Est. 2026 · Independent Water Intelligence
Independent
water answers.
Owned, used and checked.
We buy every filter we review and use it at home. We check every certification claim against the NSF, IAPMO and WQA listings. No manufacturer samples. No sponsored placements.
- 23
- Filters reviewed
- 16
- Contaminants covered
- 3
- Certifiers checked
- 100%
- Independent
Start here
What's your situation?
01
City Water
Your utility treats for bacteria and sediment — not PFAS, not lead from your service line, not chloramine byproducts. This guide covers all three for city water.
See recommendations02
Private Well
No utility, no regulation, no oversight. Well water quality depends entirely on your geology and your testing cadence. Bacteria, arsenic, nitrates, and iron are the four problems to rule out first.
See recommendations03
Renters
No drilling, no landlord permission needed. NSF-certified pitchers, countertop RO, and faucet filters give you verified lead and PFAS removal without touching a pipe.
See recommendationsTop-scored filters right now
ro
Waterdrop G3P800 Tankless RO
$649+ $120/yr
- 800 GPD capacity — near-instant delivery
- 3:1 pure-to-waste ratio (efficient)
undersink
Aquasana AQ-5300+ Under-Sink
$149+ $60/yr
- Best mid-range under-sink (non-RO)
- 800-gallon rated filter life (WQA listing)
undersink
Hydroviv Under-Sink Water Filter
$199+ $80/yr
- Custom-formulated for your ZIP code water report
- Free water nerd advice even if you don't buy
Know your water
What's actually in your water?
Your Consumer Confidence Report shows what your utility measured at the treatment plant — not at your tap. Lead leaches from service lines after treatment. PFAS isn't tested by most utilities. Chlorine reacts with organic matter in your pipes to form carcinogenic byproducts. The gap between what your report says and what comes out of your faucet is real, and it's measurable.
We buy it. We use it. We check the listing.
Every filter on our list was bought at retail and used at home. We do not run lab tests. Contaminant reduction is 35% of the score, and it is set by what NSF, IAPMO or WQA actually list for the filter. The score never adjusts for who has an affiliate program.
Read our full methodologyOur process
- 01
Every filter bought at retail. No manufacturer samples
- 02
Used at home before it is scored
- 03
Every certification claim checked against the NSF, IAPMO and WQA listings, with the date
- 04
Seven-category scoring, with contaminant reduction set by the certification listing
Stay informed
Water quality news and new reviews.
New filter reviews, EPA contamination alerts, and seasonal water testing reminders — delivered when it matters, not on a filler schedule. About twice a month.
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