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.
Framework of new Sea Services Agreement ready, says minister
Attorney General says he's stepping down
Road closures in two towns for running event this week
Six weekend ferry crossings could face disruption
President of Tynwald announces retirement
Police close Mountain road
Fuel firm says "fingers crossed" for calmer energy costs
Ring doorbells will need data protection registration - but shouldn't cost you money