Information on the total amount of solid waste entering the sewerage network in England and Wales is not collected for regulatory purposes. Ofwat obtains information on the total actual sewage from the ten water and sewerage companies in England and Wales. Aggregate figures for 2002–03 are as follows:
|Sewage—Volumes||Megalitres per day|
|Uunmeasured household sewage||6,468|
|Unmeasured non-household sewage||167|
|Measured domestic sewage||2849|
|Waste water returned||(2)10,242|
(1) This is the sum of unmeasured household and non-household sewage.
(2) This is the sum of unmeasured sewage, measured domestic sewage and trade effluent.
|Septic tank waste||1,343|