Arsenic in Utah well water

In Utah, 19% of 5,542 tested private well samples exceeded the EPA limit for arsenic (10 ug/L).

Arsenic occurs naturally in New England bedrock and dissolves into well water. Long-term exposure raises the risk of bladder, lung and skin cancers, and is linked to heart disease and lower IQ in children. It has no taste or smell, so testing is the only way to know.

Check your arsenic 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 Utah well for arsenic

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 $209 Already tested? Upload the report

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Systems that remove arsenic

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For arsenic

Under-sink reverse osmosis system

under-sink or countertop, about $300

Look for NSF/ANSI 58 certification listing the contaminant you need removed.

For arsenic

Whole-house arsenic and uranium filter

whole-house, at the point of entry, about $2,500

Adsorptive iron-based media; sized to your well yield.

For arsenic

Aquasana SmartFlow reverse osmosis

under-sink or countertop, about $225

Certified to NSF/ANSI 58 and 53 to reduce arsenic (96%, pentavalent), fluoride (90%), lead (99%), nitrate, nitrite and PFOA/PFOS at the kitchen tap, with a remineralizer.

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 arsenic in Utah: certified labs, state programs and prices.

By county, from individual samples

Public monitoring samples against the EPA limit (10 ug/L); counties with at least 30 samples.

County	Above EPA limit	Samples	Detected	Median	Highest
Washington	41%	434	99%	8.9	100 ug/L
Davis	36%	45	82%	1	44 ug/L
Millard	34%	525	92%	5	904 ug/L
Wayne	24%	58	86%	2.55	41.5 ug/L
Weber	24%	80	53%	1.3	65 ug/L
Salt Lake	23%	940	74%	3.8	3,770 ug/L
Iron	23%	327	83%	3.7	99.4 ug/L
Uintah	23%	349	74%	2	1,200 ug/L
San Juan	21%	270	65%	0.94	86 ug/L
Emery	18%	39	77%	1	218 ug/L
Cache	17%	98	84%	1.25	57.8 ug/L
Tooele	15%	590	71%	1.2	350 ug/L
Beaver	13%	321	57%	2.4	150 ug/L
Juab	12%	91	76%	0.68	470 ug/L
Wasatch	9%	273	66%	1.1	27.7 ug/L

St. George CCD, Washington County58% of 64
Delta CCD, Millard County54% of 260
Magna CCD, Salt Lake County39% of 304
Hurricane CCD, Washington County38% of 364
Beryl-Newcastle CCD, Iron County34% of 97
Dugway-Wendover CCD, Tooele County29% of 97
Hanksville CCD, Wayne County28% of 32
Salt Lake City CCD, Salt Lake County25% of 367
Garrison-Sevier Lake CCD, Millard County24% of 90
Uintah and Ouray CCD, Uintah County24% of 327
Blanding CCD, San Juan County23% of 195
Rush Valley CCD, Tooele County22% of 110
Cedar City CCD, Iron County22% of 162
Northwest Weber CCD, Weber County19% of 57
Goshen CCD, Utah County19% of 48
Heber City West CCD, Wasatch County17% of 123
Milford-Minersville CCD, Beaver County13% of 302
Parowan CCD, Iron County10% of 68
Tooele-Grantsville CCD, Tooele County10% of 383
Fillmore CCD, Millard County10% of 175

Sources

Individual samples from the USGS Water Quality Portal and state monitoring, summarized per geography. arsenic counts and shares are listed on each county and town page with their sources.

Analysis: Arsenic in private wells, state by state, from the same public records.