Leaks, Maintenance and Upgrades

We are responsible for the maintenance of 120km of trunk mains and 560km of service mains piping water throughout the district. This includes the mains and pipes leading up to your boundary and your toby or manifold. Leaks in pipes from your toby to your house are your responsibility to fix.

Reporting water leaks 

If you notice a water leak on a road, in a park or reserve, or on someone else’s property please let us know – giving as much information as possible about the leak (e.g. location, size). If the leak is on private property, we'll get in touch with the land owner to get it fixed.  

Some leaks require urgent attention, while others can be fixed under normal response times. The following are some examples of leaks that will require urgent attention. If you think a leak may be urgent please call us on 06-759 6060. If it's not urgent you can either call us, email us on enquiries@npdc.govt.nz or use the form at the bottom of this page.


Water Supply 

Water leaks that look like a kitchen tap turned on full

Water leaks on private property which are causing internal damage to a property and the toby can't be found

Water leaks on roads where the seal of the road is lifting

Water leaks at fire hydrants or valves where the water is gushing out

No water supply to a property


Water leaks on private property 

Should I call NPDC or a plumber?

Non-metered properties:
If your toby/manifold is leaking try to establish where the leak is coming from. If the leak comes from the pipes or fittings inside the toby/manifold box or from the street side of the toby/manifold box, you should contact NPDC to report it. If the leak is on the pipe on your property side of the toby/manifold you will need to contact a plumber for assistance/advice.

For properties with a water meter:
If your property has a water meter you can determine if the leak is on your private line or on NPDC's line by checking your water meter. Take a reading of the meter in the evening and another in the morning, ensuring that no water is used overnight. An increase in the reading overnight indicates that water has passed through the meter, and that there is a water leak on your side of the meter, in which case you should contact a plumber for assistance/advice.

You may also have a leak on your property if you notice:

  • An unusual wet patch in the garden that doesn’t dry up when it stops raining.
  • An area that’s mouldy, soft, green or mossy that’s surrounded by dryer soil.
  • Paved areas (such as driveways) cracking, rising up or slumping.
  • Potholes or sinkholes.
  • A noticeable drop in the flow of water out of your taps.
  • An ongoing sound of water going through a pipe even when no taps are running. 

Water mains refreshing

Water mains refreshing, or flushing, happens when we open up hydrants for up to 20 minutes to run fresh water though pipe networks that are not frequently used (e.g. in cul-de-sacs and dead end roads).

This sometimes causes water pressure to drop, however it seldom drops below the minimum level we've set. 


Report a leak

Use the form below to let us know about any non-urgent issues.

If an issue requires urgent attention please call us on 06-759 6060, otherwise we will pick this up during normal business hours.