Watermill Express

Filtration Process

Watermill Express publishes a 12-step Water Perfection process. Treatment stages are listed first. The last four lines are operations and support items from the same page.

1. 5-micron filter

   Removes or lowers suspended solids larger than 5 microns.

2. Ion exchange

   Watermill Express states this stage treats hardness minerals such as calcium, magnesium, and iron, where applicable.

3. Granulated activated carbon

   Watermill Express states this stage treats PFAS, lead, chlorine, pesticides, herbicides, trihalomethanes, other dissolved gases, color, and odor.

4. 1-micron filter

   Removes or lowers suspended solids larger than 1 micron.

5. Reverse osmosis

   Watermill Express states this stage treats PFAS, arsenic, nitrates, chromium-6, uranium, chemical contaminants, and other material.

6. Ozonation

   Watermill Express states this stage kills microorganisms, including viruses, bacteria, algae, and spores.

7. Taste and odor filter

   Removes residual taste and odor.

8. Ultraviolet disinfection

   Watermill Express states this stage kills remaining microorganisms, including viruses, bacteria, algae, and spores.

9. Direct-to-consumer technology

   Watermill Express describes automated production and dispensing that avoids human contact with the water.

10. 24-hour monitoring

    Watermill Express states each unit is computer monitored around the clock, with a shut-down system meant to stop a sale the operator considers inferior.

11. 100% freshness guarantee

    Listed on the Watermill Express process page as a freshness guarantee.

12. Customer service

    The page lists a customer service line at 1-800-487-9643.

As stated on Watermill Express's 12-step process page.