Pool Acid Wash in Chandler, AZ

A pool acid wash in Chandler restores a stained, dull, or algae-green plaster pool to fresh white surface — by draining it, washing the bare plaster with a diluted muriatic acid solution, neutralizing, running a chlorine bath, and refilling. It typically costs $300–$800, or $700–$1,200+ for larger luxury pools. It’s the single most cost-effective way to make an old pool look new without resurfacing.

What an acid wash is (and isn’t)

An acid wash is a periodic restoration, done every few years — not weekly cleaning and not a chemical shock. It’s for a pool that brushing and chemicals can’t fix anymore: years of calcium scale, iron and organic staining, mottled plaster, or a full green algae bloom.

Here’s the mechanism. With the pool drained to bare plaster, we apply a controlled acid-and-water solution. The acid eats through surface stains and calcium and takes off a thin top layer of old, discolored plaster — exposing the clean white surface underneath. That’s why it works so well and also why it can’t be done indefinitely: there’s only so much plaster to remove.

Our process, step by step

1. Free photo quote. You send a photo of the whole pool, a close-up of the worst staining, and the waterline tile. We come back with a flat price.
2. Draining, done legally. The City of Chandler requires pool water to discharge to your sanitary sewer cleanout — the black 3–4 inch capped pipe near the house — at no more than 12 gallons per minute, or onto your own landscaping. Draining to the street storm drain is prohibited without a city exception. Draining a residential pool takes several hours.
3. Protect the plaster. We keep the surface wet and work in sections, in the cooler part of the day, so it never dries out and etches unevenly. This is the step generalists skip and it’s where surfaces get ruined.
4. Acid wash. We apply the diluted muriatic solution (commonly around 1:1 to 1:4 acid-to-water depending on the surface and staining), scrub, and rinse each section.
5. Neutralize and dispose. We neutralize the acidic runoff with soda ash and pump the waste out responsibly — not into the street.
6. Chlorine bath and refill. A chlorine bath sanitizes the fresh surface, then we start the refill from the hose.
7. Rebalance. Once it’s full we get the chemistry — pH, alkalinity, calcium hardness, chlorine — back into range so the surface is protected and the water’s swimmable.

Why Chandler pools stain and scale in the first place

Chandler’s tap water is hard, loaded with dissolved minerals. In the desert heat, pool water evaporates constantly and the calcium left behind concentrates and cements onto the plaster and waterline tile. That’s the white crust you see. On top of that, the intense sun bakes in sunscreen, leaves, and organic stains, and metals like iron and copper (from fill water or old plumbing) leave brown and green streaks. Acid washing takes all of it off at once.

Pools in older central Chandler — 1970s and 80s plaster off Arizona Avenue, Alma School, and Dobson — tend to be on the thinner side and closer to needing a resurface. Newer pebble and quartz pools in Ocotillo, Fulton Ranch, and Clemente Ranch hold up longer but collect calcium at the tile line just the same.

The honest limit on acid washing

We’ll say what most companies won’t: you can only acid wash a pool so many times. Every wash removes plaster. Over a surface’s 10–20 year life, that’s a handful of washes at most, roughly one every 3–5 years. Push past that and each wash eats into thinning plaster, exposing the rough aggregate underneath and shortening the surface’s life.

When we look at your pool and the plaster’s already thin or mottled, we’ll tell you straight that another wash is throwing money away — and that resurfacing prep plus a new finish is the better spend. We’d rather lose one wash and keep your trust.

When an acid wash is the right call

• Widespread calcium scale on the plaster, not just the tile
• Iron, copper, sunscreen, or organic staining across the surface
• A pool coming out of a green algae bloom that’s stained the plaster
• Prepping the surface tone before selling a home
• A plaster surface that’s dull but still has good thickness left

If your pool just has debris and mild algae with clean plaster underneath, you may only need a drain-and-clean — cheaper, and no plaster removed. We’ll tell you which you need.

Acid washing pebble and quartz pools

A lot of newer Chandler pools — especially out in Ocotillo, Fulton Ranch, and Clemente Ranch — have pebble or quartz finishes rather than old white plaster. These can be acid washed, but they call for a lighter touch and more experience. Pebble finishes have exposed aggregate that reacts differently to acid than smooth plaster, so we typically use a milder concentration and work carefully to lift calcium and light staining without over-etching the exposed stone. Heavy calcium on a pebble pool is often better handled by bead blasting the tile line and treating the surface gently rather than a hard acid wash. If you have a pebble pool, tell us in your photos — it changes how we approach the job.

How long it takes and what to expect

Plan on a couple of days from start to swimmable. The drain alone takes several hours, the wash and neutralize is roughly a day of work, and refilling from the hose takes a day or more depending on pool size. During the process the pool is empty, so we schedule to minimize the time the shell sits in the sun. You don’t need to be home for most of it — many owners just leave the gate accessible and get photo updates. Once it’s refilled we return the chemistry to a balanced, swimmable range so you’re not left guessing.

Get a flat acid wash quote

Send a few photos and we’ll give you a flat price and a date — plus an honest read on whether an acid wash or a resurface is the smarter move for your Chandler pool. Every quote is free.