Under-sink reverse osmosis, installed from $829

Yes, for repairs and emergencies under $1,000.

Call or text 928-228-5770, Monday to Saturday, 7am to 7pm; a priority call gets a same-day visit when Neil is free. Whole-house systems wait for the contractor licenses (what the licenses change).

$829 for the Kitten, a 5-stage system, and $999 for the Ocelot, a 6-stage system with alkaline remineralization — installed, flat.

Flat rate, including the system, the installation and a faucet hole if your counter needs one (drilling granite, quartz or stainless is a $50 line). No trip fee anywhere in Yavapai County. Whole-home reverse osmosis is the Lion Package at $14,999.99 flat anywhere in Yavapai County — an AdvanTech Aqua AES-2000 making about 2,000 gallons a day, a storage tank sized to your doorways, the delivery pump and first-year maintenance included, with a softener ahead of it usually needed and priced separately — a reference price until the contractor licenses are issued. On a well, the system is sized from a $185 lab water test.

The Ocelot adds a sixth stage — alkaline remineralization after the membrane — for $170 more.

They’re the same Charger HydroSplash platform: the 75 GPD twist-off membrane, the same tank, the same faucet and the same 1:1 membrane rating, with the faucet and a counter hole included (drilling granite, quartz or stainless is a $50 line). RO water is extremely pure, which also makes it slightly acidic and flat-tasting to some palates. The Ocelot adds Charger’s alkaline cartridge, which Charger says returns minerals to the water; Charger does not publish its media or the pH it reaches, and CreekWell found no certification for this cartridge. If you prefer water with some minerals put back, that’s the Ocelot at $999. If you just want clean, great-tasting water at the best price, the Kitten at $829 is the workhorse.

It removes arsenic V well and arsenic III poorly (Charger’s manual), so it is an effective point-of-use method when the arsenic is arsenic V.

A standard lab panel reports total arsenic, not the form; Charger says a special sampling method is needed to tell them apart. In Charger’s lab test of an earlier model (CWISO475PA), the HydroSplash took pentavalent arsenic from 0.30 mg/L down to 0.010 mg/L or less. Installed for arsenic, Charger’s manual says to replace the membrane every 12 months, or sooner if a test of the RO water shows arsenic above 10 ppb, and to test the RO water to check it is working. For a well over the 10 µg/L EPA limit, RO at the drinking tap is a common, affordable answer, for arsenic V up to 300 ppb (Charger’s rating) on water with iron up to 0.3 ppm and manganese up to 0.1 ppm; above those, the treatment ahead of it is whole-house work, which waits for the licenses.

It reduces arsenic V and most PFAS well — which is why it is a common first answer for a well’s drinking water. This unit is not certified, so a test of the RO water shows your result.

Reverse osmosis is one of the most effective methods for arsenic V, PFAS, lead and nitrate. In Charger’s lab test of an earlier model (CWISO475PA), 99% of pentavalent arsenic was removed on average; arsenic III is removed poorly unless it is converted first. EPA says RO membranes are typically more than 90 percent effective at removing a wide range of PFAS, including shorter-chain PFAS. For arsenic at every tap, see arsenic removal.

Some people find it does, because the dissolved minerals that carry flavor are gone.

That is what the 6-stage build is for: Charger says its alkaline cartridge returns minerals to the water after the membrane (it does not publish the media or the pH it reaches). If you prefer the taste of water with minerals in it, it is the extra $170.

Yes, a small dedicated faucet at the sink.

A faucet hole is included; drilling granite, quartz or stainless is a $50 line.

If your sink or counter already has a spare hole — a soap dispenser or an unused sprayer — Neil uses that. Granite, quartz and stainless are no problem; the price list carries a $50 line for drilling those, and your written estimate says whether it applies. An Ocelot on a granite, quartz or stainless counter with no spare hole waits for CreekWell’s contractor licenses; a Kitten does not.

The four sediment and carbon cartridges every 6–12 months (Charger’s manual says once a year), and the membrane about every 3 years. Each cartridge change takes about a minute.

• When: the four cartridges every 6–12 months (sooner if your water has more than 1 ppm chlorine, which the free water check measures), and the membrane about every 3 years, or every 12 months if the system is there for arsenic. A rising reading at the RO tap, checked once a year, says the membrane is finishing.
• How: the cartridges twist off by hand, about a minute each, with a shallow pan underneath. No tools.
• Who, and the cost: order a filter set by phone or text (see the replacement filter sets on this page) and do it yourself, or have Neil change it: the filter set plus his $179 filter-change visit.

About a gallon or more to the drain for each gallon it makes.

Charger rates the HydroSplash membrane 1:1, about 1 gallon to the drain for each gallon made, but that is a membrane rating: EPA notes a storage tank’s back pressure makes a real system less efficient than its rating. EPA says a typical under-sink RO sends five gallons or more down the drain for each gallon made, and one with the WaterSense label 2.3 gallons or less; Charger makes no WaterSense claim for this unit. The drain line runs to your home’s wastewater. What that water costs depends on how much RO water you use and your water rate.

Yes — coffee, tea, soups and rice all taste better without chlorine or hardness in them.

A line from the under-sink unit to a refrigerator’s ice maker or water dispenser is not in the package price; Neil prices it on site. On the same visit it counts toward the $1,000 limit on the whole job. Whole-home RO covers every tap, but it is overkill if your only goal is drinking and cooking water — see whole-home reverse osmosis if you want it anyway.

Yes — as long as the water going in is microbiologically safe.

RO removes many dissolved contaminants: in Charger’s lab test of an earlier model (CWISO475PA), 99% of pentavalent arsenic, 96.8% of lead and 93.8% of fluoride on average. It is not a disinfection device, so a well is tested for bacteria first. RO does remove calcium and magnesium, but the World Health Organization puts drinking water’s typical share of those at 5–20% of what people take in — food supplies the rest. Charger says the 6-stage Ocelot’s alkaline cartridge returns some minerals; it does not say which.

CreekWell — Neil installs under-sink RO himself, anywhere in Yavapai County.

Prescott, Prescott Valley, Chino Valley, Dewey-Humboldt, Mayer, Paulden, Sedona, Cottonwood and the rest of Yavapai County. A standard under-sink install takes about two hours, including the faucet and the drain saddle, and you get the owner doing the work rather than a subcontracted installer. RO is among the most thorough options for drinking water: Charger’s manual says it removes arsenic V very well, and EPA says RO membranes are typically more than 90 percent effective on a wide range of PFAS. This unit is not certified, so a test of the RO water shows your result. It does not soften the water in the rest of the house, so homes with hard Yavapai County water often pair RO at the kitchen sink with a whole-home softener.

Yes. Installing an under-sink RO you bought, any brand, is $499 flat.

That includes its faucet with a new faucet hole if needed on any counter, and a refrigerator or ice-maker line where that connection is under the sink; a new line to the fridge is priced on site. It can be booked now when what you paid for the system plus the $499 comes to under $1,000 — a system that cost $500 or less — and the job needs no permit; anything added to the visit, a new fridge line for example, counts toward the same $1,000. A Waterdrop G3P800 at Waterdrop’s own price ($849 on 3 October 2026) comes to more, so that one waits for the contractor licenses. A tankless unit with a pump needs a working outlet under the sink. CreekWell is independent of Waterdrop: not affiliated with, authorized by or endorsed by it.

Yes: the Moen F9900 with the Moen Sip faucet, supplied and installed, is $1,187.

That is a reference price: it is over $1,000, so it is installed once CreekWell’s contractor licenses are issued. Moen’s spec sheet rates the F9900 at 27.5 gallons a day with a 3.2-gallon tank, and Moen’s documents show no pump or power connection. The Kitten, $829, can be booked now if your water is inside its limits and the job needs no permit.

Yes.

The filter set is $100 shipped to any Arizona address, or $200 with the alkaline cartridge; both prices include sales tax and shipping.

Call or text Neil at 928-228-5770 to order; ordering online is not switched on yet. The set ships by USPS to an Arizona address. If you would rather Neil put them in, fitting a set you already have is $179 for the visit, plus the set.