Connecting a house to Watercare's sewer
Consent with stamped drainage plans
Auckland Council approves and stamps the site and drainage plans as part of the building consent.
Apply to Watercare
Watercare replies by letter with an application number, which you hand to the drainlayer.
The drainlayer books it in
Watercare's approval can take up to 10 working days. The drainlayer then gives it 2 working days' notice before making the connection.
Report and sign off
Within one working day of finishing, the drainlayer tells Watercare and completes a Compliance Statement 3 for the work.
Certificate for the council
Watercare sends a Certificate of Acceptance, which you need before Auckland Council will issue the code compliance certificate.
What's different about drainlaying in Auckland
Works Over approval
Digging, piling or building near or over a Watercare pipe or manhole needs its approval first. Within two metres of a smaller local pipe, nothing goes over manholes, valves or connections, and the pipe is filmed before and after. The council won't finish the code compliance certificate without Watercare's sign-off.
Downpipes found in the sewer
When Watercare and Auckland Council checked more than 4000 properties around Okahu Bay, St Heliers and Mission Bay, they found issues at more than 200, such as downpipes on the wastewater line and gully traps sitting too low. The council's compliance team then asked owners to fix them.
Smoke, dye and cameras
Watercare still tests private drainage across Auckland to find where stormwater gets in, writing before it visits. A fault it finds on your side is yours to have repaired.
Gas pipes under the lawn
Vector says large numbers of gas leaks every year come from tradies or DIYers hitting its pipes, which can sit under lawns and driveways. Get plans from beforeUdig (0800 248 344) first, and remember ground movement can make plans less accurate.
Two different certificates of acceptance
Watercare's Certificate of Acceptance is its own sign-off on a connection to its network. It isn't the Building Act certificate of acceptance that an owner applies to the council for after urgent work done without a consent. Keep both kinds of paperwork apart in your files.
Some connections are Watercare's to make. Its maintenance contractor handles the complex ones, and no wastewater pipe may be joined to a rising main, the pressurised pipe a pump station pushes sewage through.
Licence classes and self-certification
Watercare lets a PGDB-licensed or certifying drainlayer make a standard gravity connection. Under the PGDB, a certifying drainlayer works unsupervised and can certify; the Drainlayer class (called Tradesman until 1 April 2025) and restricted drainlayers need a named certifying supervisor. Check the drainlayer's full name on the PGDB register, and their supervisor's too.
From 7 September 2026, certifying drainlayers could apply for a self-certification endorsement, which lets them sign off eligible consented drainage without council inspections. It doesn't remove the need for a consent, or for Watercare's connection steps. Our certificates guide explains each document.
Questions for an Auckland drainlayer
- Is any Watercare pipe or manhole close enough to need Works Over approval?
- Who applies to Watercare, and who completes the compliance statement?
- Have you pulled beforeUdig plans, and will you hand dig near gas?
- Are you endorsed to self-certify, or will Auckland Council inspect?
What we would do
Check Watercare's GIS map for public pipes before anything is designed, because a manhole in the wrong place can reshape a whole extension. Ask your drainlayer to handle the Watercare paperwork, and don't apply for the code compliance certificate until Watercare's Certificate of Acceptance is in hand. And on any section with gas, insist on beforeUdig plans before a spade goes in. We'll pass your job to an Auckland drainlayer who handles that kind of work.