If stormwater enters the wastewater system, it can flood. This causes the sewer to overflow, sending wastewater onto people’s property, and into the environment. This can make people sick and damage aquatic life.
Stormwater inputs also limit how much our wastewater pipes can hold. This could stall future development in your area.
Stormwater increases the volume of water to treat at the Wastewater Treatment Plant, this can overflow into our rivers and decrease water quality. It also costs more to treat, meaning ratepayers pay more.
We have set aside funding in our Long Term Plan to address this issue. We have also secured Central Government funding from the Three Waters Reform programme for this project.
Manhole with corroded base
Stormwater spouting running into sewer
When we find a defect, or someone reports an overflow, we are fixing, repairing or replacing pipes and manholes. Our scheduled pipe renewals also play a part in this.
We are determining where stormwater flows are coming from, and how much is flowing through, allowing us to narrow down sources. Our hydraulic modelling also plays a part in this.
Have a look at your gully trap. Is it cracked, broken or too low? Do any pipes connect from the roof?
Stormwater flooding indicates a failure of the stormwater system and also has the potential to enter the Wastewater system if there are defects nearby.
Sewer backups or overflows are more than just a health risk. They also indicate significant stormwater inflow. Knowledge of where and when these occur can help Council track down the problem
Thank you in advance.
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