Find Leak in Waterfall
Joe Spinelli doesn't like surprises even though he lives in Surprise, AZ. He's also pithy.
"Who do I call to find a leak in my waterfall in my yard?"
Here's Joe's pond and waterfall. Photo credit: Joe Spinelli
Here's my answer:
Joe, I don't know that I'd call anyone just yet. Why not try to find it yourself?
I would turn off the pump and allow the water to just sit in the pool basin. Allow it to drop to it's lowest level where you're no longer loosing water.
Move the rocks away from the rubber liner and look closely for a slit, hole, etc.
The problem is right along the water line.
Tim built custom homes and did ultra-custom remodeling for 20+ years before launching his Ask the Builder media presence. He was selected as one of the Big 50 by Remodeling magazine in 1993. This award gave birth to Ask the Builder in October 1993. Tim also operates https://DrawPlumbingPlans.com. His @askthebuilder YouTube channel was the first home improvement channel on YouTube.