Clueless first time homeowner here. I purchased a home that has a sump with an attached radon mitigation system. The entire cover of the sump is sealed with caulk, so it's impossible to test if the pump is working by adding water. I do not know when the pump may have been tested last, the radon mitigation system was installed at the same time when the home was built in 2014. The entire sump is bone dry so I think the basement is very watertight, but I'd still like the peace of the mind of doing yearly testing to ensure the pump is working.
Is the white cap on the right side just a plug for an existing access port? Meaning I'd need to remove the caulk each time and recaulk?
If not, I've thought of drilling a 4" hole with a hole saw and capping it with a grommet/acrylic cap - something like this retrofit port.