There are four common solutions to the problem of suburban sewage disposal. Although there is no general agreement on the acceptability of all of these methods, listed in order of usual preference they are: Connection to an existing publicly financed sewerage system; Construction of a privately financed community sewerage system; Construction of a treatment system for each house with 'on-lot' disposal of the effluent in soil; Provision for an individual treatment system for each house with discharge of effluent to storm drainage.