Lawn watering restrictions are in effect starting Sunday in Metro Vancouver, with properties only allowed to water their lawns once a week until October. The restriction is part of the region's annual drinking water conservation plans, with the regional government saying water use spikes by 50 per cent during the summer — largely due to lawn watering. The day on which property owners can water their lawns is determined by their property number — even-numbered and odd-numbered properties have designated days.