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Aquapedia background February 11, 2014 Layperson's Guide to Water Conservation Water Conservation Tips Up Close and Personal: Water Use at Home

Water Conservation

Drought-tolerant landscaping reduces the amount of water used on traditional lawnsDrought-tolerant landscaping significantly reduces the amount of water needed to keep alive traditional lawns.

Water conservation has become a way of life throughout the West with a growing recognition that water supply is not unlimited.

Drought is the most common motivator of increased water conservation. However, the gradual drying of the West due to climate change means the amount of fresh water available for drinking, irrigation, industry and other uses must be used as efficiently as possible.

As the demand for water increases, officials recognize that greater progress is needed in water conservation as a critical part of the overall strategy for managing water resources efficiently. Cities, for instance, use about the same amount of applied water today as they did decades ago but can still accommodate population growth.

Initiatives

Higher water rates brought on by past droughts have encouraged more efficient water use practices by urban and industrial users. Wide fluctuations in water deliveries and availability to agricultural customers have forced farmers to find new ways to manage their supplies.

Urban water agencies are also realizing the economic benefits of water conservation. Water can be procured through conservation at a much lower cost per acre-foot than purchasing that same water in the marketplace. And conserving now can mean delaying into the future costly new expansion facilities for both drinking water supply and wastewater treatment—and that delay means millions of dollars in savings.

The California Department of Water Resources’ 2018 Water Plan Update projects an increase in urban water demand of as much as 7 million acre-feet per year by 2050, depending on population growth. During the same period, agricultural water demand is expected to decrease by 2 to 6 million acre-feet.

Dry lawn at State CapitolSome green turf around California's Capitol turned brown in the drought of 2022 as a state emergency ban on watering decorative grassy areas took effect. Source: California Department of Water ResourcesAt the same time, improving conservation and water-use efficiency, along with shifts in agriculture to permanent crops like nuts, will make it more difficult to reduce water use during droughts and periods of low supply, also known as “demand hardening,” according to the water plan update.

For homeowners, water conservation might mean replacing thirsty lawns with more drought-tolerant landscaping.

For businesses, it means assessing the water needs of industrial processes and looking for ways to reduce water use. For farmers, it means understanding the water needs of the crops they’ve chosen to cultivate and using irrigation practices that meet those needs.

Facing and Hotter and Drier Future

As the West becomes drier and warmer, accelerating the rate of water conservation assumes greater importance.

There are ongoing discussions regarding whether new storage capacity is needed to boost the state’s water system. And water districts have undertaken alternative ways to meet growing water demands, such as water marketing and water transfers, urban water conservation programs and increased reliance on groundwater banking and conjunctive use.

Technology such as variable-speed pumps and smart meters are also helping, researchers say. Farmers counter that there is still a need for more water storage and infrastructure.

Through the years, the Legislature has promoted water use efficiency through measures that required the installation of high-efficiency indoor plumbing appliances, provided financial incentives to utilities that implemented best management practices and spurred regulations for water efficiency and conservation standards for new residential and non-residential buildings.

Californians have collectively responded to the message of smart water use by exceeding goals for reduced per capita use.

Folsom Lake, a reservoir east of Sacramento, shows the effects of drought in 2021. Source: California Department of Water ResourcesTwo laws enacted in 2018 set targets for indoor and outdoor water consumption. The laws give California’s 400-plus urban retail water suppliers more flexibility than the strict cuts mandated during the 2012 to 2016 drought and allow state regulators to assess thousands of dollars in fines against jurisdictions that do not meet the goals.

The laws set an initial limit for indoor water use of 55 gallons per person a day in 2022, gradually dropping to 50 gallons per person by 2030.

During the 2022 drought, the State Water Resources Control Board adopted emergency drought regulations that banned the use of drinking water to irrigate decorative grass outside most businesses and institutions, along streets, and in most common areas of homeowners associations. Assembly Bill 1572, enacted in 2023, made the water-saving measure permanent. 

Also in 2023, the state water board proposed rules implementing the 2018 urban water conservation legislation. The regulations to make “water conservation a California way of life” would mandate cuts in water use among more than 400 cities and water agencies that supply the vast majority of Californians.

The implementation plan was strongly opposed, with water agencies arguing the large proposed cuts in water use between 2025 and 2035 would be too costly and difficult to implement. The nonpartisan Legislative Analyst’s Office echoed the criticism in a review of the proposal.

In response, the water board in March 2024 changed the rules to give water providers more years and flexibility to comply. Conservation advocates said the revisions undercut the urgency of preparing for longer and more severe droughts in the changing climate. 

Updated March 2024

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Aquapedia background February 11, 2014 Layperson's Guide to Water Conservation Water Conservation Tips Up Close and Personal: Water Use at Home
Publication December 19, 2022

Layperson’s Guide to Water Conservation
Updated in 2022

The 20-page Layperson’s Guide to Water Conservation provides an excellent overview of water conservation in California and the West, explaining how drought, climate change and population growth affect water supplies, and how city residents, businesses and farms are finding ways to use water more efficiently. 

  • Read more
Post April 24, 2014 All Things Drought Up Close and Personal: Water Use at Home Food Facts: How Much Water Does It Take to Produce ... ?

Water Conservation Tips
How to Save Water Inside and Outside of Your Home

California has a history of multi-year droughts and periodic years of abundant rain. The state’s Mediterranean climate means there is a short window for the rainy season. A robust Sierra Nevada snowpack is critical in helping to meet water demands during the long, hot summer. Severe drought occurred in the late 1970s, the late 1980s and the late 2000s.

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Post April 9, 2015 Water Conservation Tips Food Facts: How Much Water Does It Take to Produce ... ?
Child drinking a glass of water.

Up Close and Personal: Water Use at Home

Become more aware of how much water you are using at home by learning the typical water use for the various activities below.

Simply click the activity to find out.

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This item appears in:
  • Topic: Legislation — California and Federal
  • Topic: Regulations — California and Federal
  • Topic: Drought
  • Topic: Water Conservation
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