43.6%
of Yavapai County samples over the EPA arsenic limit
Yavapai County only
Water Treatment & Plumbing for Yavapai County, Arizona
One owner, one phone number, one county. CreekWell works Yavapai County and nothing else — Prescott to Seligman, Sedona to Black Canyon City — at the same published prices everywhere in it, with the same two-year workmanship warranty.
The county water picture
Yavapai County has the second-worst arsenic record in Arizona
That is not a sales line. A peer-reviewed analysis compiled 33,099 Arizona water samples taken between 1990 and 2017 and found that 20.7% exceeded the EPA’s 10 ppb arsenic limit statewide — but 43.6% of Yavapai County samples did, the second-highest rate of any county in Arizona, behind Pinal. (Jones MC et al., Journal of Contemporary Water Research & Education, 2020;169(1):44–60.) Those are ground and surface water samples from public databases, not a survey of kitchen taps — which is exactly why your own well needs its own test.
Agency findings back it up at street level. In Cornville, six private-well samples collected by residents in 2004 and evaluated by the Arizona Department of Health Services came back every one above the limit, from 15 to 952 µg/L. In Paulden, six of seven samples taken by ADHS in 2005 exceeded it, one at 3,400 µg/L, and ADHS classified three wells as a Public Health Hazard. The U.S. Geological Survey sampled 22 groundwater sites in the Big Chino Subbasin between 2011 and 2018 and found 13 of them above the standard (SIR 2020–5094) — nearly every well in the deep carbonate aquifer (median 37 µg/L), against a median of 4.3 µg/L in the shallower basin-fill.
For most wells the cause is geology, not industry. Granite, basalt and limestone bedrock combined with a deep, slow-moving aquifer means county groundwater picks up an unusually heavy mineral load on the way to your tap. There is no upstream fix and no remediation — treatment happens at the house. The exception is Dewey-Humboldt, where the Iron King Mine – Humboldt Smelter Superfund site is under an EPA cleanup plan and ADEQ encourages well owners near it to test.
Hardness follows the same pattern. Prescott city water is moderately hard at 75–130 ppm (4.3–7.6 grains per gallon) per the city’s own water quality report, drawn from seven wells in the Lower Volcanic Unit of the Little Chino Sub-Basin. In our own field testing, private wells across the county routinely come back at three to five times that — 22 to 32+ grains per gallon.
952 µg/L
highest arsenic in the Cornville wells ADHS reviewed
22–32+
grains per gallon we typically measure on a county private well
1 rate
the same published prices in every town in the county
Every town we cover
Yavapai County, community by community
Each town has its own water chemistry. Pick yours for the specifics — the aquifer, what the local utility publishes, and what we actually see in homes there.
Prescott
City water 4.3–7.6 gpg; seven wells in the Little Chino aquifer
Prescott Valley
Town water on two systems, about 7.2 and 9.6 gpg; wells beyond the town
Chino Valley
Town wells in the Little Chino sub-basin; hardness not published
Paulden
Highest documented well arsenic in the county; Big Chino wells
Dewey-Humboldt
Iron King Mine – Humboldt Smelter Superfund site; test your well
Mayer
District water; separate water companies in Spring Valley and Cordes Lakes; Big Bug Creek wells
Kirkland & Skull Valley
Bill Williams basin; every home on a well
Congress & Yarnell
Weaver Mountains granite; very hard well water
Bagdad
Company town, mineralized bedrock, hard water
Seligman & Ash Fork
Stored and hauled water, cisterns, UV
Black Canyon City
Agua Fria corridor; district arsenic treatment
Sedona
Yavapai County side. Arizona Water Company wells; arsenic 4.1–8.4 ppb in 2025
Cottonwood
With Cornville, Clarkdale and Jerome; hardness not published by the utility
Verde Valley
Camp Verde, Rimrock and Lake Montezuma
Why one county only
We know these aquifers
Little Chino, Big Chino, Verde Valley, Bill Williams, Agua Fria. A softener sized for Prescott city water is the wrong machine for a Paulden well, and knowing that before the truck rolls saves you money.
One flat rate, no trip fees
Prescott, Bagdad, Seligman, Black Canyon City — the installed price is the same. We do not price by distance inside the county, and we do not pad an arrival time to win a call. The far towns are scheduled as planned visits.
Test first, sell second
Nothing gets sized without lab numbers. We read your report with you free, and if the test comes back clean we tell you that and you buy nothing.
Where the numbers come from
Sources
- Jones MC, Credo JM, Ingram JC, Baldwin JA, Trotter RT Jr, Propper CR. “Arsenic Concentrations in Ground and Surface Waters across Arizona Including Native Lands.” Journal of Contemporary Water Research & Education, 2020;169(1):44–60.
- Arizona Department of Health Services / ATSDR. Health Consultation: Arsenic in Private Drinking Water Wells, Cornville, Yavapai County, Arizona, June 15, 2004.
- Arizona Department of Health Services / ATSDR. Health Consultation: Evaluation of Metals in Private Drinking Water Wells, Paulden, Yavapai County, Arizona, June 13, 2006 (Paulden area sampling, July 2005).
- U.S. Geological Survey. Beisner KR, Jones CJR. Geochemical Assessment of Groundwater in the Big Chino Subbasin, Arizona, 2011–18. Scientific Investigations Report 2020–5094.
- City of Prescott. Annual Drinking Water Quality & Consumer Confidence Report, reporting year 2024.
- Arizona Department of Environmental Quality. Iron King Mine – Humboldt Smelter Superfund Site; and U.S. EPA, Record of Decision announcement, October 24, 2023.
- Arizona Water Company. Sedona Consumer Confidence Report, 2025.
Each link was checked on 23 September 2026. The utility reports behind each town’s own figures are linked on that town’s page.
Service status — September 2026
Rebranding, and adding licenses
Aqua Cat Plumbing & Water Treatment is now CreekWell Plumbing & Water Treatment. Same owner, same phone number.
We are adding Arizona contractor licenses, and we are not booking new work until that is done. New work restarts the first week of November. Jobs already on the schedule are not affected.
For new work, request a November visit or call or text 928-228-5770. Bookings go in the order they come in, at the prices published on this site. No deposit.
Straight answers
Questions we get asked
Can you come out right now?
Not for new work. We are rebranding and adding Arizona contractor licenses. New work restarts the first week of November, once the licenses are issued. Jobs already on the schedule are not affected.
Leave your name on the list or call or text 928-228-5770. Bookings go in the order they come in, at the prices published on this site, with no deposit.
Are private wells regulated in Arizona?
No.
Private wells are not covered by the Safe Drinking Water Act and are not tested, treated or monitored by the EPA or the State of Arizona. Nobody will call you when something changes. In a county where 43.6% of samples exceed the arsenic limit, that makes annual testing the baseline, not a precaution.
Do I need a water test before buying equipment?
Yes, and we will not size a system without one.
Free in-home checks measure hardness, chlorine and TDS — useful, but they cannot detect arsenic, and arsenic is the contaminant that actually matters here. The $185 Premium Water Test is SimpleLab’s certified panel covering 53 parameters including arsenic, lead, uranium, nitrate and bacteria. You order it directly from the lab; we read the results with you free, whether or not you buy anything.
Does the price change depending on which town I am in?
No.
Water treatment and plumbing prices are identical everywhere in Yavapai County. Prescott, Seligman, Bagdad, Black Canyon City — same number, no trip fee, no travel charge. On a whole-house system the value carries the travel.
Is Prescott city water hard?
Moderately.
The City of Prescott’s own water quality report puts it at 75 to 130 ppm, which is 4.3 to 7.6 grains per gallon, drawn from seven production wells in the Lower Volcanic Unit of the Little Chino Sub-Basin. That crosses the USGS “hard” threshold of about 7 gpg at the top end. Private wells in the county are a different story — in our field testing, 22 to 32+ grains per gallon is common.
How bad is arsenic in Yavapai County water?
By share of samples over the limit, it is the second-worst county in Arizona.
A peer-reviewed analysis of 33,099 Arizona water samples collected between 1990 and 2017 (Jones et al., Journal of Contemporary Water Research & Education, 2020) found 43.6% of Yavapai County samples above the EPA’s 10 ppb arsenic limit, against a statewide rate of 20.7%. In Cornville, six private-well samples evaluated by the Arizona Department of Health Services in 2004 were all above the limit, from 15 to 952 micrograms per liter, and in Paulden six of seven samples were above it, one at 3,400. Arsenic here is mostly geological — it leaches from the volcanic and granitic bedrock.
Do you work outside Yavapai County?
No. CreekWell works Yavapai County only.
That is a deliberate choice — it means we know the aquifers, the water chemistry and the building stock here rather than spreading thin across the state. If you are outside the county, we will tell you straight on the phone and point you somewhere useful.
The list
Request a November visit in the first round of appointments
New work restarts the first week of November, once we finish rebranding and the contractor licenses are issued. Jobs already scheduled are not affected.