What green pool recovery involves

Why appearance alone cannot set a plan

A pool that has turned green can start to look better well before it is actually safe to swim in. Clearing the visible cloudiness and getting the water balanced enough for swimmers are two different things, and they do not finish at the same time. That is why we ask that everyone stay out of the pool until the water tests right, not just until it looks clear to the eye.

We do not use a set number of days or a change in color as any kind of safety promise. Color can be a poor guide, since water that seems clean may still test poorly, and water that looks slightly off may be closer to ready than it appears.

How the treatment is coming along, and when the pool is ready for swimmers again, need to be judged separately. Keeping those two questions apart is what keeps the recovery process honest.

The recovery sequence

Green pool recovery is not a single step but a sequence, and each part depends on the one before it. Testing comes first, and it includes the stabilizer level, because chemistry cannot be corrected sensibly until the water has been measured. After testing, the pool is cleared of debris so that leaves and other material are not sitting on the bottom or floating in the water while treatment proceeds.

From there the work moves through chemistry correction and getting the filter working properly. Brushing helps clear what is clinging to the surfaces. The sequence ends the way it began, with testing, repeated until the water holds rather than slips back.

The order matters because clearing debris or adjusting chemistry on an untested pool, or filtering water that has not been corrected, tends to produce results that do not last. Working through each step in turn is what gives the recovery a chance to stick.

What the assessment looks at

Before any recovery plan is written, someone has to look at what is actually going on in the pool. That starts with the water itself, since a sample that has been tested tells more about the situation than a glance at the surface ever could. The state of the filter matters as well, because a filter that is worn out or clogged will not support the cleaning work ahead, and circulation gets checked for the same reason. Water that never moves properly will resist recovery no matter what else is done.

Water-replacement options are also looked at before any draining happens. Whether replacing some or all of the water makes sense depends on the pool and the situation, so that question gets settled early rather than mid-job.

Taken together, the tested water, the condition of the equipment and the amount of work required shape the estimate the homeowner receives.

Quoted and approved before work starts

Green pool recovery is not something we price sight unseen. Before we quote anything, we come out and assess the pool, because a plan drawn up from a guess is a plan that changes halfway through. Looking at the pool first means you know what the work involves and what it will cost before we start.

That same rule applies to anything beyond the recovery itself. If the pool needs a repair, or a piece of equipment needs replacing, those are separate jobs, each one quoted on its own and approved by you before any of that work happens. Nothing gets added to the bill because it seemed necessary at the time.

The result is that the scope of the job and the price are settled up front, and you approve each piece of work before it begins.

Draining and water replacement

Sometimes the cleaner path is not chemicals but fresh water, and Sullivan's Pool Service weighs treatment against draining and refilling for the actual pool rather than assuming one approach fits every situation.

Water chemistry plays a role in that decision. The Pool and Hot Tub Alliance places the ideal cyanuric acid range at 30 to 50 ppm and says it should not go above 100 ppm. When stabilizer climbs past that point, chlorine loses effectiveness, and partially draining the pool and refilling it is one way to bring the level back down. No amount of added chlorine fixes water that carries too much stabilizer, so replacement may be the sensible option.

Before any draining work happens, Sullivan's Pool Service assesses both treatment and water-replacement options first. That step matters because an emptied pool that cannot be refilled leaves a homeowner with a serious problem, so the check protects against that outcome.

Next step: green pool recovery.

In Austin

Fill water matters here. Austin Water reported finished water leaving its three plants in the second quarter of 2026 at pH 9.65 to 9.74, total hardness of 76 to 77 mg/L as CaCO3, total alkalinity of 51 to 60 mg/L, and 2.52 to 2.69 mg/L of chloramines. Those are averages for tap water, not readings of your pool, so test the pool itself after a top-up.

Source: Austin Water, Water Quality Summary, 2nd Quarter 2026 (samples April 1 to June 30, 2026), finished water at the Davis, Ullrich and Handcox plant taps.

Related articles

• Pool turned green between visits
• How long does a green pool take to clear?
• Why is my pool cloudy in Austin?

Sullivan’s Pool Service maintains pools in and around Austin, including Northwest Hills, South Austin, West Lake Hills, Tarrytown, Great Hills, River Place, Crestview, East Austin, North Austin, West Campus, Hyde Park, Downtown Austin and St. Johns, and in Bee Cave, Cedar Park, Georgetown, Leander, Pflugerville and Round Rock. See every service area.

Weekly residential service has one fixed monthly price, set by pool size: see pool service pricing for what each size tier covers.