How healthy is New York City tap water


Just got a water tester to seeing when we need to replace our RO filters and have become obsessed with testing the quality of the water I drink.

Water Tester: http://www.amazon.com/HM-Digital-TDS-4TM-Meter-Thermometer/dp/B001RK38LU

RO System we purchased two years ago in September: http://www.amazon.com/Aquaphor-RO-101-Water-Filtration-Remineralization/dp/B00JLW57FQ/ref=sr_1_sc_1?s=hi&ie=UTF8&qid=1460774689&sr=1-1-spell&keywords=aqauphor