Our onsite wastewater services include design, assessment and consultation in the top of the South Island, NZ. Contact us to discuss your project.
DESIGN
– Reports for Building Consent
– Onsite wastewater treatment and disposal for residential and commercial projects
– Irrigation for effluent re-use
– Rooftop collection and filtering
– Stormwater management including rooftop collection overflow
ASSESSMENT
– Evaluation for Resource Consent renewals
– Existing system assessment for failing systems or building additions
– Site and Soil Assessment
CONSULTATION
– Discussion and advice on wastewater treatment options to suit your site requirements
– Indicative pricing for a range of solutions
SYSTEM PREFERENCES
- Lowest installed cost
- Low tech with no ongoing servicing costs
- 20+ year life span
- Passive, free from aerators, blowers and pumps
- Low maintenance
- Natural bacterial/evapo-transpiration processes
SPECIALISTS IN
- Standard septic tank systems
- AES, passive secondary treatment and disposal
- Constructed wetlands
- Effluent re-use through dripper-line irrigation
THE PROCESS
- Contact us on 0800 992 837 or email us. We discuss your project, possible wastewater treatment solutions and cost estimates. To proceed both parties sign an engagement agreement.
- Onsite meeting for Waterwork.nz to determine possible wastewater system locations, do measurements, take soil samples and discuss suitable systems with you.
- We prepare the design report for submission to Council for building and/or resource consent and handle any report-related inquiries from the Council.
- After approval, the wastewater system can be installed and a Council officer will visit to sign off for correct installation.
Note:
The type of wastewater system chosen and the size of the disposal field is determined by the number of bedrooms in the house, the soils, the slope of the land, requirements of the local Council and proximity to water sources.
The design of the wastewater system can take 2 – 4 weeks, sometimes longer depending on workload and project complexity. The cost of designing a wastewater system is between $1,500 -$ 2,500 and the cost of buying and installing a residential wastewater system can be between $14,000 – $25,000.
AES PASSIVE TREATMENT DESIGN
An AES Treatment System AES-38 plant achieved AS/NZS 1547 secondary effluent quality performance requirements in Trial 12 of the OSET NTP testing programme.
View the certificate
View notes to the certificate
CONSTRUCTED WETLAND DESIGN
View NIWA Guideline for use of horizontal subsurface flow constructed wetlands in onsite treatment of household wastewater here.
Resource Consent Renewals
To determine if you require a renewal and by when, contact us
Resource consents for discharges are time limited and expire. You must apply to renew your consent before that happens.
This is because how well your system works changes over time, new technology emerges, and the state of the receiving environment can change. When you apply to renew, these can be evaluated.
How to Renew
Waterwork.nz have three professionals recognised by the Tasman District Council as operating in the Nelson-Tasman region preparing renewal applications. Your renewal application must include an on-site wastewater management system evaluation report done by a suitably qualified professional like ourselves.
We will do a stocktake on how your existing system is working, and identify what maintenance or upgrades are needed to keep it performing over the lifetime of any replacement consent.
Lodge your Replacement Consent Application at least 6 months before expiry
When your replacement consent application is lodged affects whether you can continue to rely on the old consent if Council has not made a decision on the replacement consent at the expiry date. It is best to do this at least 6 months before expiry.
