An easy to use A to Z of some of the most commonly used terms used throughout the water industry.
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
third party deduction
Payment system through which bills are paid direct from government benefits rather than by the customer (e.g. Water Direct)
THM
Trihalomethanes: by-products of chlorination.
total dissolved solids (TDS)
The concentration of dissolved solids in a wastewater or effluent, ie the residue after evaporation and drying, expressed in milligrams per litre of sample.
trade effluent
Wastewater produced by trade and industry; not domestic sewage.
transfer (water)
System where drinking water or raw water is moved around a region.
treatment works
A processing site used by a water company to take water from a river or underground source and make it safe to drink.
trunk sewer
A sewer which receives many tributary branches or discharges from other large sewers and serves a large area.
turbidity
Interference with the passage of light rays through a liquid, caused by the presence of suspended matter.
