Safe, Enclosed & Self Supporting
Flexi Tanks are fully enclosed, self-supporting bladder tanks that store from 1,000 litres to 2.55 million litres. Simply roll them out on a flat surface and connect, delivering safe, affordable storage for dairy effluent, water, waste water and leachates in just a few hours. KIWA-certified. 10-year warranty. 800+ tanks installed across New Zealand.
Works Across Every Industry
"Flexi Tanks deliver reliable liquid storage for dairy effluent, water and industrial needs, no matter the industry.”
10 Year
Full 10 year manufacturer's warranty
800+
Over 800 Flexi Tanks nationwide
KIWA
Independently certified by KIWA for storing Dairy Effluent
Why Flexi Tanks
Safe & Fully Enclosed
Self-supporting design means people and animals can’t fall in. No fencing required and fully OSH compliant.
Fast & Simple to Install
Ready in 2–4 hours. Just prepare a flat surface, unroll, and connect to your existing system.
Cost Effective
Lower site preparation costs than traditional ponds or tanks. Fully depreciable at 25% per year with a 10-year manufacturer’s warranty.
Built to Last
Made from multi-layered, UV-stabilized ENVIRO+ fabric with 450kg tensile strength per 5cm. Proven globally since 1959 with an expected life of 15 years.
Better Quality Storage
Fully enclosed system prevents rainwater dilution, evaporation, and contamination — keeping your water or effluent in better condition.
KIWA Certified
Independently certified by KIWA for dairy effluent storage — the only flexible tanks in New Zealand with this certification.










