Worms after rain?

[Matthew Collins]

Every time it rains heavy, I end up with worms in the deep end. Guess they crawl across the deck and drop in. Pretty gross fishing them out with the net. Anybody figure out how to stop that or is it just one of those pool-owner problems you live with?

 

[Michael Young]

Ah, I’ve had that happen too! After rain, the ground gets wet and the worms end up in the pool. I usually try using a pool cover or make sure there’s some kind of barrier around the pool area to stop the worms from getting in. It’s a bit of a hassle, but it helps!

 

[Brandon Hayes]

I get the same thing after a downpour, and what helped me was improving drainage right around the pool deck. When the water doesn’t sit there, the worms don’t get forced up and wander straight into the pool. A simple fix I tried was laying a thin gravel strip along the edge, and it cut the problem down a lot. Still find one or two after a big storm, but nowhere near as many.

 

[Sean Whitaker]

You’re not imagining it, heavy rain basically forces worms to go wandering, and a smooth, damp pool deck is like a highway straight into the deep end. One thing that helped cut it down for me was changing the edge conditions rather than chasing the worms themselves. Worms don’t like crossing hot, dry, or rough surfaces.

If you’ve got concrete or pavers right up to the pool, keeping that area swept clean and allowed to dry quickly after rain helps more than you’d think. Standing moisture on the deck gives them cover. Some people also have luck with a narrow strip of coarse material (like rough mulch or crushed stone) set a little farther back from the coping, so worms don’t easily reach the pool edge in the first place.

Timing helps too. If you can skim them out early, before the sun comes up strong, you’ll usually catch most of them floating before they sink and break apart. Not glamorous, but it’s quicker and keeps the water from getting cloudy.

Realistically, you may never get it to zero after big storms, but reducing how inviting the deck and perimeter are makes it go from “gross problem” to “annoying but manageable.”

 

[Ivy Adewale]

I have seen this too, and after heavy rain worms basically try to escape soggy ground, and a wet pool deck turns into a straight path into the water. The biggest thing that cuts it down is getting the area around the deck to drain and dry faster (fix the drainage or where runoff flows), then adding a small “barrier” along the edge, like a strip of coarse gravel or crushed stone, so they are less likely to crawl across. If you have a cover, putting it on during big storms can help too. And realistically, skimming right after the rain before they sink and break apart keeps the water from getting cloudy.

 

[Leon De Vries]

I get the same thing after a downpour, and what helped me was improving drainage right around the pool deck. When the water doesn’t sit there, the worms don’t get forced up and wander straight into the pool. A simple fix I tried was laying a thin gravel strip along the edge, and it cut the problem down a lot. Still find one or two after a big storm, but nowhere near as many.

I’m with what Brandon Hayes said about drainage. From my experience, worms aren’t aiming for the pool, they’re just escaping saturated ground and the pool becomes the lowest point. Once runoff around the deck was improved, the problem dropped a lot, so you’re not just stuck living with it and you can reduce it pretty noticeably.