Following separation from the clean effluent water, the micro-organisms are subjected to a high-temperature rotary thermal drying process. This process sterilises, pelletises and dries them to greater than 90 per cent dry solids.
Bioboost is produced in accordance with the Guidelines for the Safe Application of Biosolids on Land, December 2025, and is manufactured under a quality management system certified to ISO 9001 by Telarc.
Bioboost meets the highest Grade A for pathogens, meaning the product is sterilised and safe to use.
Bioboost meets the highest Grade 1 for contaminants.
| Element | Percentage % |
| Nitrogen (N) | 6.0 |
| Phosphorus (P) | 2.5 |
| Potassium (K) | 0.5 |
| Calcium (Ca) | 1.0 |
| Magnesium (Mg) | 0.5 |
| Sulphur (S) | 0.9 |
| Iron (Fe) | 0.6 |
| Zinc (Zn) | 0.05 |
| Copper (Cu) | 0.02 |
New Plymouth Wastewater Treatment Plant
