Do you do drain unblocking?

We don't do drain unblocking. We specialise in sewer line repairs, stormwater systems, downpipe installation, and sump pumps.

Is my stormwater system my responsibility or the council's?

The pipes on your property are yours. The council main at the street boundary is theirs. We handle the private side.

Do you handle sewer line camera inspections?

Yes. We camera-inspect sewer lines to confirm root intrusion or structural damage before quoting any repair work.

Why do the toilet and shower wastes all smell at once?

Often a sewer line fault on your property — common in Auckland's pre-1980 clay and earthenware pipes. We camera-inspect and repair or replace the affected section. We don't do jetting or drain unblocking.

Drainage in Mount Roskill, Auckland

Drainage repairs, stormwater management, sewer line repairs, and downpipe installation across Auckland.

4.8Certified PlumberGasfitterDrain Layer

Mike Muir

Certified Plumber, Mount Roskill

Drainage services in Mount Roskill cover stormwater systems, sewer line repairs, downpipe installation, and sump pump installation. Muir Plumbing, Gas & Drainage holds a drain layer licence and handles everything from a failed sewer line to an overflowing stormwater system. Sewer line repairs range $800–$5,000+ depending on the length and method; stormwater pipe installation runs $600–$3,000. We serve Mount Roskill, Blockhouse Bay, Epsom, and surrounding Auckland suburbs. We investigate the root cause, not just clear the symptom.

Drainage services — common jobs and typical costs
Service	What's involved	Typical cost (NZD)	Time
Sewer line repair / re-line	Dig, repair or reline section	$800–$5,000+	1–3 days
Stormwater pipe install / repair	Downpipes, sumps, soakpit or street connection	$600–$3,000	1–2 days
Sump pump installation	Install pump, outlet pipe, float switch	$800–$2,000	Half–1 day
Downpipe replacement	Remove old, install new downpipe, check connections	$300–$800	Half day

What's the difference between stormwater and sewer drainage?

Stormwater drains collect rainwater from roofs and paved areas — flows to the street or soakpit
Sewer drains carry wastewater from toilets, showers, and sinks to the council sewer main
They must not be cross-connected — this is a code violation and causes serious problems
Auckland Council requires separate stormwater and sewer systems

For related work, see our Roof & spouting repair services.

Do you install sump pumps and downpipes?

Yes — sump pump installation for low-lying areas prone to water pooling
Downpipe installation and replacement to handle overflow from spouting
Stormwater management including soakpits and street connections
We design the drainage layout to work with Auckland Council requirements

For related work, see our Roof & spouting repair services.

Can tree roots damage sewer lines and how do you fix it?

Yes — tree roots are one of the most common causes of sewer line damage in Auckland's older suburbs
Roots enter through small cracks or joints in clay and earthenware pipes common in pre-1980 homes
We use a drain camera to confirm root intrusion before quoting
Options include repairing or replacing the affected section

For related work, see our Leak detection services.

What are signs my sewer line needs repair?

Persistent foul smells from drains or yard areas
Slow-draining multiple fixtures at the same time
Wet or sunken patches in the lawn above buried pipes
We camera-inspect to confirm before quoting any repair

For related work, see our Leak detection services.

Common questions

Drainage — FAQ

Useful links

Auckland Council — stormwater drainage requirements

Drainage across Auckland

We provide drainage services across Auckland. Click your suburb to find out more.

Mount Roskill Blockhouse Bay Epsom Mount Albert Onehunga New Lynn Avondale Sandringham

Last updated: 7 June 2026