Sewer Infrastructure Protection


In recent years, it has been found that a two step biological process corrodes sewer collection system infrastructures, including concrete sewers, STP inlet works, pump stations, wet wells and manholes. This is known as sulphide corrosion, and is increasingly deteriorating today’s public works infrastructure.

Sulphide corrosion has detrimental effects on the collection system infrastructure ranging from more frequent odor complaints or potentially lethal atmospheres, to failure of collection system pipes and manholes.

Millions of dollars are being spent worldwide on the repair and maintenance of sewer networks and waste-water treatment plants. Approximately 40% of the damage in concrete sewers can be attributed to the biogenous sulphuric acid attack, which causes severe structural deterioration and ultimate structural collapse.

Click here to learn more about Sewer Infrastructure Protection.

Protect your manholes from sulphide corrosion

There are many cases in which sewer pipes designed to last 50 to 100 years have failed due to hydrogen sulphide corrosion in 10 to 20 years. In extreme cases, concrete pipes have started to corrode in as little as 18 months, & collapse in as few as 3 years. Such problems are rarely brought to the attention of the public until a catastrophic failure occurs.

One of the solutions to stop corrosion is by spraying PROTECTA-Mag (Magnesium Hydroxide coating) on the surface of concrete sewers. PROTECTA-Mag prevents corrosion by raising surface pH, thus neutralising acids and inhibiting the formation of acid-producing bacteria. Monitoring results indicate that PROTECTA-Mag coating continues to protect the integrity of the concrete walls of the manhole, in spite of continuous sewer flow, for up to seven years.

Sewer Manhole Protection | Australian Made

With this in mind, O’Brien Plumbing Tamworth has partnered with Calix, to provide world class, industry leading, product & application processes to help protect Council’s sewer infrastructure for a fraction of the cost of alternate methods.

Calix is a multi-award-winning Australian technology company that is developing new processes and materials to solve global challenges. Calix’s technology has also been adopted overseas, where they are working with some of the world’s largest companies, governments and research institutions, to improve wastewater treatment and help protect sewer assets from corrosion.

The sewer manhole protection process developed by Calix & implemented by O’Brien Plumbing Tamworth is the safest in the industry.

  • All work is carried out above ground, without the need to access the manhole.
  • The manhole is able to be coated “live” without the need to shut down the sewer line during application.
  • The overspray of PROTECTA-Mag entering the sewer flow is complementary and beneficial for any downstream Sewage Treatment Plant (STP) and odour control.
  • Every manhole has a written & photo report completed during the inspection & application process, giving the client instant feedback on infrastructure integrity.

See the following videos of a sewer manhole being prepared & protected with PROTECTA-Mag.

4-5 times cheaper than other methods

2m Deep Manhole – Before cleaning

2m Deep Manhole – After cleaning

2m Deep Manhole – Application Complete

To arrange an on site meeting, get in touch with our office.

Call us (02) 6765 3235


Do you have broken glass?
Call us now on 1800 059 829

For emergency glass repair or replacement in your home or business, speak to one of our experts. We'll discuss options, costs and appointment times.

We'd love to help you, but unfortunately cannot assist with:

  • Cook tops or oven doors
  • Refrigerator glass
  • Light and lamp shades
  • Spectacle repairs
  • Phone or tablet screens
  • Curved glass or tanks

Is your plumbing job an emergency?
Call us now on (02) 6765 3235

Your message may not be seen until the next business day, so if this an emergency job please call us directly now on (02) 6765 3235 and we can get to you as soon as possible

Is your electrical job an emergency?
Call us now on (02) 6765 3235

Your message may not be seen until the next business day, so if this an emergency job please call us directly now on (02) 6765 3235 and we can get to you as soon as possible

Get expert help

Are you sure you want to leave?

Exiting this page will clear your answers.
Sorry, there was an issue saving your booking.

Please try again later.

We are sorry, but that service isn't currently available in your area.
Not available

But we're adding more locations and services to our list!

To receive information regarding new products, services and content from O'Brien®, please enter your email below and we'll be in touch!

Thank you. You will be notified when we are able to service your request.
Thank you for choosing O'Brien Plumbing Tamworth!

You’ll hear from us shortly about your task, and we’re looking forward to getting you booked in with one of our experts as soon as we can.

If your task is an emergency, we recommend you call us on (02) 6765 3235.

Return to website
Where do you need the work done?
Take a minute to tell us about your task.
What do you need help with?
In what type of property is this task?
Would you like mobile or branch service?
Where will the task be done?
Do you require a repair or replacement?

For windscreens, if the damage is smaller than a one dollar coin and 5cm away from the edge, we may be able to repair your windscreen. We cannot repair side or rear glass.

Will you be claiming on insurance?
Tell us your vehicle registration details
Vehicle registration
Vehicle registration state
How soon do you need the work done?
Tell us a few details about yourself
First name
Last name
Phone number
Email address
Is there anything further you'd like to tell us about your task? (optional)

By clicking submit you confirm that you have read and accept the O'Brien® Privacy Policy and Terms of Use.