Water System Accessories
Add-ons that get more from your system
Accessories are the small upgrades that make a water system better to live with — a remineralization stage that restores taste to RO water, a TDS meter that proves your filter is working, a designer faucet, or a leak-detection shutoff. They're inexpensive relative to the system and easy to add.
7 products
Spout Filter Pack (Air + Water Filter Set)
Replacement filters that keep the Spout Monolith making its purest water
Spout Always Fresh Pitcher
Smart half-gallon pitcher with built-in UV-C that keeps water pure for days
iSpring FA15B Inline Remineralization Filter
Add minerals and a healthy pH back to RO water
HM Digital TDS-EZ Water Tester
Prove your filter is working in seconds
Waterdrop Designer RO Faucet
An upgraded dedicated faucet with a TDS readout
Watts FloodSafe Auto-Shutoff Connector
Cheap insurance against an under-sink flood
YOMIOUS Glass Water Bottles
Borosilicate glass bottles, 20 oz & 25 oz, silicone sleeve + bamboo lid.
4.3 out of 5 from 4,207 customer ratings (combined across the 20 oz and 25 oz colors)
How to Choose: Accessories Buyer's Guide
Match fittings before you buy
Most accessories use standard 1/4" quick-connect tubing, but confirm your system's port size and thread before ordering an inline add-on.
Remineralize RO water for taste
Reverse osmosis strips beneficial minerals along with contaminants. An inline calcium/magnesium cartridge restores a pleasant taste and a healthier pH for daily drinking.
Verify with a TDS meter
A $15 TDS meter is the cheapest way to confirm a filter or membrane is still doing its job. Track the number over time and replace media when it climbs.
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