On most farms, domestic wastewater is disposed of via septic tanks.
Generally, this discharge (which is into land) can be undertaken without a resource consent being needed. However, there are some conditions.
You need to make sure the discharge is more than 25 m from a surface stream or 50 m from a water supply well or spring. You must also make sure that there is no surface ponding, that there is no runoff into a stream, and there are no significant environmental effects.
If it is unlikely that you can meet these requirements, you must apply for a resource consent.
REFER TO FRESH WATER PLAN
Your septic tank may also need to comply with the building requirements of your district council.
CHECK WITH NEW PLYMOUTH, STRATFORD, OR SOUTH TARANAKI DISTRICT COUNCILS