Recycled water is defined as water that has been treated to a 'fit for purpose' standard for a specific application. The following water classes can all be used to replace potable water and, if used in an EPA-approved fit-for-purpose application, can be classified as recycled water:

The California Water Code defines recycled water as “water which, as a result of treatment of waste, is suitable for a direct beneficial use or a controlled use that would not otherwise occur.” Water recycling allows water managers to match water quality to specific reuse applications. This reduces the amount of fresh water required for non drinking uses, ensuring that the best and purest sources of water will be reserved for the highest use - public drinking water.

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Yes, a full supply of recycled water is available during a drought and generally is not restricted for outdoor use during normal water supply conditions or droughts. During prolonged droughts, retail water providers have often restricted the use of drinking water (potable water) for outdoor use and landscape irrigation. This may result in costly replacement of plant materials. The continuous, year-round availability of recycled water is an economic and environment benefit.

Water recycling is a safe way to preserve our natural water resource. In addition, recycled water projects are designed and operated to protect public health. Careful monitoring by responsible local health authorities and water quality control agencies also ensures that the City of San Diego produces a highly treated, filtered and disinfected product that meets the State Department of Health Services criteria.

The City has a recycled water distribution system to deliver recycled water to customers. Recycled water must be conveyed in a system separate from the existing water or sewer systems. This system has been built along routes that are cost effective with the intent to maximize the use of recycled water.

In southern California, the Irvine Ranch Water District has distributed recycled water for over thirty years. Recycled water is used in high-rise office buildings for toilet and urinal flushing. In Los Angeles and Orange counties, recycled water is injected into groundwater storage basins to prevent saltwater intrusion into the basins near the coastline.

Redwood City’s recycled water project is for landscape irrigation and industrial uses only. However, indirect drinking water reuse occurs in many communities as recycled water from an upstream community rejoins a river and becomes part of a downstream water supply. In addition, several milestone groundwater recharge projects in Southern California have an excellent track record of success, with over 30 years of history and no outbreaks of waterborne disease linked to recycled water.

Redwood City will build a new distribution system for the water from the recycling plant. The water will be used primarily in the Redwood Shores and Greater Bayfront areas for public and large landscape accounts this is referred to as Phase One of the project. A pipeline will be constructed from the SBSA facility to areas requesting recycled water. See Project Maps.

Use of recycled water by Home Owner Associations in the Redwood Shores area is not mandatory. See Council policy on mandatory use for existing residential / HOA customers under Project History. Pursuant to state law, the City will lay a separate set of purple colored pipes to carry the recycled water. There will be no direct interconnections or cross connections between the two water systems. These systems will be regularly monitored to ensure safety.

The Redwood City Public Works Services Department will provide an extensive program of support services information as well as direct assistance to recycled water customers. Workshops in successful landscape management, with specific suggestions on using recycled water most effectively. Reimbursement for some irrigation equipment upgrades or adjustments. Determine on a sits by site basis. Recycled water can play a major role in the successful management of turf grasses in our area.

Recycled water is already being used in a wide range of applications, including the irrigation of agriculture, parklands and golf courses.

There are a number of residential developments planned for Melbourne, which will have dual pipe facilities enabling the use of recycled water for non-drinking applications such as toilet flushing and garden watering.

Recycled water has many benefits. It reduces the demand on fresh water and makes use of a precious resource that currently goes to waste. Water recycling schemes protect the environment by reducing the discharge of treated effluent to bays and the ocean.

In most cases around metropolitan Melbourne, the source for recycled water is one of Melbourne Water's two sewage treatment facilities - the Eastern Treatment Plant at Bangholme and the Western Treatment Plant at Werribee, which provide large amounts of recycled water all year round. However, in some cases local treatment plants run by the metropolitan retail water companies also provide recycled water.