Water conservation

thumb|The three chasing arrows of the universal recycling symbol thumb|Municipal waste recycling rate (%), 2015 Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh

thumb|Portuguese Cistern (Mazagan)|Portuguese cistern (Mazagan), [[El Jadida, Morocco (1514)]] thumb|The difference between a cistern and a well is in the source of the water: A cistern collects [[fresh water where a well draws from groundwater.]]

in agriculture and gardening

thumb|right|Bark chips applied as mulch A mulch is a layer of material applied to the surface of soil. Reasons for applying mulch include conservation of soil moisture, improving fertility and health of the soil, reducing weed growth, and enhancing the visual appeal of the area.

surface made of synthetic fibers, simulating turf grass, frequently used for athletic playing fields

thumb|right|260px|Water cycle of the Earth's surface, showing the individual components of transpiration and evaporation that make up evapotranspiration. Other closely related processes shown are runoff and [[groundwater recharge.]]

thumb|An batter (walls)|inclined stacked wall of gabions supporting a multilane roadway thumb|Gabions as X-ray protection during [[customs inspection]]

hydroelectric energy storage station using two water reservoirs connected with a pump and a turbine

thumb| axons|Giant axons of the [[longfin inshore squid (Doryteuthis pealeii) were crucial for scientists to understand the action potential.]]

process by which waste paper is turned into new paper products

container for storing water

thumb|Left: greywater sample from an office building. Right: Same greywater after treatment in membrane bioreactor

A tall, cylindrical ceramic container that removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process

toilet using natural processes to decompose matter

accumulation of rainwater for reuse

policies for sustainable development of water use

electric hand-drying machine

process of converting wastewater into water that can be reused for other purposes

kibbutz in Israel

process of infiltration and percolation of water in the ground and aquifers

overview about computer recycling

form of rainwater runoff management

thumb|An example of xeriscaping outside the United States Capitol in Washington, D.C.|Washington, DC thumb|right|The Xeriscape Demonstration Garden at the headquarters of Denver Water in Denver, Colorado Xeriscaping is the process of landscaping, or gardening, that reduces or eliminates the need for irrigation. It is promoted in regions that do not have accessible, plentiful, or reliable supplies of fresh water and has gained acceptance in other regions as access to irrigation water has become limited, though it is not limited to such climates. Xeriscaping may be an alternative to various type

method of reusing or reprocessing used clothing, fibrous material and rags

small dam

form of glacier grafting technique that creates artificial glaciers, used for storing water in the form of conical shaped ice heap

toilet that operates without flush water

overview of water scarcity in Africa

roads built with water pervious materials to limit surface runoff

method of utilizing the rubble

type of man-made water body, filled by condensation or precipitation

vegetative strip beside the carriageway of a road or between two roads

rainwater harvesting technique

thumb|A bioretention cell, also called a rain garden, in the [[United States. It is designed to treat polluted stormwater runoff from an adjacent parking lot. Plants are in winter dormancy.]]

thumb|Runoff from the vicinity flows into an adjacent bioswale Bioswales are channels designed to concentrate and convey stormwater runoff while removing debris and pollution. Bioswales can also be beneficial in recharging groundwater, reducing flooding and erosion, and creating a valuable habitat for pollinators.

water supply and distribution in Africa

desalination technique powered by solar energy

desert greening project, Saudi Arabia

the ability to which a plant maintains its biomass production during arid or drought conditions

open hardware plastic recycling project

instrument

Desert irrigation by floodwater dam

The Wadi Rum Consultancy of Wadi Rum Organic Farms

gallons per capita per day

consequences of climate change

Living Machine is a trademark and brand name for a patented form of ecological wastewater treatment.

type of recycling for vehicles of all types

showering technique that saves water and time

policy-making processes and legislation that affect water resources