I'm sure you have the same water company as me (NJ american water) formerly Elizabethtown.
The problem is the variable sources:
Your water comes from a public community water system consisting
of 129 wells, 7 surface water intakes, 1 purchased ground water
source, and 6 purchased surface water sources.
Source water comes from Millstone River, upper Potomac-Raritan-
Magothy (PRM) aquifer, Raritan River, middle PRM aquifer, Delaware
& Raritan Canal, Brunswick aquifer, and The Stockton Formation.
Water is purchased from Elizabeth Water Dept., South Brunswick,
Newark Water Co., Monroe Twp., Flemington Water Co., and
Franklin Twp.
I had my water tested at ward labs about a month ago but who knows what it would be year round. Check out Bobby M's Water Adventure thread.