Rain Barrels

Use a rain barrel (also known as a rainwater tank) to collect runoff from your roof—it saves having to use water from the city, and is a gesture for the environment as since it helps reduce runoff and the overuse of water in the hot summer months when water restrictions may be in place. Barrels may also come in handy if you set up your own greenhouse, since having a large source of water will help to keep the temperature warmer in the cooler months.

In some places, rain barrels are used to collect rain during the rainy season for later use in periods of drought or when rainfall is extremely limited. More commonly, home owners or gardeners working on a communal project (such as a school or church garden) will set up one or two small rain barrels for limited use in the garden, or as a back-up for times when restrictions are in place. Other applications include collecting runoff for use in washing machines, toilets, or as a source of drinking water (although more precautions are necessary if the water is going to be consumed).

Rain barrels come in a variety of shapes, including (but not limited to) the traditional barrel construction. Tanks are usually made of an opaque material to reduce the amount of sunlight getting through—and lined with plastic for durability. Using an opaque material prevents or reduces the likelihood of problems with algae. When comparison shopping, check the lid of the rain barrel you are considering purchasing. It is crucial that an excellent seal is in place to prevent mosquito larvae from breeding in the rain barrel.

Rain barrels come in all sorts of designs—from purely functional to decorative. Some mimic the look of large clay planters, with a space for plants at the top. The design may also include down spouts, spigot, and a small garden hose.
Some cities offer a subsidy for citizens who install rain barrels, sometimes reducing the cost from several hundred dollars by up to half or more.
It is also possible for DIY enthusiasts to construct a rain barrel from scratch, using food-grade drums or other suitable containers. Some companies also sell kits to help you construct your own water barrel using materials that can either be bought or recycled.