Producing high-quality PFAS-filtered water is only half the equation — maintaining that quality through appropriate storage and handling practices completes the chain of protection. Improper storage or handling can reintroduce contamination or allow microbial growth in filtered water.
RO Storage Tank Management
Reverse osmosis systems store filtered water in pressurized tanks until drawn. The tank’s rubber bladder is in contact with stored water, and degraded bladders can impart taste and odor to stored water. Tanks should be sanitized annually as part of routine maintenance, and tank pressure (in the empty air side) should be checked periodically — improper pressure affects how completely stored water can be drawn and may indicate bladder failure requiring tank replacement.
Pitcher Filter Storage
Pitcher filters store filtered water in open reservoirs exposed to ambient air, potentially allowing airborne dust and microorganisms to enter the stored water. Keeping the pitcher lid closed when not in use, refrigerating the pitcher (particularly in warmer climates), and cleaning both the pitcher reservoir and lid weekly prevent microbial growth in stored filtered water. Using filtered water promptly rather than storing it for days reduces the opportunity for quality degradation.
Filling Containers With Filtered Water
Using clean, food-safe containers for transporting filtered water from the filter source to other locations (for cooking, pet water, or travel) maintains water quality. Containers should be washed regularly and allowed to dry completely before refilling to prevent mold growth. Boiling filtered water is unnecessary and undesirable — the boiling process concentrates any residual PFAS that passed the filter, and properly filtered water does not need further treatment for safe drinking use.