- how water is measured, equal to about 326,000 gallons
- a share or portion.
- a structure used to transport water from remote areas to large urban centers.
- an underground space where water collects.
- artesian aquifer
- a confined aquifer where water is contained under great pressure between two impermeable layers.
- a single-celled microscopic organism.
- a wetland covered by a shallow layer of water, or no visible water at all, and containing ground that is made of sphagnum moss.
- bottom life
- animals that live on the bottom of a healthy body of water.
- brackish water
- Refers to water with a mineral content in the general range between freshwater and seawater.
- California Aqueduct
- a 444-mile structure that transports water from the San Francisco/San Joaquin Delta to Southern California.
- Central Basin Aquifer
- an aquifer that underlies the Southern California communities of Central Basin Municipal Water District within its territory.
- Clean Water Act of 1972
- a law that requires the federal government to regulate the quality of the nation’s water supply.
- Colorado River Aqueduct
- a 242-mile structure that transports water from the Colorado River to Southern California.
- Comprehensive Environmental Response, Compensation and Liability Act of 1980 (Superfund)
- a law enacted by the federal government to clean up hazardous waste sites that threaten groundwater resources.
- water vapor or gas forming a cloud prior to becoming a liquid again.
- confined aquifer
- an aquifer found between two impermeable layers.
- saving water and other natural resources.
- a structure used to hold back the flow of water.
- a process that removes dissolved salts from salty or brackish water.
- a structure used to confine or control water.
- a process in which chlorine and other chemicals are added to water to kill harmful microorganisms.
- diversion canal
- a structure used to change the directional flow of water.
- Salt removal from sea or brackish water.
- an area where a river empties into an ocean or sea.
- water turned into a vapor or gas and rising into the atmosphere.
- a process that separates small particles from water by using a porous barrier to trap the particles and allowing the water through.
- a vertebrate (animal with a spine) that lives in water.
- a process in which a chemical such as alum or ferric chloride is added to water to cause dirt and other small particles to join together into “floc” or large clumps.
- water that is stored in aquifers. Aquifers are replenished naturally with rainfall or snowpack or artificially through recharge basins with imported or recycled water.
- hydrologic cycle
- a three-step process by which Earth is continuously able to recycle its water.
- imported water
- Water transported to our region from Northern California or the Colorado River Aqueduct.
- a raised structure used to contain water and prevent flooding.
- Los Angeles Aqueduct
- a 335-mile structure that transports water from the eastern Sierra Nevada to the City of Los Angeles.
- mangrove swamp
- tropical and subtropical saltwater swamp that contains a species of saltwater tolerant tree or shrub.
- a wetland that is wet throughout the year and found at the edge of a river, lake or pond.
- non-potable water
- Water not suitable for drinking. Can be used for landscaping, irrigation and industrial uses.
- non-point pollution source
- pollution that comes from various sources not easily identified.
- Ogalla Aquifer
- the largest aquifer in the United States, located in the Midwest.
- a living plant or animal.
- a gas upon which most life depends.
- potable water
- Water that is suitable for drinking.
- peak flow
- highest flow level of a body of water.
- a measurement of how freely water moves between pieces of soil and rock.
- microscopic free-floating green plants.
- point pollution source
- pollution that comes from an easily identified source.
- a measurement of the amount of water held between pieces of soil and rock.
- Porter-Cologne Water Quality Act
- a California law that gives the State Water Resources Control Board ultimate authority over water rights and water control policy.
- water falling to Earth as rain, sleet, snow or hail.
- a process in wastewater treatment where metal screens are used to remove large objects and chunks of debris.
- primary treatment
- the first process in wastewater treatment where solid matter is removed.
- reclaimed or recycled water
- cleaned wastewater that can be reused for non-drinking purposes.
- recycled water
- Domestic wastewater purified through primary, secondary and tertiary treatment. Recycled water is ideal for most non-drinking water purposes such as landscaping, irrigation and industrial uses.
- Safe Drinking Water Act of 1974
- a law enacted by the federal government that regulates the nation’s drinking water.
- saltwater marsh
- a wetland that is wet throughout the year and found at the edge of a saltwater body.
- secondary treatment
- the second process in wastewater treatment where microorganisms are used to digest organic particles.
- mud, sand or gravel that has settled to the bottom of a body of water.
- a process in which gravity causes small particles to settle to the bottom of a tank or basin.
- a mostly dry region that gets a small amount of precipitation.
- see Comprehensive Environmental Response, Compensation and Liability Act.
- surface water
- a body of water easily seen as it flows downhill to where it collects.
- a wetland that can alternate between being wet and dry for periods of time throughout the year.
- tertiary treatment
- the third process in wastewater treatment where remaining small particles are filtered out of the water before disinfection.
- cloudy or muddy looking water caused by suspended or stirred up particles in the water.
- Ultra-Low-Flush Toilet
- Often referred to as ULFTs, these fixtures require only 1.6 gallons of water per flush. These conservation devices save a typical household 7,900 to 21,700 gallons of water each year.
- unconfined aquifer
an aquifer found close to Earth’s surface that allows water to seep into it.
- water conservation
- The best tool for stretching water supplies without making unnecessary investments in infrastructure, shifting available water resources or negatively impacting the environment.
- an area of land where water drains from the higher elevation points into a larger body of water or into the soil.
- water table
- the top surface of a body of groundwater.
- a hole dug into the ground that begins at the surface and ends where it reaches the water.
- West Coast Basin Aquifer
- an aquifer that underlies the Southern California communities of West Basin Municipal Water District within its territories.
- an area of land that is wet for a period of time during the year.
- microscopic free-floating animals.