BuyDirectWaterRilters.com, FreshWaterSystems.com and eBay all offer Watts water filtration products. Each website offers products such as filters, filter kits and reverse-osmosis systems, as of 2015.
BuyDirectWaterFilters.com offers free shipping on all orders over $99 in the contiguous United States. The site allows customers to shop by category and allows returns for up to 365 days.
Purchases made on FreshWaterSystems.com come with free shipping on most orders over $79. The site allows customers to refine their searches by category, price or relevance.
Customers purchasing water filtration products on eBay have the option of bidding for products auction style or purchasing items immediately by using the Buy It Now feature when offered by the seller.