# Brondell Coral UC300 Three-Stage Under-Sink Filter

> WQA Gold Seal certified three-stage under-sink filter (NSF/ANSI 42, 53, 401, 372). One filter change per year. $80/yr running cost, $126 system price. Best budget under-sink pick.

- Brand: [Brondell](https://nontoxicnook.com/brands/brondell)
- Category: Kitchen › Small Appliances › [Water Filters](https://nontoxicnook.com/products/category/kitchen-water-filters)
- Price tier: $$
- Canonical: https://nontoxicnook.com/products/brondell-coral-uc300

## Why we chose it

The Coral UC300 earns the budget under-sink spot with WQA Gold Seal certification (NSF/ANSI 42, 53, 401, and 372 for lead-free materials) and one of the lowest annual running costs in the category at $80/yr. NSF/ANSI 372 certification covers the lead-free materials standard for the fittings themselves, not just the filter media. One filter change per year simplifies maintenance. The trade-off versus the Aquasana Claryum: no P473/PFAS certification, so it is not the right pick if PFAS in drinking water is the primary concern.

## Certifications

- NSF/ANSI 42
- NSF/ANSI 53
- NSF/ANSI 401
- NSF/ANSI 372

## Specs

- filter-type: Under-sink, 3-stage non-RO
- certifications: NSF/ANSI 42, 53, 401, 372 (WQA Gold Seal)
- pfas-removal: Not NSF P473 certified (reduces PFAS per NSF 53 but not to P473 standard)
- filter-change-frequency: Once per year
- annual-filter-cost: $80/yr
- system-price: $126
- installation: DIY under-sink
- source:nsf-ansi-53: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=Brondell
- image:source-url: https://www.amazon.com/dp/B0147QSRNE
- image:credit: Brondell, via Amazon product listing

## Where to buy

- [Brondell](https://www.brondell.com/coral-uc300-three-stage-under-counter-water-filter-system/)
- [Amazon](https://www.amazon.com/dp/B0147QSRNE)

Prices are deliberately omitted from this mirror — they go stale. Current prices and stock: https://nontoxicnook.com/products/brondell-coral-uc300

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