Page 72 - Yucaipa Valley Water District

October 2018

steel reservoirs. The State Water Project system considers lakes, such as Shasta Lake and Folsom Lake to be
water storage reservoirs.
Runoff - Water that travels downward over the earth's surface due to the force of gravity. It includes water
running in streams as well as over land.
Santa Ana River Interceptor (SARI) Line - A regional brine line designed to convey 30 million gallons per day
(MGD) of non-reclaimable wastewater from the upper Santa Ana River basin to Orange County Sanitation District
for treatment, use and/or disposal.
Secondary treatment - Biological wastewater treatment, particularly the activated-sludge process, where
bacteria and other microorganisms consume dissolved nutrients in wastewater.
Service Connection - The water piping system connecting a customer's system with a District water main
beginning at the outlet side of the point of responsibility, including all plumbing and equipment located on a parcel
required for the District's provision of water service to that parcel.
Sludge - Untreated solid material created by the treatment of wastewater.
Smart Irrigation Controller - A device that automatically adjusts the time and frequency which water is applied
to landscaping based on real-time weather such as rainfall, wind, temperature, and humidity.
South Coast Air Quality Management District (SCAQMD) - Regional regulatory agency that develops plans
and regulations designed to achieve public health standards by reducing emissions from business and industry.
Special district - A form of local government created by a local community to meet a specific need. Yucaipa
Valley Water District is a County Water District formed pursuant to Section 30000 of the California Water Code
Supervisory Control and Data Acquisition (SCADA) - A computerized system which provides the ability to
remotely monitor and control water system facilities such as reservoirs, pumps, and other elements of water
delivery.
Surface Water - Water found in lakes, streams, rivers, oceans, or reservoirs behind dams. In addition to using
groundwater, Yucaipa Valley Water District receives surface water from the Oak Glen area.
Sustainable Groundwater Management Act (SGMA) - Pursuant to legislation signed by Governor Jerry Brown
in 2014, the Sustainable Groundwater Management Act requires water agencies to manage groundwater
extractions to not cause undesirable results from over production.

Transpiration - The process by which water vapor is released into the atmosphere by living plants.
Trickling filter - A biological secondary treatment process in which bacteria and other microorganisms, growing
as slime on the surface of rocks or plastic media, consume nutrients in wastewater as it trickles over them.
Underground Service Alert (USA) - A free service (https://www.digalert.org) that notifies utilities such as water,
telephone, cable and sewer companies of pending excavations within the area (dial 8-1-1 at least 2 working days
before you dig).

Urban runoff - Water from city streets and domestic properties that carry pollutants into the storm drains, rivers,
lakes, and oceans.
Valve - A device that regulates, directs, or controls the flow of water by opening, closing or partially obstructing
various passageways.
Wastewater - Any water that enters the sanitary sewer.

Water Banking - The practice of actively storing or exchanging in-lieu surface water supplies in available
groundwater basin storage space for later extraction and use by the storing party or for sale or exchange to a
third party. Water may be banked as an independent operation or as part of a conjunctive use program.
Water Cycle - The continuous movement water from the earth's surface to the atmosphere and back again.
Water Pressure - Water pressure is created by the weight and elevation of water and/or generated by pumps
that deliver water to customers.

Yucaipa Valley Water District - February 5, 2019 - Page 72 of 74