Water and wastewater services for Kent, Sussex, Hampshire and the Isle of Wight
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Glossary of terms

The list below contains some of the technical terms and abbreviations which often appear in our range of reports.

Term Definition
AONB Area of Outstanding Natural Beauty.
Asset A capital cost item.
Audit A process whereby an aspect of operations is critically evaluated from legal and good practice standpoints.
Benchmarking A process allowing comparison of one data set (e.g. company performance) to another (e.g. industry performance).
Biodiversity The variety of life forms around us. The term covers all lifeforms, from mammals, birds, reptiles and amphibians to plants, fungi and micro-organisms including bacteria and viruses.
Consent A permit defining levels of legally allowed operational performance.
Controlled Waters Watercourses under Environment Agency control.
CO2 Carbon dioxide.
CSO Combined sewer overflow.
DEFRA Department for Environment, Food and Rural Affairs. Now holds responsibility for the guidelines for Conservation, Access and Recreation reporting.
DETR Department of the Environment, Transport and the Regions, former department responsible for the guidelines for Conservation, Access and Recreation reporting. Responsibilities moved to DEFRA.
DWI Drinking Water Inspectorate. The government body which regulates the water industry, ensuring compliance with Drinking Water Standards.
EA Environment Agency.
EMS Environmental Management System.
Environmental Management Champions Those with responsibility for (a component of) Environmental Management and its communication to a wider audience within the organisation.
Final Effluent Liquid wastewater at treatment end point.
HSE Health and Safety Executive.
Intranet Internal company-wide website available to staff only.
KPI Key Performance Indicators.
kWh Kilowatts per hour; a unit of energy.
Loss Loss to a business is a negative consequence that can be financial, reputational, environmental, of time or resources etc.
Management Control Management decisions and actions undertaken to prevent losses occurring.
Management System A systemised approach to management control (usually involving formal documentation and manuals containing operational instruction).
Ml Megalitre. One million litres, a volumetric measurement.
Ml/day Megalitres per day.
NGOs Non-government organisations.
Ofgem Office of Gas and Electricity Markets.
Ofwat Office of Water Services, the government body with legal responsibility to regulate the water industry.
Risk The likelihood of an incident occurring (with associated potential to cause loss).
Save-a-Flush bag  The water-displacement device used in the toilet cistern to reduce the amount of water used when flushing.
Screening Opinion Technical opinion of potential environmental impact of a proposed development submitted to local planning authority.
Settlement tank These are used to settle-out solid matter from liquid wastewater at several stages in the treatment process.
Sludge recycling Use of the bioproduct from wastewater treatment as a soil conditioner and fertiliser.
SSSI Site of Special Scientific Interest.
Stakeholders Those that may affect or be affected by particular decisions, activities or operations.
SUDs Sustainable Urban Drainage Systems.
Target A level of performance set for attainment.
Turbidity A measure of the opaqueness of a liquid.
UKWIR UK Water Industry Research Limited.
Wash water recovery Where excess water used in treatment works for water supply is recycled back into the treatment works.
Wastewater treatment Involves separation of solid matter from wastewater followed by biological (and sometimes other kinds of) treatment of liquid.
Water UK The industry association which represents UK water and wastewater services suppliers at national and European level.
WSW Water Supply Works.
WTW Wastewater Treatment Works.
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