Pillar 2 – Reverse Osmosis
Beyond PFAS and Lead: About 1 in 4 US Systems Reported Another Contaminant Over a Limit
Correction (2026-06-29): a watchdog data-integrity audit corrected two things in the underlying data – the EPA Six-Year Review’s TTHM total (which had…
The 2027 EPA Lead Rule Nearly Triples the Water Systems Over the Line
Here is the honest national picture of lead in tap water, and it is not the one either side of the argument…
About 1 in 9 US Water Systems Averaged PFOA or PFOS Above the EPA Limit
About 1 in 9 US public water systems -- 1,056 of the 9,235 that reported a full set of EPA UCMR5 results…
Does a Refrigerator Water Filter Remove Lead? What NSF 53 Actually Means
Does a refrigerator filter remove lead? Sometimes – but only if that exact filter carries an NSF/ANSI 53 lead-reduction certification. Most refrigerator…
How Often to Change Reverse Osmosis Filters (by Stage)
A reverse osmosis system is not one filter. It is a stack of three to five filters, each with its own job…
How to Remove PFAS From Water: Which Filters Are Actually Certified
If you want to know how to remove PFAS from water at home, the short answer is this: use a filter certified…
Whole House Water Filter vs Under-Sink RO: Which Solves What
The short answer to whole house filter vs under sink RO: they solve different problems, and most homes that need one eventually…
Is Reverse Osmosis Worth It? An Honest Cost Breakdown
Is reverse osmosis worth it? For most people on a normal municipal supply, a reverse osmosis system is a nice-to-have, not a…
Reverse Osmosis & Drinking Water: Is It Worth It, and What Does It Remove?
Reverse osmosis, decided honestly Reverse osmosis is the most thorough point-of-use treatment most homes can buy – and it has real trade-offs…