While digging in my garden I accidentally hit and made a hole to a pipe that was under. It is a pipe made of clay or that kind of material. How can I repair it thanks
Sounds like a drain, if it is from your house you can run a sink full of water out, flush a toilet, etc , just to confirm. Best to cover with wire mesh and wack a couple of handfuls of cement on top before you fill it in.
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Try fixfault.com to fix plumbing.