Grocery giant Foodstuffs has lodged an appeal with the Environment Court over Watercare's central interceptor project.
The $950 million project will see much of Auckland's wastewater deposited into the Manukau Harbour.
A 13km underground pipeline will take up to 2 million cubic metres of sewage and stormwater to the Mangere wastewater treatment plant every year.
Water will then be treated and released into the Manukau Harbour.
The central interceptor project was given the go-ahead at the end of last year, despite fierce opposition from community groups.
Foodstuffs North Island development manager Angela Bull says the company isn't opposed to the building of the interceptor itself but it does have concerns about possible construction consequences for its Auckland distribution centre.
It's worried about traffic increases and noise as well as potential flooding and land instability through digging vibrations.
"These issues could potentially impact the operations of our support and distribution centre as one of the Watercare construction zones is immediately adjacent to our support/distribution centre at Roma Rd in Mt Roskill," Ms Bull says.
Onehunga Enhancement Society, the Manukau Harbour Restoration Society and Mangere Bridge Residents and Ratepayers Group lodged a joint appeal to the Environment Court last month.
- Manukau Courier
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