You can now purchase a UID nameplate from HydroChem’s shop.

NSW Health released the new Legionella Control Regulations in August 2018.

Under the new Regulations, the occupier must ensure that a unique identification (UID) number designated by the local government authority is displayed on each cooling tower of a cooling tower system.

The Regulations provide that the sign must be:

(a) a minimum size of 148 mm by 210 mm (A5 size), and

(b) clearly visible to a person examining or inspecting the water-cooling system, and

(d) made of a durable material.

That UID must be first displayed no later than 30 days after the local government authority gives the occupier of the premises notice of the unique identification number that it has designated.

See the new Proposed NSW Legionella Control Regulations here.

UID too-small

UID plate that is too small


UID not-durable

UID plate that is not durable.


UID wrong-name

UID plate that does not follow appropriate naming convention.


Cooling Tower UID just-right

UID plate that is “just right”.