|
Water in the Swimming Pool |
||
| WATER The Water Cycle Water in a Pool Water compared Pool Processes POOL PROCESSES CHEMISTRY IN OZONE DISINFECTION NEW IDEAS Hannah Morgan, University of Bristol, School of Chemistry, hm9921@bris.ac.uk |
Water in a Swimming Pool is very different to water in the sea and even in a tap. Water in England and Wales must follow the rules set by the water quality standards in the Water Supply (Water Quality) Regulations 1989 which are in line with EC Directives. The World Health Organisation, WHO, have rules which reflect worldwide standards. Ofwat governs most of the UK water rules. Pool water differs from mains water, not just because tap water is too turbid from pool water, but also because it needs to contain many different chemicals. Some of the guidelines that pool water must comply with, with tap water values in brackets are as follows: Turbidity: less than 0.5 NTU (4 NTU) Temperature: 27-30 ºC (25 ºC) pH: 7.2 min, 7.8 max Sulphate: 360mg SO4/l (250mg SO4/l) Conductivity: 3000mg/l, c.4250microsiemens/cm (1500microsiemens/cm) |
|