Hardness is a measure of the presence of calcium ions, as well as other ions such as magnesium, iron and manganese.Hard water can cause scale to form on boilers and hot water pipes and fittings.To minimise undesirable build-up of scale in hot water systems, total hardness (as calcium carbonate - CaCO3) in drinking water should not exceed 200 mg/L.The typical hardness level of water delivered in South East Water's area is between 12 – 45 mg/L. Water Hardness - posted in Technical & Equipment: Water Hardnessby Andrea WattsPeople are often confused by the terms: ‘general hardness’, ‘total hardness’, ‘temporary hardness’, permanent hardness’, ‘carbonate hardness’ and ‘total dissolved salts’. Emergency water relief program for bushfire affected residentsYour water is safe to drink: Coronavirus (COVID-19) update If these other factors combine, water can become corrosive if it's too soft. The below table provides water hardness … Other things can also influence the effects of hardness. – The dishwasher must be programmed for the water hardness … This has numerous benefits that will be felt right throughout your home. We are one of Australia’s largest water suppliers delivering around 367 billion litres of high-quality drinking water from 45 surface water sources, 85 groundwater sources and two major desalination plants to over 1.3 million properties through 34,779 km of water mains. Water hardness is the concentration of calcium and magnesium salts in the water supply.User manuals for new appliances sometimes recommend that you check water hardness levels in your water supply before connecting them.The below table provides water hardness results during the 2018/19 financial year. “The dishwasher is set at the factory for a hardness level of 0.2 – 0.7 mmol/l (1- 4 °d )” and “Mains water with a hardness level higher than 0.7 mmol/l (4 °d –German scale) needs to be softened. This lowers the level because calcium rich water is pumped out of the pool and then replaced with tap water with very low calcium levels. These include the type of minerals present, pH, alkalinity, dissolved oxygen and temperature. Once a week or fortnightly depending how many pods you go through. Very hard water is likely to cause scale (insoluble calcium and magnesium compounds) to form on the inside of pipes and boilers. The typical hardness level of water delivered in South East Water's area is between 12 – 45 mg/L. Within industry, the concentration of Cations in water affect pipelines, irrigation and farming equipment. Water in most areas of Perth is hard and has high concentrations of TDS. For example, hard water with the build-up of Calcium and Magnesium salts. Keeping our community safe COVID-19 Safety ... a huge issue and time consuming to clean Bathroom and Glass Save your hot water systems The only way to get rid of water hardness is from a water softener, filters and electric units don’t work. User manuals for new appliances sometimes recommend that you check water hardness levels in your water supply before connecting them. – The water softener requires reactivation salt. This means that the water being supplied to South East Water customers is considered "soft" by international standards.© 2020 South East Water Corporation   ABN 89 066 902 547You may be trying to access this site from a secured browser on the server. Water softeners work by removing the calcium, iron and magnesium, via ion exchange, making hard water, soft. The Australian Drinking Water Guidelines (2004) state that there are no health guideline values for total hardness, but an aesthetic value is suggested at 200 mg/L CaCO 3 (which is reasonably hard water).