Sacramento Water Bill SHOCK

[Minka Sha]

I closed on a fourplex in early June and just received the water bill and it's $711.40 for the period of June 5th to July 20th. 

This threw my math off. How can I get this under control??? Is this expected? I have a duplex and two cottages in the back. Duplex is 2 BR, 1 BA each side and cottages are 1BR/1 BA each. 

Here is the break down:

Water flat charge

Waste water flat charge

Storm drainage flat charge 

These total to 351.00 

Then we have:

Garbage : 94

Street sweeping : 5

Recycling, Yard waste : 75.32

FINALLY:

Regional Waste water treatment: 161