Marcus Chen 
Lead leaches in from service lines and solder on the last stretch to your tap, so two homes on the same street can test very differently. These eight filters are certified under NSF/ANSI 53 or 58 to cut it by 99 percent or more.
Gravity filters need no power and no plumbing, and almost none carry independent certification for health contaminants. That has changed, and the detail matters more than the headline.
Two certified budget under-sink reverse-osmosis systems, side by side. The iSpring RCC7AK adds minerals back for taste; the APEC ROES-50 is the reliability benchmark. Here is which one to buy.
One is a certified countertop reverse-osmosis system, the other a lab-tested carbon pitcher that keeps your minerals. Here is how AquaTru and Clearly Filtered compare on removal, cost, and taste, and which is right for you.
A countertop filter gives you strong filtration with no plumbing, but the choice comes down to two very different kinds: certified countertop reverse osmosis, which removes the most but needs an outlet, and no-power gravity filters, which travel anywhere but aren’t independently certified. We scored the ones we’ve reviewed to match the right one to your water.
A whole-house system treats water at every tap, but there’s no single best one, because they solve different problems. City water needs carbon for chlorine and taste, well water needs iron and sulfur removal, and hard water needs softening. We scored the systems we’ve reviewed and matched each to the water it’s actually built for.
Reverse osmosis is the most thorough home filtration there is: the one method that reliably removes fluoride, arsenic, and dissolved solids, along with lead and PFAS. We scored every RO system we’ve reviewed, countertop and under-sink, to match the right one to your water, not the highest commission.
A filter pitcher is the cheapest, simplest way to improve your water, but a $25 jug and a $99 jug are not doing the same job. We scored every pitcher we’ve reviewed so you can match the right one to your water, not the loudest marketing.
An under-sink filter is the sweet spot for most kitchens: filtered water on demand, hidden in the cabinet, with far more power than a pitcher and none of the whole-house cost. We scored every under-sink system we’ve reviewed, reverse osmosis and carbon alike, to match the right one to your water, not the highest commission.
The Clearly Filtered 3-Stage Under the Sink plumbs the brand’s broad Affinity filtration into your cold-water line, so you get on-demand filtered water instead of a slow pitcher pour. It targets 232+ contaminants and keeps your minerals, but it’s expensive to buy and one of the priciest systems to run. Here’s the verdict.