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On-Site Effluent Treatment Regional Plan

The On-Site Effluent Treatment Regional Plan 2006 deals with the effects of domestic wastewater on water quality in the Bay of Plenty. On-site effluent treatment systems include septic tanks and associated soakage fields and advanced aerobic systems. 

Draft Plan Change 14 (OSET)

Council is seeking feedback on Draft Plan Change 14 (OSET). The draft plan change includes policies and rules to manage the safe treatment and disposal of domestic wastewater. The plan change covers septic tanks, greywater, composting toilets and aerated wastewater systems.

The new provisions will replace the existing On-Site Effluent Treatment Regional Plan and will eventually be incorporated into Regional Natural Resources Plan. The On-Site Effluent Treatment Regional Plan will be withdrawn when Plan Change 14 is operative.

Click here for more information on the draft plan change.


Plan Change 1 (Date Deferral for Small communities) incorporated 1 March 2011.
Plan Change 2 (Maintenance Zones) incorporated 12 August 2014.

Newsletters Size
Newsletter No. 9 - December 2014 214KB, pdf
Newsletter No. 8 - September 2014 (Kennedy Bay) 225KB, pdf
Newsletter No. 8 - September 2014 (Otautu Bay) 263KB, pdf
Newsletter No. 7 - December 2013 263KB, pdf
Frequently asked questions (FAQ) sheet 107KB, pdf

Operative On-Site Effluent Treatment Regional Plan and Maps

The Plan and maps are available to download:

Maps Size

Schedule 9 - Maps of Rotorua Lakes Catchments

114KB, pdf
98KB, pdf
105KB, pdf
102KB, pdf
107KB, pdf
95KB, pdf
98KB, pdf

Schedule 10 - Maintenance Zone Maps

75KB, pdf
80KB, pdf
150KB, pdf
233KB, pdf
110KB, pdf
106KB, pdf
130KB, pdf
132KB, pdf
90KB, pdf

Schedule 11 - Reticulation Zone Maps

Operating Reticulation Zones

Confirmed Reticulation Zones

Future Reticulation Zones

146KB, pdf
145KB, pdf
132KB, pdf
120KB, pdf
158KB, pdf
122KB, pdf
107KB, pdf
170KB, pdf
137KB, pdf
73KB, pdf

132KB, pdf

75KB, pdf
165KB, pdf
132KB, pdf
112KB, pdf
135KB, pdf
154KB, pdf
78KB, pdf
128KB, pdf

For a printed copy of the Plan ($28) contact us.

Monitoring updates


Contact Bay of Plenty Regional Council:

  • for copies of the documents or maps
  • for information on septic tank maintenance, nutrient management and reduction options
  • for information on the proposed plan change process and provisions

Phone or email:

Terry Long (Senior Project Implementation Officer)  ph: 0800 884 881ext 8215, or
Ruth Feist (Team Leader - Integrated Planning) ph 0800 884 881 ext 9351

Contact your district or city council for information on reticulated sewerage schemes:

  • Rotorua Lakes Council (phone 07 348 4199)
  • Western Bay of Plenty District Council (phone 07 571 8008)
  • Whakatane District Council (phone 07 306 0500)
  • Kawerau District Council (phone 07 306 9009)
  • Opotiki District Council (phone 07 315 3030)

Other Information