Flash Floods and Fertilizer: Post-Storm Pool Recovery Tips
July in Central Texas is famous for its heat, but it also brings sudden, severe summer thunderstorms. When a downpour hits neighborhoods like Spicewood or Bee Cave, it dumps thousands of gallons of freshwater into your pool in a matter of minutes. Worse, the high winds blow leaf debris, organic dust, and lawn fertilizers directly into your water. If you don’t take action immediately after the clouds clear, that storm runoff will destroy your chemical balance and trigger a massive algae bloom.
At Above & Beyond Pool Service, we specialize in fast storm recoveries. Here is the exact checklist our technicians use to balance and clean a pool after a major summer weather event.
1. Lower Your Water Level Safely
A heavy downpour can easily raise your pool’s water line past the midpoint of your skimmers. When the water is too high, the skimmer cannot pull debris off the surface effectively, causing leaves to sink to the bottom. Use your equipment pad’s multi-port valve or waste line to drain the water back down to the proper level. Remember: our team specializes in above-ground plumbing adjustments, so always make sure your pad-side valves are aligned correctly before opening any waste ports.
2. Shock the Pool Immediately to Fight Organics
Rainwater isn’t pure; it carries nitrogen and atmospheric contaminants. As it washes across your landscaping and coping, it drags mud and organic phosphates into the water. This organic material rapidly consumes your free chlorine. Even if your water looks clear right after the storm, your sanitizer levels are likely near zero. Super-chlorinate the water immediately to oxidize the incoming pollutants before algae has a chance to anchor to your plaster.
3. Test and Reset Your pH Balance
Lawn fertilizers are highly acidic or highly alkaline, and rain in the Austin area can swing your pH levels dramatically. High pH prevents your chlorine from sanitizing effectively, while low pH can corrode your heater core. Test your pH and total alkalinity within 12 hours of a major storm and use the appropriate balancers to bring them back into the safe zones. If your system requires a deep chemical reset or a full filter flush after a mud-runoff event, explore our weekly pool maintenance options to have a pro handle the cleanup seamlessly.