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Omaha Wastewater Treatment Plant

Resource Consents that authorise discharges from the Omaha Wastewater Treatment Plant were granted in March 2017​.

Location: Omaha Wastewater Treatment Plant

Status: Planning

What's happening?

The Omaha Wastewater Treatment Plant is located at Jones Road, Omaha and treats wastewater from Omaha, Point Wells and Matakana. The existing wastewater treatment plant is comprised of an aerated lagoon, oxidation pond, sand filters and UV disinfection. The treated wastewater is then discharged onto our land and the Omaha Beach Golf Course.

The resource consents that authorise discharges from the treatment plant need to be replaced.

Omaha Wastewater Treatment Plant Consultative Group

As part of the process of replacing these resource consents, we invited the community to form a consultative group (Omaha Wastewater Treatment Plant Consultative Group). The objective of the Omaha Wastewater Treatment Plant Consultative Group is to participate and attempt to achieve consensus in respect of:  

  • The effects of the current and future discharges from the Omaha Wastewater Treatment Plant on the environment, including but not limited to the Whangateau Harbour.

  • The contributions of factors other than the discharges from the Omaha Wastewater Treatment Plant that may be affecting the Whangateau Harbour and how these may change over time.

  • Development of resource consent applications by Watercare that will enable the treatment and discharge of wastewater from the Omaha Wastewater Plant in an environmentally appropriate manner for a period of up to 35 years.

  • Identification of other initiatives that may contribute in improving the quality of the Whangateau Harbour, noting that these may not be within the responsibility of Watercare.

Membership of the Consultative Group is open and includes representatives from mana whenua, Matakana Community Group, Omaha Beach Community, Omaha Shorebird Protection Trust, Point Wells Community & Ratepayers Association, Whangateau Harbourcare Group, Whangateau Residents & Ratepayers Association, as well as residents and neighbours of the Omaha Wastewater Treatment Plant.  

More information

The following presentations, technical reports and meeting notes have been prepared for the Consultative Group:

Existing Resource Consents:
Auckland Regional Council Resource Consent permit no:34100 
Auckland Regional Council Resource Consent permit no:34101

Treatment Plant information:
Omaha WWTP information sheet
Omaha WWTP process diagram
Omaha WWTP site layout

Terms of Reference:
Omaha WWTP Consultative Group Terms of Reference
Omaha WWTP Consultative Group media release 19 September 2014

Consultative Group meeting 30 August 2014:
Consultative Group meeting notes 30 August 2014

Consultative Group meeting 13 September
2014
Consultative Group meeting notes 13 September 2014
Treatment process and capacity presentation to Consultative Group 13 September 2014
Receiving environments presentation to Consultative Group 13 September 2014 ​

Consultative Group meeting 27 September 2014

Consultative Group meeting notes 27 September 2014 

Consultative Group meeting 5 November 2014
Consultative Group meeting notes 5 November 2014 

Project Investigation Plan 
Input to project investigation plan for the discharge of wastewater from the omaha WWTP October, revised November 2014

November 'Ground - Truthing' site visit 
Memorandum from site visit with some members of consultative group 24 November 2014
Appendix 1 map 1 of memorandum 
                                                                                                                   Appendix 1 map 2 of memorandum  

Stage One Investigations: February 2015
Omaha Stage 1 Groundwater Investigation Report
Benthic Habitat in the Whangateau Harbour
Desktop Review of Wading bird diversity
Ecological Assessment of the Omaha - Taniko Wetland Complex
Fish populations in the Whangateau
Nitrogen losses via dentrification
Surface waters quality in Whangateau Harbour
Stage One Update
Groundwater  Assessment
Risk assessment of emerging contaminants in treated wastewater​

Stage Two Investigations
Proposed Groundwater Monitoring Bore Locations​
Consultative Group meeting notes 13 June 2015
Stage Two Investigation Plan
Emerging Contaminants Presentation

Consultative Group meeting 17 October 2015
WSL presentation – status update
MPL presentation – statutory planning framework, where to next?
Consultative group meeting notes 29 August 2015

Consultative Group meeting 27 February 2016
Status Update
Nutrient aspects and emerging contaminants presentation
Ground water assessment results presentation

Consultative group meeting notes 27 February 2016

Consultative Group meeting 12 March 2016
Consultative group meeting notes 12 March 2016
Watercare presentation – dams
AES presentation – investigations

Consultative Group meeting 23 April 2016
WSL presentation - potential consent inputs
AES presentation - summary groundwater, nutrients and hydrodynamics

Final reports
Ecological assessment of wastewater irrigation fields at Omaha WWTP
Effluent irrigation ground water effects assessment
Irrigation nutrient aspects report
Omaha WWTP emerging contaminants
Survey of Wading Birds and Shorebirds in the Waikokopu Creek Arm, Omaha
Report on nitrogen cycling at the Omaha Beach Golf Club
Nutrient uptake on Jones Road Land Treatment scheme Eucalyptus botryoides stand

Draft application documents
Omaha WWTP proposed consent conditions - DRAFT WITHOUT PREJUDICE FOR CONSULTATION PURPOSES
Omaha WWTP AEE 2016 - 160530 - DRAFT FOR CONSULTATION

For more information or to join the Omaha Wastewater Treatment Plant Consultative Group, please contact:

Andre Stuart
Senior Planner Wastewater Treatment
(09) 539 7910
astuart@watercare.co.nz

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