Sewage Overflow Alerts

This table shows recent wastewater overflows and related health warnings. Our Can I Swim? page includes these warnings as well as the water quality of the popular swimming and fishing locations in the district.

 Please note that MPI also issue toxic shellfish warnings, you can view them here.

Waterway affected  Discharge location Date of discharge Waste type Warning Comments 
Mangaotuku Stream Banks Street, New Plymouth 12/10/2020 Reticulation sewage

Do not collect shellfish and no swimming (Bonithon Ave Inlet Structure)

Warning ceases: 14/10/20

Do not collect shellfish (Port Outlet, Mangaotuku Stream outlet to ocean)

Warning ceases: 9/11/20

Unauthorised discharge (into a surface water body). Blockage cleared, site cleaned and sanitised.
Urenui River Stormwater outlets onto the mudflats Unknown Likely septic tank discharge

No shellfish gathering and avoid the mudflats

Warning ceases: Ongoing

 Testing has found elevated levels of bacteria in the stormwater discharging onto the mudflats.
Bell Block Beach  Treatment Plant Outfall 1.2km off Waiwhakiho River Mouth  Historical  

No Shellfish Gathering

Warning ceases: Ongoing

Residual levels can accumulate in shellfish under normal wastewater treatment plant operation. Ongoing monitoring of shellfish in progress to confirm if signage can be removed.
Lake Rotomanu  Treatment Plant Outfall 1.2km off Waiwhakiho River Mouth  Historical  

No Shellfish Gathering 

Warning ceases: Ongoing

Residual levels can accumulate in shellfish under normal wastewater treatment plant operation. Ongoing monitoring of shellfish in progress to confirm if signage can be removed.
Waiwhakaiho River Mouth  Treatment Plant Outfall 1.2km off Waiwhakiho River Mouth 
Historical  

No Shellfish Gathering 

Warning ceases: Ongoing

Residual levels can accumulate in shellfish under normal wastewater treatment plant operation. Ongoing monitoring of shellfish in progress to confirm if signage can be removed.