Invest in a TDS meter, the API Master Test Kit, and a GH/KH test kit. NYC tap also uses chlorine so use an appropriate dechlorinator. You can read the NYC water report for more info. Anyways, straight out of the tap, I get pH -7.2, dGH - 2, dKH - 2, TDS - 50-60ppm. It varies in the 5 boroughs though, depending on your location but the water is usually soft in most places.
RAOK Club #77|The Fraternity of Dirt #112