I have copper in my pool water and not 100% sure where its coming from. I took water from the leveler output to the pool and had it tested. Came back as having copper in it. The hose did not. Then I checked the line from the house to the pool and its all pvc. So the only copper could be the connection at the vacuum breaker or the breaker it self. The breaker is made of brass the connections are copper. The breaker does not show wany signs or leaking or wear on the outside. Not sure if replacing breaker will solve the issue. Where else can copper come from? Any suggestions?