An aeration treatment system treats wastewater to a higher standard, reducing pathogen and nutrient loads. This is beneficial to the surrounding environment and human health. These systems are commonly used for both residential and commercial purposes. They do require power (solar is an option) and a yearly maintenance contract (ensuring your system and field work well).

The aeration system pumps effluent to dripper lines which can either be surface laid and planted or buried in the topsoil layer and planted with grass. Use this to your advantage for example the lines can be laid along shelter belt or boundary plantings, through gardens or hidden away under existing bush or scrub.

Aeration systems with dripper lines work well on more difficult sites for example sites with slow draining clay, slopes greater than 10 degrees (less than 25 degrees is a permitted activity), sites with higher groundwater or closer proximity to surface water.

Call us today to determine whether this system is an acceptable solution for your site and proposed use.

RESOURCE CONSENTS

If a Resource Consent is required O’Brien Design Consulting can write a report and submit the associated documents to Council for you.

A conventional septic tank and trench system is gravity fed requiring sufficient fall to work effectively. Power is not needed, reducing ongoing costs. The tank is to be emptied and serviced every five years. Trenches are to be grassed and mown and should not be grazed by heavy stock, driven on or built over.

Some of the requirements which influence whether this system is suitable for your site, and that it functions well are listed below:

Some Consent Notices listed on the Certificate of Title require a specific system to be installed.
The soil type on your property must be sandy, or friable loam for it to work effectively and be accepted by council.
The slope of the field must be less than 10 degrees.
1200mm minimum separation distance from the base of the trench to groundwater.
20m setback from surface water.

A comprehensive list of wastewater regulations are available in the Regional Plan for Northland (2019), Section C.6.1.3 and TP58 On-site Wastewater Systems: Design and Management Manuel Third Edition (2004).

Call us today to determine whether this system is an acceptable solution for your site and proposed use.