Three-pot method

Method for treating water by sedimentation and decanting, using three pots (10)

Total coliforms

Total number of coliform bacteria (which come from faecal matter and other sources) (2)

Transmission mains

Pipes that take treated water from a treatment plant to service reservoirs (1)


Cloudiness caused by a large number of tiny particles in a liquid (2)

Unprotected water sources

Water sources that do not have protective structures to stop them being contaminated (3)


Very small infectious particles that are not capable of independent existence and therefore not classed as organisms (2)

Vulnerable (people)

Groups of people who are more likely to be harmed by lack of access to safe water through not being able to buy thenwater they need (13)

Waste stabilisation ponds

System of ponds to treat wastewater using sunlight and wind (11)

Water-based diseases

Diseases caused by parasites that spend part of their lifecycle in water (2)

Waterborne diseases

Diseases caused through the ingestion of water contaminated by human or animal faeces containing pathogens (2)

Water emergency

Event that disrupts the normal supply of water (14)

Water-related diseases

Diseases transmitted by insects that breed or feed in or near water (2)

Water safety plan

Plan that proactively seeks to identify and control risks to safe and continuous water supply (8)

Water table

Top level of groundwater below the land surface (3)

Water tariff

Price that is set for water (13)

Water tower

Elevated structure that has a water tank to supply drinking water by gravity (1)

Water treatment

Process by which harmful substances are removed from water so that it is safe for human consumption (5)

Water utility

Organisation that is responsible for producing and distributing drinking water (5)

Water-washed diseases

Diseases that occur due to inadequate quantity of water being available for good personal hygiene (2)

Last modified: Sunday, 2 October 2016, 2:11 PM