The stormwater system is an underground network of pipes that drains the rain off of our roads, footpaths, and from our gutters, and diverts it into our streams, rivers and eventually out to sea.

Unlike wastewater, which gets treated at a treatment plant, stormwater does not get treated. This means everything that goes into the stormwater system will eventually end up at sea.

We all share a responsibility for keeping our stormwater system clean, so our environment is not negatively impacted.


Below is a map of the stormwater system in the region – zoom in to find out where the drains under your street go.

Looking after your stormwater

Every day we undertake a number of tasks that can impact on our stormwater system. All we need to do is make a few small changes and our waterways and the environment will be better off.   Read more

Stormwater in the Wellington region

Check out what's been happening around the Wellington region to look after our stormwater system.   Read more