North Texas weather doesn't give much warning. A severe thunderstorm, a hail event, or a multi-day rain system can arrive faster than most homeowners have time to prepare for — and each one creates specific pool challenges that need to be addressed before the storm arrives and immediately after it passes.
Ignoring storm preparation and post-storm pool care is one of the fastest ways to end up with a green pool, damaged equipment, or chemistry that takes days to correct in the middle of the swim season. Here's exactly what to do before and after a Texas storm to protect your pool.
Remove or secure loose items around the pool — Pool furniture, toys, cleaning equipment, and anything else around the pool deck that can be picked up by high winds needs to be secured or moved inside before a significant storm arrives. Wind-blown items that land in your pool damage surfaces, clog equipment, and create serious safety hazards. Items that blow into your skimmer or pump basket can restrict flow severely.
Do not cover your pool with a standard cover before a storm — This is a common instinct that actually creates more problems than it solves. A standard solar cover or winter cover is not rated to handle debris load from a severe Texas storm — it can be torn, damaged, or pushed into the pool by wind and heavy debris. Leave the pool open unless you have a motorized safety cover rated for weather protection.
Turn off and protect electrical equipment if conditions warrant — For extreme electrical storms with significant lightning risk, turning off pool equipment at the breaker protects against electrical surge damage. Most pool equipment has some surge protection built in, but a direct or nearby lightning strike can overwhelm standard protection. This step isn't necessary for routine thunderstorms but makes sense before a severe storm with significant lightning activity.
Shock the pool before a major rain event if possible — If you have advance notice of significant rainfall, shocking the pool before the storm arrives pre-loads your chlorine level before rain dilutes it and introduces phosphates, organic material, and contaminants from the surrounding area. Starting with higher chlorine going into a storm reduces the post-storm chemistry correction needed.
Lower the water level slightly before heavy rain — If significant rainfall is forecast, lowering your pool water level by three to four inches creates room for rainwater without the pool overflowing onto the deck and surrounding area. An overflowing pool washes deck chemicals, fertilizer, and soil into the water and can damage the pool surround and landscaping.
Remove debris from the pool as quickly as possible — Every hour that leaves, branches, and organic debris sits in your pool it's consuming chlorine and driving phosphate levels higher. Skim thoroughly immediately after the storm passes and remove everything you can from the surface and pool floor.
Empty skimmer and pump baskets — Storm debris loads baskets significantly faster than normal. Check and empty both immediately after a storm to restore proper flow before your pump runs against restricted suction for extended periods.
Test your water chemistry before adding anything — Rainfall dilutes chlorine and other chemistry parameters while simultaneously introducing contaminants, organic material, and phosphates from the surrounding environment. Test your complete water chemistry before adding chemicals — don't assume what needs to be added without knowing where your parameters actually landed after the storm.
Shock the pool after the storm — After testing, shock the pool after sunset to restore sanitization levels and address the organic load introduced by rainfall and wind-blown debris. For heavy rain events, expect to need significantly more shock than a standard weekly treatment to restore effective chlorine levels.
Address phosphates — Rainfall is one of the primary ways phosphates enter pool water — from roof runoff, surrounding soil, fertilizer, and organic debris. Test phosphate levels after any significant rain event and treat if elevated. High post-storm phosphates combined with warm DFW temperatures create ideal algae growth conditions that need to be addressed before they become a problem.
Run your pump continuously until chemistry is restored — After a significant storm event, running the pump continuously for 24 to 48 hours keeps water circulating through the filter and helps restore chemistry stability faster than normal operation hours would achieve.
The 48 to 72 hours after a significant storm are the highest risk window for algae development in a DFW pool. The combination of diluted chlorine, elevated phosphates, organic debris load, and warm water creates exactly the conditions algae needs to establish quickly.
Watch your water clarity carefully in the days after a storm. Any cloudiness, green tint, or unusual appearance that develops within 48 to 72 hours of a storm event should be addressed immediately with professional treatment rather than a wait-and-see approach. Algae caught in the very early stages is a fraction of the work and cost of a full bloom that's been developing for several days.
After a significant North Texas storm, Bluewater Pool Care can assess your pool's condition, address post-storm chemistry, and get your water back to safe and clear as quickly as possible.
Get a Free Estimate — we'll keep your pool protected through whatever Texas weather brings.
