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1) How can people ensure their homes are using water efficiently?
Riggs Eckelberry: There are a number of things one can do, such as ensuring they have no leaky faucets or pipes with regular maintenance, having drought-tolerant plants that require less water, investing in a pool cover to reduce evaporation and in turn reducing refill water, and installing water-saving devices like low-flow shower heads and toilets.
2) Is there an ideal way to irrigate home gardens?
RE: An excellent form of irrigation is a drip irrigation system. These are very efficient systems that use less water, are run by timer, and thus save money. The absolute ideal would be to have a home greywater recycling system, which takes water from places like kitchen sinks and showers, cleans it, and can then repurpose it for some types of irrigation. Very cool little systems!