Our Reviewers
Every product reviewed on H2O Insider is tested by a named expert. No anonymous reviews, no ghost-written listicles — real people, real credentials, real homes.
Rob Boirun
Founder & Lead Reviewer
Rob founded H2O Insider after spending two years unable to find trustworthy, independent water filter reviews online. He tests every product in his own home and partners with Tap Score for lab verification. His reviews have been cited by Consumer Reports and Environmental Working Group.
34 articles →
Sarah Chen
Water Quality Research Analyst
Sarah brings academic rigor to H2O Insider's contaminant coverage. She spent six years at a certified water testing laboratory before joining the team, and she interprets lab data and writes our contaminant guides. She lives in Sacramento, CA, where she tests her own well water quarterly.
18 articles →
Mike Callahan
Licensed Plumber & Installation Expert
Mike has installed more water treatment systems than most people have reviewed. He contributes installation guidance, evaluates ease-of-install scores, and calls out any product that requires a professional where it claims DIY. He is based in Oakland, CA.
11 articles →