Manx Utilities' "toilet tax" is set to rise by almost two per cent over inflation next year.
During Tynwald's December sitting, MU chair John Wannenburgh will ask members to approve the body's price strategy.
The document recommends the sewerage rate rises from 264.9p in the pound to 270p plus September's inflation rate.
The increases would take effect next April.
Illegal immigrant turned back at Manx border can't stay in UK
Bank scammers warning as calls target Island residents
Island to extend UK VAT cut on power, says Treasury Minister
Woman thanks mystery van driver after daring sea rescue
Stay off damaged slipway in Laxey, says local authority
MHK sues attorney general and returning officer over election votes
Islanders reminded to keep challenging domestic abuse beyond October