This is Bura Soda Water Park in Camiguin. Yes, its a soda spring and the water is really safe for drinking!
At first I thought it was a joke that the water in the pool is potable and comes from a clean source until the locals showed me. Well, not actually drinking the water in the pool but from a faucet whose water source is the same as the pool.
I went to Bura Solda Spring and Water Park right after I visited the Sunken Cemetery because they are just near each other.