The Nelson Regional Sewerage Business Unit (NRSBU) oversees the Nelson Regional Sewerage Scheme, which is jointly owned by the Nelson City and Tasman District Councils, managing the current treatment facilities and network.

Read more about the NRSBU discharge consent here.

Resource Consent Renewal Bell Island Wastewater Treatment Plant

Presentation by Senior Environmental Consultant Dr. Rob Lieffering (4.4MB PDF) exploring project objectives, resource consents overview, regulatory framework, assessment of environmental effects and sensitive sites.

Effects of treated wastewater on Waimea Inlet, Monitoring Programme and Results (1.1MB PDF)

See the Pond Managment and Odour Mangement Plans. Read More.

Impact of the Bell Island Regional Treated Effluent Discharge on the Coastal Environment: 5 Yearly report - Read more


  • Emerging Organic Contaminants

    Emerging Organic Contaminants (EOCs) have been defined as synthetic or naturally-occurring chemicals or any microorganisms not commonly monitored in the environment, but which have the potential to enter the environment and cause known or suspected adverse ecological and (or) human health effects (Stewart et al. 2016). Municipal wastewater treatment plant (WWTP) effluent is recognised as a major source of EOCs into the environment. The Nelson Regional Sewerage Business Unit (NRSBU) contracted the Cawthron Institute and Northcott Research Consultants Limited (by subcontract) to analyse a suite of EOCs in the effluent from the Bell Island WWTP.