The MRWA has been collecting industry feedback on the current MRWA Gravity Sewerage standards since 2016.

They have accumulated a significant number of suggestions from Contractors, Consultants, Product Suppliers, Project Delivery and Operations and Maintenance personnel.

Most of the feedback has centred on gaps in the standards where there has been limited or no information on best practice.

Comprehensive inspections of new gravity sewerage assets has also been undertaken by the MRWA to see how new assets are performing.

Virtually all the standards have been updated and about a dozen new standards have been developed.

All CCF Members are now invited to review the proposed changes and offer comment.


Initial consultation with several Contractor members of the CCF, and ALDE has taken place, and now the MRWA is seeking further review and comment from all contractors and designers before finalisation and publication of the revised standards on the MRWA web Portal.

To view the list of Significant Changes CLICK HERE

To view/download the accompanying drawings CLICK HERE

Review comments should be forwarded to for a submission to MRWA. Comments are required by COB 12th June, 2020.