Pool Acid Wash & Restoration FAQ

Standard residential pools run $400–$800. Larger and luxury Scottsdale and Paradise Valley pools with big plaster or pebble surfaces, or heavy staining, run $700–$1,200 or more. The two drivers are pool size and how bad the staining is. Send photos for a flat quote.

Roughly every 3–5 years for most Scottsdale pools. On hard water with light brushing, some pools need it sooner; a well-maintained pebble pool can go longer. Because each wash removes a thin plaster layer, it shouldn't be done more often than the surface actually needs.

It depends on the plaster's thickness and age, but a typical plaster surface can handle a handful of acid washes over its life, not unlimited. Each wash removes a paper-thin layer. Once the plaster is thin, mottled, or showing exposed aggregate, resurfacing is the right call, and an honest pro will tell you when you're there.

Yes. A true acid wash requires the pool fully drained so the bare plaster can be worked in sections. There are no-drain acid treatments for tile and mild staining, but a full surface acid wash means draining the pool.

Per City of Scottsdale rules, pool water goes to the sewer clean-out on your property (drained slowly, under 12 gallons a minute per the city, so it doesn't back up the line) or is used to irrigate your own landscaping if the chemistry is safe. It must never go to the street, alley, storm drain, a sewer manhole in the street, or a neighbor's property. Ask whoever drains your pool where the hose is going.

Draining a full pool takes several hours to overnight depending on size and drain rate. The acid wash itself is usually a day of work; the chlorine bath and refill add time. From empty to swimmable you're often looking at 2–4 days, largely driven by how long the refill takes.

Yes. Green, black, and swamp-water pools are one of the most common problems, especially at vacant homes, rentals, and snowbird properties. Depending on severity the fix is a drain-and-clean or a full acid wash. Most green pools are clear blue again within a day or two of work plus refill time.

That's calcium scale, and Scottsdale's very hard water (roughly 13 to 19 grains per gallon) makes it almost unavoidable at the waterline. It comes off with bead blasting for heavy buildup or acid treatment for lighter scale. See the calcium and scale removal and tile cleaning pages.

Not when it's done right. Pebble finishes need a lighter, more careful acid touch than standard plaster, and a careful crew works them in sections without over-etching. The wrong approach can dull a pebble surface, which is exactly why you should ask any crew how it treats premium finishes.

Yes. Scottsdale is the center of the service area, which also takes in Paradise Valley estate pools, Fountain Hills hillside and golf-community pools, older Tempe rental pools, and Cave Creek custom and well-water properties.

Yes. The refill is city water on your meter, and nobody should mark it up. A typical residential pool holds 10,000–25,000 gallons and estate pools much more, so plan for a bump on that billing cycle. Ask for the rough gallons up front.

Not in moderation. A properly done acid wash every few years is a normal part of pool ownership. The harm comes from doing it too often or too aggressively, which strips plaster prematurely. Only do it when the surface actually needs it.

If the plaster is structurally sound and just stained or scaled, acid wash. It's a fraction of the cost. If the plaster is thin, blotchy, or showing exposed aggregate, resurface. Photos usually let an honest pro say which one your pool needs rather than defaulting to the pricier job.

Fall through early spring is ideal, and spring is peak season as people open pools for summer. Acid washing works best in cooler conditions so the plaster doesn't dry too fast, and you avoid leaving the surface exposed to intense summer sun for long. That said, green-pool rescues happen year-round, especially in summer.

We don't advertise credentials. Draining, acid washing, calcium removal, and resurfacing prep are real jobs, so ask any crew, us included, for its license and insurance certificate before the pool is drained.

Send photos of the whole pool, the waterline tile, and any bad staining, plus rough dimensions if you have them. We reply with a flat, up-front price for most jobs, no on-site sales visit needed. Get a fast quote through the form.

Vet three things before you hire anyone. First, confirm the crew is licensed and insured (ask us too), draining 20,000 gallons and handling muriatic acid is not a job for a classifieds handyman. Second, get the price flat and in writing from photos; open-ended hourly jobs grow. Third, ask how they treat pebble and quartz differently from plain plaster, and where your drain water will go, anyone who works Scottsdale regularly can answer both without hesitating.

Almost certainly. We cover the whole city (the older plaster pools around Old Town and South Scottsdale, McCormick Ranch and Gainey Ranch in the middle, and north-side communities like DC Ranch, Grayhawk, and Troon) plus Paradise Valley, Fountain Hills, Tempe, and Cave Creek. Include your cross streets with the photos so we can confirm a schedule window.

Relatively speaking, yes. Even at the $700–$1,200+ estate end of the range, a wash costs a fraction of the five-figure pebble resurface it postpones. The math only breaks down when the plaster is too thin to take another wash, at that point the wash is wasted money, and a straight pro will say so instead of quoting one.

Often you can get one quickly. We look at your photos directly, and there's no sales visit to schedule for most jobs. On-site work books by season, spring fills fastest as pools open for summer, so a planned wash is worth locking in a few weeks ahead.