On-Site Wastewater Management Systems (OWMS) go by a range of names, including septic tanks, onsite systems, and On-Site System Effluent Treatment (OSET) and many more.
Roughly 18% of New Zealand's population discharges its waste via OWMS.
The OWMS SIG (Special Interest Group) are a voluntary network of professionals involved in their manufacture, design, operation and regulation.
The Water New Zealand OWMS Special Interest Group aims to:
Membership of the groups is open to all Water New Zealand members. If you are a member and wish to belong to one of the special interest groups, make sure you are logged in, then simply send an email via the contact form at the bottom of this page.
If you are not a current member, visit our membership page for more information. Remember to tick the appropriate Special Interest Group box when completing the Membership Application form.