GRWA – How to Control Leaks on your Property

Why is Leakage Management Important?

GRWA is a small system with limited pumping capacity. This means that even small leaks can have a significant effect on the amount of available water.

The Grange Road Water system is experiencing excessive leaks on properties and the Committee asks everyone to do your best to eliminate leaks.

To put the challenge in perspective

2022/23 was a record year for leaks – we estimate around 30% of the water pumped into our system was lost to leaks on properties. This is 10% worse than previous years and may cause us to breach our abstraction limit of 9000 m3.
Most leaks are on properties – over the last few months we have had 11 significant leaks, 7 were on members’ properties. In addition, we have a continuous leakage of 4000 litres per day. This is due to household leaks such as dripping taps, faulty toilets etc..

Finding leaks is difficult and we need your help, so here are guidelines on what you can do.

Guidelines for Reducing, Finding and Fixing Leaks

1. Turn Off Water at Toby when you are not in Hahei

Please shut off your water at the toby when you are going to be away for some time. For your information, you may find when you return, that we may have turned off your toby if a leak is suspected on your property.

2. Check Supply pipe from Toby to Holding tank

Many older houses have black alkathene pipe running from the toby to your holding tank. Black alkathene pipe can easily crack and so we recommend you replace it with blue MDPE plastic pipe. Please note that GRWA is responsible for delivering water to your toby only. After the toby, members are responsible.