Whether own water transported through tankers from one place to another will be treated as a transport contract under GST or as a water distribution service. Both have different rates for GST. This is not a supply but pure service contract.
GST rate for transportation of water
The document addresses whether transporting one's own water by tanker is a transport contract or falls under water distribution service (service code 996921). Replies state water distribution normally attracts the notified GST for distribution services, while movement by Goods Transport Agencies follows separate rates. Crucially, if the tanker and transport are owned and used by the water owner, this may be characterised as self service, not a supply, and thus not subject to GST. (AI Summary)
TaxTMI