Quick Answer
ZOOSHEN's water science and research content draws on public sources — primarily USGS groundwater data and the EPA's Consumer Confidence Report (CCR) framework that utilities must publish. We do not fabricate city-level numbers, and we always direct you to your utility's report as the authoritative source for your water.
Problem
Water content online often presents unverified city-level numbers as fact. Understanding our method tells you what you can rely on and what to verify.
Product Recommendation
Product performance claims are separate from water data: ZOOSHEN publishes validated media, standards, and reduction levels only after testing. See /technical/nsf-177 for how certifications are verified.