3M water filtration system common questions

Frequently asked questions (FAQ) about using the Water Filtration System

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Residential Water Filtration Frequently Asked Questions

  • Why use a water filtration system? Isn't boiling water safer?
    Many families maintain the quality of drinking water by boiling, believing that boiling water should be able to achieve disinfection. While 15 to 20 minutes of boiling may kill intestinal bacteria and viruses, it cannot eradicate the taste of chlorine. Also, the sediment and lead in the water remain even after boiling the water, leading to harmful effects on the human body over time.
  • Choose a 3M™ Residential Water Filtration system based on the filtration capacity & performance, type of harmful substances, family size and usage. You can choose the appropriate model according to the water quality of the area, the status and service life of the water pipes of the buildings and residences, and size of your household to achieve the most effective and economical filtering effect. Generally, models with an effective filtration capacity of less than 1,500 liters are suitable for small households (2-4 people) for 6-9 months; models with an effective filtration capacity of more than 1,500 liters can be used by small households for one year.
  • The 3M™ water filter cartridge is designed with a fully enclosed filter cartridge that requires no cleaning. Its design prevents cross-contamination by avoiding contact with the inside of the cartridge and ensures the effectiveness of its filtration function.
  • The 3M™ Residential Water Filtration System (3M™ AP Easy series and DWS2500T-CN series) has two patented designs to facilitate the replacement of filter cartridges:

    • Built-in Bypass Valve, no need to turn off the water system when replacing the filter.
    • Sanitary Quick Change (SQC)

    how to install a new 3M water filter cartridge

    • 3M™ Residential Water Filtration Systems meet the Filtration Systems Standards of 42 (Aesthetic Effect) and 53 (Health effect) of the National Sanitation Foundation (NSF International).
    • There is NSF mark labelled on the NSF International certified products such as 3M™ AP Easy Series and DWS2500T-CN Water Filtration System.
    • You can browse the website of the National Sanitation Foundation (NSF International) to check the types of filter substances in the water filtration system, or through the label affixed to the water filtration system, to check filter substances and other parameters of the relevant system.
  • The recommended operating temperature of the 3M™ household water filtration system is 4.4 to 37.8 degrees Celsius. Therefore, it is not recommended to filter hot water which may affect the system’s operation.
  • Please refer to the 3M™ Residential Water Filtration System package or instructions for the appropriate water pressure range. If the water pressure at the installation site exceeds 80 psi, a pressure reducing valve must be installed at the front of the water filtration system, and the pressure relief switch shall be inspected and maintained every 12 months. If you do not know how to choose, install or maintain the pressure reducer, please contact a licensed and qualified technician to test whether the water pressure in your home is normal and stable.
  • Connecting to the tap water from the Hong Kong Water Supplies Department (or Macau Water Supply Company) is recommended for 3M™ Residential Water Filtration System. If you suspect or find that the water source is contaminated or without any disinfection treatment, please do not use this product. If you have any questions, please call our company (tel:+852-2806-6111).
  • All under-the-sink series must be installed by a licensed plumber and qualified technician.
    • The transparent crystals or white precipitates found in the constant temperature water boiler, commonly known as limescale, usually appear after boiling the water. Limescale is the ions of magnesium and calcium in water that evaporate during the heating process, and the water filtration system containing activated carbon will reduce the cations in the water, while heat will solidify the solidification of the anions in the filtered water to form the limescale visible to the naked eye. This is a normal physical characteristic of water and is not harmful to human health. It is recommended to sanitize the water pot regularly with hot water pot cleaner to reduce the formation of limescale.
    • 3M™ Residential Water Filtration Systems effectively filter out particulate, rust, chlorine & odors, heavy metals and cysts, while retaining beneficial minerals such as magnesium and calcium. If you want to limit the formation of limescale in water, or remove the minerals that form limescale in water, you can use the limescale inhibiting filtration technology. Please call us at tel:+852-2806-6111 for more information.

Other Information About 3M Water Filtration Solution

  • Learn more about residential drinking water and domestic water filtration solutions. Getting suitable water filtration products according to your household requirements.

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Customer Service

If you have any questions about 3M household and commercial water filtration product model recommendations, applications and technical support, please contact us.

Enquiry & Technical Support Hotline
+852 2806 6111

Enquiry & Technical Support Hotline
+852 2806 6111

Service Hour: Monday – Friday
AM 8:30 - PM 5:30
Fax: +852 2807 1308