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Drain Cleaning and Unblocking

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Expert Drain Cleaning & Unblocking Services

Blocked drains can cause major disruptions and even lead to costly damage if not dealt with quickly. At Semtex Plumbing and Civil, we provide fast, effective, and long- lasting drain cleaning solutions for residential, commercial, and council infrastructure.

Whether it’s a kitchen sink, stormwater pipe, or a large culvert, we have the expertise and specialized equipment to clear any blockage and restore full flow.

Servicing Palmerston North and the wider Manawatu region.

Our Comprehensive Drain Cleaning Services

At Semtex Plumbing and Civil, we offer a full range of professional drain cleaning services tailored to meet the specific needs of your drains:

  • High-Pressure Water Jetting – Efficiently breaks down grease, roots, and sediment for thorough cleaning.
  • Mechanical Drain Cleaning – Utilises advanced Picote milling machines and Speed Rooter cable machines for tough blockages.
  • Stormwater & Sewer Cleaning – Designed for both residential and large- scale infrastructure.
  • Preventative Maintenance – Regular flushing to reduce the risk of future blockages.

Advanced Jetting Technology for Every Job

We utilise cutting-edge jetting technology, with a range of water jetters designed for different drain sizes and blockage types:

  • Small-Scale Blockages (Residential & Commercial): 21LPM @ 5,000 PSI – Perfect for kitchen sinks, toilets, and standard drainage systems.
  • Heavy-Duty Cleaning (Stormwater & Large Infrastructure): 150LPM @ 2,500 PSI – High-flow jetting designed for large-diameter pipelines and culverts.

No matter the size of the job, whether it’s a home drain or a large council pipeline, we have the right tools for the job.

CCTV Drain Inspections for Accurate Diagnostics

When blockages persist, it’s crucial to know the root cause. Our state-of-the-art CCTV drain cameras allow us to:

  • Identify blockages before clearing.
  • Detect damage, including cracks, root intrusion, and collapsed pipes.
  • Confirm cleaning success with post-cleaning inspections.

Say goodbye to guesswork—our CCTV inspections give you a clear view inside your pipes.

Why Choose Semtex for Drain Cleaning?

At Semtex Plumbing and Civil, we pride ourselves on offering specialised, high- quality drain cleaning services. Here’s why you should choose us:

  • Specialised Equipment & Technology – We invest in high-end jetting and milling machines for optimal results.
  • Fast & Reliable Service – We provide quick responses for urgent blockages and emergencies.
  • Experienced Team – Our fully qualified drainlayers have years of practical experience.
  • Long-Term Solutions – We don’t just unblock your drains; we help prevent future issues with preventative maintenance.

Serving Residential, Commercial & Infrastructure Needs:

We’re equipped to handle drain cleaning projects of all sizes:

  • Residential – Blocked sinks, toilets, stormwater drains, sewer lines.
  • Commercial – Drain maintenance for retail, hospitality, industrial, and office spaces.
  • Council & Infrastructure – Large-diameter stormwater and sewer pipe cleaning for municipal projects.

We cater to both small residential needs and large-scale council infrastructure projects with the same attention to detail.

Get in touch

  • Contact Us – Get Your Drains Flowing Today!
  • Ready to clear your drains? Contact Semtex Plumbing and Civil today for fast and effective drain cleaning services:
  • Call us now on 0800 473 6839
  • Email us at This email address is being protected from spambots. You need JavaScript enabled to view it. for a free consultation or quote.