After using the water outside, the water pressure in my house goes way down. When we flush the toilet you can hear whistling in the pipes and sometimes bubbling like you would after the water has been turned off. We do not have a water pump so I know it is not that. The only thing I can think is that when we use the water outside it pulls some of the water from the pipes in the house and puts bubbles in them. But I don't know exactly how to fix it. Most of the time it just fixes itself after about a month or two, but I really don't want to wait that long to get my water pressure back.
I am on city/county water. There is no well. I am not sure what my pipes are made of but I think they are pvc. I live in a trailer and I know that the pipes under my trailer are pvc. The pipes coming to the house are about 13 years old. Please let me know if this helps.
Where would I check to see if it is a bad pressure regulator? Would that be on the water meter?