Statistical Terms Glossary

Waste water is used water, typically discharged into the sewage system. It contains matter and bacteria in solution or suspension

Land not used or not useable.; A barren or empty area of land.; Waste land is land that is naturally unfavourable for land‐associated human activities - it cannot be used for cultivation under any conditions.

Waste—water treatment is the process to render waste water fit to meet environmental standards or other quality norms. Three broad types of treatment may be distinguished: mechanical, biological and advanced

Annual quantity of wastewater generated in the country, in other words, the quantity of water that has been polluted by adding waste. The origin can be domestic use (used water from bathing, sanitary, cooking, etc.) or industrial wastewater routed to the wastewater treatment plant. It does not include agricultural drainage water, which is the water withdrawn for agriculture but not consumed and returned to the system.

Annual quantity of wastewater generated in the country, in other words, the quantity of water that has been polluted by adding waste. The origin can be domestic use (used water from bathing, sanitation, cooking, etc.) or industrial wastewater routed to the wastewater treatment plant. It does not include agricultural drainage water, which is the water withdrawn for agriculture but not consumed and returned to the system

Quantity of generated wastewater that is treated in a given year and discharged from treatment plants (effluent). Wastewater treatment is the process to render wastewater fit to meet applicable environmental standards for discharge. Three broad phases of traditional treatment can be distinguished: primary, secondary and tertiary treatment. Discharge standards vary significantly from country to country, and therefore so do the phases of treatment. For purposes of calculating the total amount of treated waste water, volumes and loads reported should be shown only under the highest"" type of treatment to which it was subjected. ""

Water which is of no further immediate value to the purpose for which it was used or in the pursuit of which it was produced because of its quality, quantity or time of occurrence. However, wastewater from one user can be a potential supply to another user elsewhere.; The spent or used water from homes, communities, farms and businesses that contains enough harmful material to damage the water's quality.

Low weight for height.

List of securities singled out for special surveillance by a brokerage firm or exchange or other self regulatory organization to spot irregularities. Firms on the list may be takeover candidates, companies about to issue new securities or those that seem to have attracted an unusually heavy volume of trading activity.

The difference between the total amount of water withdrawn from aquifers and the total amount charged artificially or injected into aquifers.

A process that places the findings, outputs and recommendations of water accounting into a broader framework comprising governance, institutions, public and private expenditure, legislation, services delivery and the wider political economy of specified domains.

Balance of inflow and outflow of water per unit area or unit volume and unit time taking into account net changes of storage.

Estimate of the size of future water resources in an aquifer, catchment area, or geographical region, which involves an evaluation of all the sources of supply or recharge in comparison with all known discharges or extractions.; A summation of inputs, outputs, and net changes to a particular water resource system over a fixed period.; (1) (Hydrology) An accounting of the inflows to, the outflows from, and the storage changes of water in a hydrologic unit or system. Also see Water Balance. (2) (Conservation and Planning) The calculated amount of water a household should use based on the type and number of fixtures, landscape requirements, and size of family.

An inland waterways ferry designed to transport passengers only on a public scheduled service.

(water rate, irrigation rate) A charge levied on the beneficiaries for supplying irrigation water. It may be based on or cover one or more of the following: (i) O&M expenses; (ii) depreciation charges for the whole or part of the project and O&M expenses; (iii) other criteria which may cover, exceed or not cover the working expenses and interest on investment.

Water conservation refers to the preservation, control and development of water resources, both surface and groundwater, and prevention of pollution

The part of water withdrawn from its source for use in a specific sector (e,g, for agricultural, industrial or municipal purposes) that will not become available for reuse because of evaporation, transpiration, incorporation into products, drainage directly to the sea or evaporation areas, or removal in other ways from freshwater resources.

The physical control of water by measures such as conservation practices on the land, channel improvements, and installation of structures for reducing water velocity and trapping sediments.

Anthropogenic modifications or controls set in place in order to control water movement.

The continuous cycling of water between the earth and the sky.; The natural movement of water through the ecosystem. Minimally this includes falling from clouds as precipitation, melting (if snow), and evaporating from rivers, lakes and oceans.

The ratio between effective water use and actual water withdrawal. In irrigation,; It represents the ratio between estimated plant water requirements (through evapotranspiration) and actual water withdrawal.

All financial contributions to be borne by the users (or possibly their farmer in the case of renting). The fees pay for the supply of water and accompanying services.