This standard specifies the requirements for rotational moulded polyethylene (PE) water storage tanks up to 10,000 litres capacity. It covers material properties, construction, performance criteria like impact strength and reversion, and marking to ensure tanks are safe for storing drinking water.
Specifies material, manufacturing, and performance requirements for moulded polyethylene water storage tanks for domestic use.
Quick Reference Values
Maximum Reversion5 percent
Maximum Overall Migration Limit60 mg/l
Impact Test Dart Mass12 kg
Impact Test Drop Height2 m
Maximum Capacity Covered10000 Litres
Practical Notes
Always ensure the tank has the ISI mark and a complete manufacturer's label as per Clause 9 before purchase.
Black tanks generally offer better UV resistance and prevent algae growth compared to lighter colors, though the code's primary requirement is opacity.
Installation requires a firm, flat, and level base that supports the entire bottom surface to prevent stress concentration and failure.