Marlborough District Council operates sewerage systems servicing Blenheim, Picton, Seddon, Spring Creek, Havelock and Renwick.
These systems consist of approximately 170 km of mains pipeline, 47 pump stations, five treatment plants and approximately 12,000 connections.
Council's Assets and Services Department supervises the operation of all sewerage systems, and has operational staff to maintain the Blenheim, Spring Creek and Havelock systems. Local contractors are engaged under competitive tender to maintain the other two systems as, being locally situated, they are able to respond to problems more quickly and economically. The design and construction of major developments is let out to competitive tender.
To report sewer overflows, odours, service or any other problems or concerns please phone:
03 520 7400 (24-hour service)
Minor problems can be reported by email:
Fees and forms
Blenheim Sewage Treatment Plant Upgrade
Upgrade to Blenheim's sewage treatment plant.
Havelock Oxidation Ponds Upgrading Proposals
The STP serves both Havelock residential and commercial. The current population utilising the STP is estimated to be 550.
Picton Sewerage Upgrade
Council has selected a preferred option which will involve the discharge of well-treated effluent through a new outfall at a Picton Harbour site.
Seddon Sewage Treatment Plant
Seddon Sewage Treatment Plant information on compliance.
Frequently asked questions relating to sewerage.
Marlborough District Council operates four sewerage systems.
Information on tradewaste.
Wastewater Asset Management Plan
This plan explains the current standard of service, the future expectation of stakeholders and the assumptions about the changing environment.