Self-back flushing filtration assembly

A method comprising:

• operating a self-back flushing filtration assembly to filter untreated water, the self-back flushing filtration assembly including:
• an inner container configured to receive treated water by way of a filter cartridge, wherein the filter cartridge comprises filter media to capture particles and a first seal;
• an outer container configured to hold the untreated water and sleeve the filter cartridge and the inner container;
• the inner container and the filter cartridge moveably positioned within the outer container to compress and draw the untreated water through the filter media within the filter cartridge by way of a filter cap, wherein the filter cap or the outer container comprises a second seal, wherein the untreated water is sealed between the filter cartridge and a cavity of the outer container by way of the first seal on the filter cartridge;
• and
• the filter cap movably positioned within the cavity of the outer container to draw the treated water from the inner container or a treated portion of the filter media, through the filter media of the filter cartridge, wherein the cavity is sealed by the second seal on the filter cap or the outer container, and
• operating the self-back flushing filtration assembly to draw the treated water from the inner container or treated portion of the filter media, through the filter media of the filter cartridge, thereby dislodging captured particles from the filter media.