About Us

Bain Liquid Disposal, A Division of CST Group

Founded in 1950 as Adams’ Septic Tank Services, Bain Liquids Disposal is now part of CST Group, a proudly locally owned and operated business.

Through challenges and triumphs — including rebuilding after a devastating fire destroyed Bains’ offices and factory in 2006 — former owner Bruce Bain remained dedicated to serving loyal clients with professional liquid waste disposal services. In 2024, that legacy was proudly carried forward by CST Group.

The Experts In Our Line Of Work

  • Trusted Experts in Liquid Waste Disposal

  • Fully Code Compliant

  • We Take Responsibility for Your Waste

  • Fully Trained Staff

    Our staff and fully trained and certified including confined space work, height safety (above and below ground), receiving permits, and hazard identification.

Why Choose Us?

  • We're Here to Help!

    At CST, we don’t just provide a service — we promise to stand beside you as partners in keeping your property healthy and efficient. With decades of experience, we know how to prevent small issues from becoming big ones. Our team is committed to expert care, treating every home and business as if it were our own.

Things to Know

  • You Are Responsible for Your Own Waste – Disposal Companies Only Transport It for You!

    Many companies aren’t compliant with waste management requirements and as a result you as the ‘waste owner’ are liable for their malpractice. Potential fines you face for their negligence are as high as $35,000 so far and counting.

    You can be confident that CST Group is fully code compliant. We work alongside the Waikato Regional Council to ensure the highest standards of liquid waste disposal.

  • Some Waste Has to Be Disposed in the Area You Live in or Go to Special Facilities.

    Waste disposal companies can’t simply disposal of waste where they want. All disposal companies must pass an internal audit with local councils in order to ensure the correct procedures and requirements are adhered to.

    Your trusted experts in liquid waste disposal.

  • How often should I clean my Grease Trap?

    Depending on the size of your business between 1 to 3 months. We’ll save your business money by doing the job properly the first time, and help you manage ongoing planned maintenance.

  • How Often Should I Clean My Septic Tank?

    We recommend that you clean your Septic Tank once every 2-3 years depending on the numbers living in the home. We’ll help you save money by doing the job properly the first time, and help you manage ongoing planned maintenance.

Areas We Serve

CST Group provides key services to the Waikato Region, with our depot just our of Te Awamutu we aren’t far away to provide our services to you.

  • Cambridge
  • Hamilton
  • Morrinsville
  • Tirau
  • Waitomo
  • Matamata
  • Te Awamutu
  • Tauranga
  • Paeroa
  • Kawhia
  • Taupo
  • Rotorua
  • Tokoroa
  • Thames
  • Otorohanga
B A I N