A Las Vegas summer is hard on plaster. Heat, monsoon dust, and high evaporation push TDS and leave stains weekly service can’t wipe away. September through November is the window when a pool drain and acid wash together do the most good — cooler days, post-dust cleanup, and a clean reset before winter. We always recommend acid wash with the drain, not a drain alone.
Why September–November
- Cooler water and air = safer, more comfortable drain and acid work.
- Dust and monsoon season easing; less new grit landing in an empty shell.
- Time to reset chemistry before holiday guests and cooler months.
- Avoids peak summer rush when crews and schedules are slammed.
Why drain matters
Weekly brushing and vacuuming keep a pool swimmable. They don’t drop TDS, strip heavy metals, or clear the sludge that settles at the bottom of a long desert season. A full pool drain empties that load — then acid wash cleans the empty shell before refill so the reset lasts.
Why acid wash after the drain
Once the pool is empty, acid wash cleans the plaster and surface of water residuals left after the drain — algae film, mineral scale, and calcium deposits you can see (and plenty you can’t). That step is not optional if you want the refill to stay stable.
Skip the acid wash and those residuals go right back into the new water. Calcium, CYA, and TDS climb again within a few months — undoing most of what the drain bought you. In Las Vegas and Henderson, we recommend drain + acid wash as a pair every time we empty a pool for this kind of reset.
Who needs it this fall
- Water that won’t stay clear no matter the chlorine
- Rough or etched-feeling plaster
- Stubborn stains or white scale rings
- Last full drain two or more summers ago
- Heavy monsoon dust exposure this year
If you’re unsure, start with our guide on when to drain and acid wash — then book the fall window while it’s still cool. Homeowners in Henderson and across the valley see the same post-summer mineral load.
FAQ
Can I wait until spring?
You can, but fall gives you a clean pool for the cooler months and avoids competing with spring rush.
Drain only or drain + acid wash?
Always drain + acid wash. A drain empties high-TDS water; acid wash cleans residual scale and film off the plaster so refill water doesn’t pick it back up. Drain-only usually means calcium, CYA, and TDS bounce within a few months.
How often in the desert?
Many Las Vegas and Henderson pools need a drain and acid wash every 2–3 years — sooner after a brutal dust summer.
Ready for a fall reset?
Book a pool drain or acid wash, or get a free quote — cooler Sep–Nov days are the best window in Las Vegas & Henderson.
Pool drain in Las Vegas · Pool acid wash · Pool service in Henderson
