 | 45% | 0 | 750 ug/L |
| Cochise | no limit | 867 | 45% | 0 | 13,900 ug/L |
| Yavapai | no limit | 1,059 | 43% | 0 | 358,000 ug/L |
| Greenlee | no limit | 126 | 40% | 0 | 3,600 ug/L |
| La Paz | no limit | 583 | 39% | 0 | 1,080 ug/L |
- Chinle CCD, Apache County97% detected of 97
- Fort Defiance CCD, Apache County96% detected of 53
- Gila River CCD, Pinal County90% detected of 40
- Kaibab Plateau CCD, Coconino County85% detected of 60
- Winslow-Holbrook CCD, Navajo County84% detected of 95
- Tuba City CCD, Coconino County82% detected of 87
- Snowflake CCD, Navajo County81% detected of 135
- Tohono O'odham Nation CCD, Pima County79% detected of 234
- Tohono O'odham Nation CCD, Pinal County79% detected of 43
- St. Johns CCD, Maricopa County74% detected of 46
- Chandler CCD, Maricopa County73% detected of 102
- St. Johns CCD, Apache County71% detected of 310
- Puerco CCD, Apache County70% detected of 127
- Somerton CCD, Yuma County69% detected of 72
- Bullhead City CCD, Mohave County69% detected of 299
- Florence CCD, Pinal County68% detected of 110
- Piñon CCD, Navajo County67% detected of 123
- Williams CCD, Coconino County65% detected of 54
- Yuma CCD, Yuma County63% detected of 160
- Flagstaff CCD, Coconino County61% detected of 368
Sources
- Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. iron counts and shares are listed on each county and town page with their sources.