Yes, a pool cover saves water in Tucson. Evaporation is the main way an outdoor pool loses water and heat, and our dry air, strong sun and afternoon wind speed it up. A cover blocks that loss, and the U.S. Department of Energy says covers can save 50 to 70 percent of pool heating costs.
Covers also matter for permits now. Tucson’s new pool code requires an evaporation cover on new and remodeled pools before final inspection. Here is how the main types compare, what the rules say, and how to plan a pool that works with a cover.
Why do pools lose so much water in Tucson?
Pool water evaporates every day, all year. How fast depends on the water temperature, the air temperature, humidity and wind. Tucson stacks almost every factor against you: low humidity most of the year, intense sun, and wind that picks up in the afternoon and during monsoon storms.
You see it as a dropping water level and a running autofill. You also pay for it twice. Every gallon that leaves has to be replaced at Tucson water rates, and the water that evaporates carries heat with it.
The DOE’s Better Buildings pool efficiency guide puts it plainly: evaporation is by far the largest source of energy loss for pools, and covers can reduce evaporation, minimize water loss and save 50 to 70 percent of pool heating costs.
What else does a cover do?
- Holds heat. A covered pool loses less heat overnight, so mornings feel warmer in spring and fall. Our pool heating guide explains why a cover is the first upgrade to make before buying a heater.
- Keeps out dust and debris. After a monsoon storm, a covered pool is a lot less work. Less dirt in the water means less filter cleaning.
- Helps the chemistry. Sun breaks down chlorine. Less sun on the water and less debris in it can make the water easier to balance. Tucson’s hard water already makes chemistry a job, as our hard water guide covers.
Does Tucson require a pool cover?
For new pools and remodels that need a permit, yes. The City of Tucson adopted the 2024 International Swimming Pool and Spa Code with local amendments. One amendment requires new and remodeled outdoor pools, spas and hot tubs to have a cover that limits evaporation before the final inspection is approved. Permit applications received on or after July 1, 2026 must follow the new code.
Our news post on Tucson’s 2024 pool code and cover requirement has the details. Pima County and Oro Valley have similar cover rules, so ask your permit office if you are outside city limits.
Two things to keep in mind:
- This is an evaporation cover rule. It is about saving water, not about child safety.
- It affects your budget and design. Plan the cover type at the start, not after the pool is finished.
Types of pool covers compared
There are three main options homeowners ask us about.
Solar covers (bubble covers)
These are the blue or clear plastic sheets with small air bubbles on one side. They float on the water and are cut to fit your pool. They block evaporation and help hold heat, and clear versions let some sunlight through to warm the water.
Solar covers are the lowest-cost real cover. The downside is handling. On a mid-size pool, pulling one off and rolling it up is a chore, so many owners use a reel on a stand. In Tucson sun, the plastic also breaks down over time and needs replacing.
Automatic covers
An automatic cover is a fabric cover that rolls out and back on tracks with a motor, using a key switch or button. When it is closed it covers the whole pool. It is the easiest cover to live with, which means it actually gets used, and that is where the savings come from.
Many automatic covers are also built as safety covers, designed to hold weight and keep a child from slipping in. That is a separate feature from evaporation control, and it is tested to its own standard. Ask the cover maker which standard a model meets.
Automatic covers need planning. The cover rolls onto a drum in a housing at one end of the pool. The tracks run along the sides, either under the coping or on top of the deck. That works best with:
- A rectangle or other straight-sided shape
- Steps, benches and ledges that sit inside the cover’s path or are designed around it
- Space at one end for the housing and motor
- No rock waterfalls or raised features in the way of the tracks
Liquid covers
A liquid cover is a product you pour into the pool. It spreads into a very thin layer on the surface that slows evaporation. It is cheap and takes no effort, but it is not a physical cover. Wind, swimmers and the circulation system break up the layer, and Tucson gets plenty of afternoon wind. It also does nothing about dust, leaves or monsoon debris. Some owners use it as an extra on top of other habits, but it is the weakest of the three. Ask your permit office before counting on one to meet the Tucson cover rule.
Pool cover comparison table
| Solar (bubble) cover | Automatic cover | Liquid cover | |
|---|---|---|---|
| Evaporation control | Good when on the pool | Good when on the pool | Limited, breaks up in wind |
| Heat retention | Good | Good | Some |
| Keeps out dust and debris | Yes | Yes | No |
| Safety cover | No | Some models are designed as safety covers | No |
| Ease of use | Manual, a chore on bigger pools | Push a button or turn a key | Pour in on a schedule |
| Upfront cost | Lowest | Highest | Low, but ongoing |
| Best pool shapes | Any | Rectangular and straight-sided | Any |
Because cover pricing depends on size, shape and the model, we do not quote cover prices here. Ask the cover supplier for a quote for your pool.
Can a pool cover replace a pool fence in Arizona?
In general, no. Arizona’s pool barrier law, A.R.S. 36-1681, requires a pool to be entirely enclosed by a wall, fence or other barrier at least 5 feet tall, measured on the outside.
The law does mention covers in one place. When a house or living area forms part of the pool enclosure, the law offers a few options for protecting that side. One option is a motorized safety cover that runs on a key switch and meets the ASTM standard the law names. In plain words, a qualifying motorized cover can stand in for things like door alarms or high door latches on the house side. It does not remove the need for a barrier on the rest of the yard.
Local codes work the same way. The 2024 pool code adopted in Tucson, Pima County and nearby towns lists a powered safety cover as one option where the house wall is part of the barrier. Our guide to Arizona pool barrier and fence rules walks through every option.
We build every pool barrier to at least 5 feet. And a solar cover or liquid cover is never a safety device. A child can slip under a floating cover, so never let anyone walk or play on one.
Can Meraki plan a pool for a cover?
Yes. We do not sell or install covers, but we design pools so the cover you want will fit and work. That starts in the 3D design, where we can show you how the shape, steps and features line up with an automatic cover’s tracks and housing.
If an automatic cover is on your list, a rectangular or other straight-sided pool is the easiest path. Our post on geometric vs freeform pool shapes explains the trade-offs. We can also plan the equipment layout and electrical for the cover motor, and keep raised walls and water features out of its path.
If you prefer a freeform shape, a solar cover cut to fit is still a good option. We can plan deck space at one end for a cover reel so it does not block your walkway.
Tips for getting the most from a pool cover in Tucson
- Use it. The savings only happen when the cover is on. A cover that sits rolled up all summer saves nothing.
- Cover at night in spring and fall. That is when the water loses the most heat.
- Cover during windy stretches and dust storms. It cuts evaporation and keeps the pool cleaner.
- Watch summer water temperature. In July and August, a cover can make the water too warm. Some owners leave it off on the hottest weeks.
- Remove standing water and debris from the top. After a monsoon storm, clear the cover before opening it.
- Store it in shade. Sun damage is what wears out solar covers fastest.
- Never swim with the cover partly on.
Plan your pool with a cover in mind
A cover is now part of building a new pool in Tucson, and it is one of the simplest ways to cut water and heating costs. If you are planning a new pool or a remodel, talk with us early about the cover you want so the design works with it.
Meraki Pools AZ is a family-owned Tucson pool builder, licensed under AZ ROC #342505 and #352797. Call (520) 342-8335 or request a free estimate.
Put this guide to work
Planning your own project? See our Block Walls & Pool Barrier Walls in Tucson, Custom Pool Construction in Tucson and Pool Remodeling & Renovation in Tucson, or read about building a pool in Oro Valley.
Frequently asked questions
Does a pool cover save water in Tucson?
Yes. Most of the water an outdoor pool loses goes to evaporation, and a cover blocks the sun, wind and dry air from the surface. In Tucson's low humidity and afternoon wind, that adds up over a year. The savings depend on how often the cover is actually on the pool.
Is a pool cover required in Tucson?
For new and remodeled pools, yes. Tucson's amendments to the 2024 pool code require new and remodeled outdoor pools, spas and hot tubs to have a cover that limits evaporation before final inspection, for permit applications received on or after July 1, 2026. That rule is about saving water. It is not a safety cover rule.
Can a pool cover replace a pool fence in Arizona?
Not as a general rule. Arizona's law, A.R.S. 36-1681, requires a 5-foot barrier around the pool. Only where the house wall forms part of that enclosure does the law allow a key-operated motorized safety cover as one of the options for protecting the house side. The rest of the barrier still has to be there.
Are solar pool covers worth it in Arizona?
For many owners, yes. A solar cover is a low-cost way to cut evaporation and hold heat on cool nights, which can stretch your swim season. The trade-off is handling it. It has to be pulled off and put back by hand, and the Tucson sun breaks it down over time.
Do liquid pool covers work in Tucson?
They can help a little on calm days, but they are not a real cover. Liquid covers form a very thin layer on the water, and wind, swimmers and the pump break it up. They also do nothing to keep out dust and monsoon debris.
Can you add an automatic cover to an existing pool?
Sometimes. Automatic covers work best on rectangular pools with straight walls and room for the cover housing at one end. Freeform pools, raised walls, rock features and some steps make it harder. If you think you want one, it is far easier to plan for it before the pool is built.
