How to Read Your Water Quality Report: Understanding Contaminants, MCLs, and What They Mean
Quick Answer TL;DR: Your Consumer Confidence Report (CCR) is the annual report your drinking-water utility must send you — and it’s full of numbers that most people skip. Reading it correctly comes down to three things: (1) know the units (mg/L = ppm, µg/L = ppb), (2) understand MCLs — the Maximum Contaminant Level is the enforceable safety ceiling, not a “zero-risk” target — and (3) look at whether any detected level is above its MCL. For private well owners, there’s no CCR — you get your own lab test, but you interpret it with the exact same MCL framework. ...