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
“Simple, safe and fully enclosed — Flexi Tanks deliver reliable liquid storage for dairy effluent, water, leachate 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.










