Individual Water Supply Contracts TasWater may provide water to irrigators and other commercial operators under an individual contract that is separate to the standard Customer Contract. This supply is often provided during periods of low urban demand, or when spare capacity is available. TasWater cannot guarantee the supply of water under this arrangement, particularly during the summer months, as priority is given to our customers on normal regulated services. Please call TasWater on 13 6992 if you wish to discuss an individual water supply contract. Indicative Demand Forecast form