Contamination by physical particles can lead to the water becoming unacceptable in appearance, taste or odour, and may act as a substrate for micro-organisms to live on and replicate. Some of the following improvements at the source can be effective in preventing them from entering the water supply:
- Install screens or filters for rainwater harvesting systems; protection of inlets and the setting up of a cleaning regime for any collection gutters will help prevent/reduce ingress of organic matter into the system.
- Construct storage lagoons or tanks for raw surface? water to allow settlement to occur.
- Regularly maintain treatment equipment e.g. cartridge filters need to be cleaned or replaced according to manufacturer’s instructions.
- Install screens and covers on storage tanks to prevent ingress of particles, insects and other small animals etc.
- Regularly carry out visual checks, inspections and cleaning of storage tanks at suitable intervals to reduce sludge or sediment build-up.
- Consider using valves and/or level sensors to help prevent stagnation of water and ensure water turnover occurs.