Water saving in schools
A WATER-SAVING initiative that will be extended to Cape Town schools will save 1 million litres of water a day.
The extension of the Shoprite Group initiative, which includes a smart meter, followed a hugely successful pilot programme at the Hector Peterson Secondary School in Wallacedene. It resulted in an average daily saving of 80 kilolitres of water, the equivalent of the 87 litre daily water allowance for 460 individuals and a R52 000 saving each month.
Prior to this intervention the school with more than 1200 pupils was consuming 47kl a weekday and 37kl a day on weekends. However, since the introduction of the system, consumption dropped 72% to 13kl per weekday and by 100% on weekends when the valve stayed closed.
The saving measures include closing the main valves at night, replacing the plumbing of half the toilets, which were running continuously and sharing data with pupils to motivate them.
Following the huge success the Shoprite Group intends expanding this programme to Cape Town’s top 100 high water-using schools in partnership with Bridgiot, a start-up company affiliated with Stellenbosch University (SU), which designed and built the smart water meter locally. According to Prof Thinus Booysen from SU, the Bridgiot smart water meter measures and reports water use by the minute by transmitting user-friendly consumption information to an internet app and users are notified of any unexpected usage patterns via SMS and email.
“Smart water metering not only aids behaviour change due to increased awareness about water consumption. It also assists with the prevention of water losses due to leaks that would otherwise have gone unnoticed,” he said.
JOINT EFFORT: Hector Peterson Secondary School ran a pilot project.