Why Las Vegas Pools Need a Reset More Often

Las Vegas has some of the hardest water in the United States — calcium hardness regularly exceeds 400 ppm. Add extreme evaporation (pools can lose 1–2 inches per week in summer), intense UV, and mineral-rich fill water, and the result is rapid TDS and CYA accumulation that chemicals alone cannot fix. Most Las Vegas and Henderson pools need a full drain every 3–5 years and an acid wash every 2–3 years.

When to Drain Your Pool

  • CYA above 100 ppm — Stabilizer (cyanuric acid) blocks chlorine from working. When it climbs this high, a drain is the only real fix.
  • TDS above 2,500 ppm — Total dissolved solids at this level make water chemistry extremely hard to maintain and shorten equipment life.
  • Persistent cloudiness — Water that won't clear despite correct chemistry usually signals mineral saturation.
  • Preparing for acid wash — The pool must be fully drained before an acid wash can be performed.
  • It's been 3–5+ years — Even if readings look acceptable, resetting the water every few years is good preventive maintenance in Nevada's climate.
Important: Pool drains in Las Vegas and Henderson must be discharged through the main sewer line — never to the street or storm drains. All Pools Pro handles this compliantly on every drain service.

When to Acid Wash Your Pool

An acid wash removes the top layer of plaster, stripping away mineral deposits, staining, and discoloration to restore the original surface brightness. Signs it's time:

  • Visible scale, calcium deposits, or white mineral film on plaster surfaces
  • Brown, green, or grey staining that brushing won't remove
  • Rough, chalky surface texture where plaster used to feel smooth
  • Pool looks dull and cloudy even with correct chemistry
  • It's been 2–3+ years since the last acid wash — recommended interval in Las Vegas hard water

Drain + Acid Wash — The Best Combination

  • Drain first resets TDS, CYA, and mineral saturation in the water
  • Acid wash then restores the plaster surface while the pool is empty
  • Refill with fresh water starts you back at baseline chemistry
  • Result: the longest possible interval before your next reset is needed

What the Acid Wash Process Looks Like

  1. Full drain — Pool is completely emptied via sewer-compliant discharge. 1–2 inches of water left to protect plaster from desert heat.
  2. Surface evaluation — Technician assesses staining, scale severity, and plaster condition.
  3. Acid wash application — A diluted acid solution is applied to walls, steps, and floor to dissolve mineral deposits and the top plaster layer.
  4. Neutralization & rinse — Acid is neutralized with soda ash and thoroughly rinsed. Controlled disposal per regulations.
  5. Refill & chemistry reset — Pool is refilled and starter chemistry is set. Water typically stabilizes within 1–2 days.

Common Questions

Does an acid wash damage plaster?

When performed by CPO®-certified technicians, an acid wash removes approximately 1/32 of an inch of plaster — a very thin layer. Most pools can safely undergo multiple acid washes over their lifetime. Aggressive or DIY acid washing can cause damage, which is why professional application matters.

How long does it take?

A full drain typically takes 6–10 hours depending on pool size. The acid wash itself is performed the same day once the pool is empty. Refill takes 12–24 hours from your fill line.

Can I acid wash without draining?

No — the pool must be fully empty for an acid wash. Attempting to spot-treat a filled pool with acid is dangerous and ineffective.

Ready to Reset Your Pool?

Pool drain from $220 · Acid wash from $550 · CPO®-certified technicians · Las Vegas & Henderson. Book online or call us for a firm quote.

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