Sewer Systems
Chetwins is the agent for eco-friendly NaturalFlow sewerage and wastewater treatment systems. This is our flagship product as NaturalFlow systems are robust, electricity free and have very little maintenance requirements making them cost-effective throughout their lifetime.
The secret of the innovative Kiwi product lies in worms or vermiculture. Black water (solids) and grey water are separated by the system. Natural filtration processes treat the grey water and the worms deal with the black water component leaving it fully broken down.
After treatment the black water is recombined with the grey water for final disposal into the soil. The system is odourless and quiet. As the NaturalFlow system is modular it can easily be added to over time if needs increase. The modular nature also makes it easy to transport and install, particularly in remote locations. Our services include design, supply, installation (including exterior drainage work, both wastewater and stormwater) and maintenance services.
We also offer a number of other wastewater solutions
depending on your needs including:
- BIOROCK, which provides similar benefits to NaturalFlow but instead of worms uses filter media with huge surface areas that allow colonisation of the bacteria necessary for the effective treatment of domestic wastewater.
- Aerated wastewater treatment systems
- Construction
- Septic tanks
- Grey water treatment systems
- Water harvesting solutions including water tanks, pumps and filters