Stormwater

Urban Stormwater Network and Rural Drainage
We currently have over 151km of primary and secondary urban stormwater reticulation in our district.
Primary stormwater includes pipes, culverts, soak holes and channels designed to minimise flooding by collecting and discharging stormwater into streams and other water courses.
Secondary stormwater includes overland flow paths through private property and along roadways to divert excess stormwater with minimum damage when the primary system is overloaded.
We also have over 240km of unlined open drainage channels regarded as 'public drains' that help form our district's rural land drainage system, along with larger natural water courses.
Stormwater discharge into waterways is regulated by Waikato Regional Council resource consents. The water discharged is not treated but is closely monitored to ensure the protection of our water catchments.
Waikato Regional Council - Stormwater
Council's water infrastructure map
Open Maps Online and then select the Utilities' module at the top left hand of the window.

Rural Land drainage
Rural land drainage is necessary to reduce surface flooding from rainfall and allow landowners to manage the groundwater level on their property.
Waipā District Council has responsibility for the bulk of rural drainage int he district, excluding a portion around the peat lakes in Ōhaupō and north of Hautapu which remains as Waikato Regional Council catchment management.
Part of Council's role is to ensure there is an effective rural land drainage system within the Waipā District in association with private landowners to a community agreed standard.
Under bylaw provisions, there are two types of rural land drains:
- Private drains - Land drains constructed and maintained by property owners chiefly for their own (and in some locations their adjacent property owners) benefit.
- Public drains - Land drains identified as being critical assets for land drainage and are regularly maintained by Waipā District Council or Waikato Regional Council.
Public drain areas include areas where we have resource consents, historic agreements in place, or flood protection that requires active involvement. These include:
- Te Kawa Drainage Area - Administered by Ōtorohanga District. Council is committed to meeting its share of works in the small area inside Waipā District
- Puniu River - Committed to maintenance of willow re-growth
- Mangapiko - Committed to stream channel works to prevent flooding in the Te Awamutu urban area
- Lake Ngā Roto - Resource consent for control of lake level for recreational use
- The Rotomanuku, Fencourt and Hautapu drainage areas in the district are controlled by Waikato Regional Council.
For more information, download the Land Drainage information brochure
Stormwater pollution
Stormwater drains aren’t wastewater drains. Only clear, unpolluted rainwater should enter stormwater drains as water flows untreated into our rivers, lakes, and streams.
If pollutants get into the stormwater drains, they will enter our natural environment and potentially harm our wildlife, and people’s health. Do your part by keeping chemicals and pollutants out of stormwater drains – this includes oil, mud, paint, chemicals, and rubbish.
Stormwater network capacity
The districts urban stormwater system and rural land drainage systems have limited capacity to treat, transport and discharge stormwater.
While we assess and control stormwater generated from new developments, private property owners need to make sure the stormwater devices on their property are maintained.
Secondary stormwater overflow paths should not be blocked or diverted without suitable and sufficient engineering consideration.
Stormwater bylaw
View the latest bylaw documents: Bylaws