Cape Town - Stricter water restrictions for Cape Town will be in effect from Saturday, July 1, the city says.This means that users will have to immediately use less than 87l of water per person per day, whether at home, work or elsewhere, water mayoral committee member Xanthea Limberg said on Friday.The latest restrictions would be used to drive down daily collective water usage to 500 million litres."We cannot thank all of those water users enough who have been shining water ambassadors over the past months, and who have helped us to drastically reduce our water usage," she said.Water had to be saved while there was still any left, as authorities expected a very dry summer.The probability and volume of rain was "incredibly uncertain".READ: Cape Town emergency 'Day Zero' drought plans to be announcedLimberg said other emergency interventions were underway.Many domestic consumers were still using in excess of 20 000l per month per household.The city will be issuing letters to warn these users that water management devices would be installed at properties with unjustifiably high consumption.It was also continuing engagement with business, informal car washes and government departments.Ways to save waterTo decrease water usage to sufficient levels, residents are asked to:Only flush the toilet when necessary, wherever you are;Take a shower that is shorter than two minutes. Switch to an efficient shower head. Only do a "wipe down" on alternative days to conserve water;Collect your shower, bath and basin water and reuse it to flush your toilet, and for the garden and cleaning (bear in mind that greywater use has some health and hygiene risks you must avoid; keep hands and surface areas sanitised or disinfected);Defrost food in the fridge or naturally, rather than placing it under running water;Use a cup instead of running taps in the bathroom or kitchen for brushing teeth, shaving or drinking;Wait for a full load before running washing machines and dishwashers. The rinse water from some washing machines can be reused for the next wash cycle;Upgrade to a multi-flush toilet and/or put a water displacement item in the cistern which can halve your water use per flush;Fit taps with aerators or restrictors to reduce flow to no more than 6l per minute, as per the city's by-laws;Check for leaks on your property and fix them immediately.