Finished Water Storage and Quality Concerns

By Kelly A. Reynolds, MSPH, PhD

The municipal drinking-water Distribution System

The network of pipes leading from a treatment plant to customers’ plumbing systems.

“>distribution system

is a complex delivery network designed to provide adequate Potable water

Water that is safe for drinking and cooking; water of a quality suitable for drinking Water which is considered safe and fit for human consumption, culinary and domestic purposes and meets the requirements of the health authority having jurisdiction.

“>potable water

needs to entire communities. Much information has been published relative to concerns of the Distribution System

The network of pipes leading from a treatment plant to customers’ plumbing systems.

“>distribution system

integrity and ability to provide safe, consistent water to consumers. Needs for infrastructure improvements, rapid response to main breaks and leaks, Biofilm

A population of various micro organisms, in a layer of slime and excretion products, attached to a surface such as that inside a water storage vessel. Also known as biological film or microbial film, the construction of the layer may offer protection to bacteria within the film against the action of sanitizers and disinfectants.

“>biofilm

control and preventing intrusion events, dead legs and pressure losses, are just some of the prevalent Water quality

The condition of water with respect to the amount of impurities in it.

“>water quality

delivery issues. Less common are discussions around Safe water

Water that does not contain harmful bacteria, toxic materials, or chemicals, and is considered safe for drinking.

“>safe water

storage prior to delivery. Although industry standards and guidelines exist, maintaining Water quality

The condition of water with respect to the amount of impurities in it.

“>water quality

over prolonged storage presents additional challenges and uncertainties for end users.

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