Sewer = /su(r), sju-/ n. a conduit, usu. underground, for carrying off drainage water and sewage.
Sewage = /sud, sju-/ n. waste matter, esp. excremental, conveyed in sewers.
Sewerage =/surd, sju-/ n. a system of or drainage by sewers, the infrastructure of the same.
CSO = Combined Storm Overflow
(activated in this of severe rainfall to discharge combined sewage discharge and surface water run-off)
DC/WW = Dwr Cymru / Welsh Water
(the statutory water services undertaker with exclusively responsibility for the Newport Area)
EA(W) = Environment Agency (Wales)
(with primary statutory responsibility for all monitoring and supervision of water services and environment in the Newport Area.)
ID = Internal Diameter
LSO = Long Sea Outfall
SAP = Sewer Access Point (manhole)
SPS = Sewage Pumping Station
WwTW = Waste Water Treatment Works (Sewage Works)