1 General information
1.1 System layout
Provide the address of the system and a layout diagram for the system. The following must be indicated on the layout diagram:
- location where the water is harvested/abstracted
- storage apparatus
- treatment apparatus
- reticulation network
- system schematic layout.
1.2 Duty of care holder
Provide the contact details for the personnel who have the duty of care to provide safe water for the intended purposes.
1.3 Water users
Provide details of the population using the water and the scope of the contractual agreement (if any).
2 Drinking water supply system information
2.1 Water harvesting / abstraction sources and methods
Provide details on the point sources of:
- drinking water harvesting/abstraction
- source identification codes
- method of harvesting/abstraction
- estimated volume of water that will be harvested/abstracted.
2.2 Storage system
Provide the following details on the storage system:
- details of storage tank
- security (accessibility to public)
- turnover time
- whether the system is properly sealed (accessibility to animals/insects)
- maintenance
- structure soundness (Australian Standards compliance).
2.3 Treatment system
Provide details of the treatment system that will be used to treat the water.
Discuss the validation of treatment efficacy to remove contaminants from raw water.
Include details of alternative treatment systems that will be used in an event of primary treatment system failure.
An initial raw water quality assessment of the assessable characteristics is required. Refer to the Small community model assessable sampling grid (PDF 91KB).
2.4 Reticulation network
Map out the zones of the drinking water system.
2.5 Systems operation
Describe briefly the systems operation from source to reticulation.
2.6 Operational monitoring and maintenance
Provide details on the operational monitoring and maintenance of all the major apparatus within the drinking water system including:
- availability of operational monitoring and maintenance manual/procedures/checklists
- personnel in charge of operational monitoring and maintenance
- operational monitoring and maintenance frequencies.
2.7 System operators competency
Provide details on the competency of personnel that will operate the system.
2.8 Materials and substances in contact with drinking water
Ensure all chemicals, products and any substances that come in contact with the water are AS/NZS 4020:2005 compliant or Department of Health approved.
For further information refer to the publication Materials and substances in drinking water (PDF 166KB).
3 Catchment
3.1 Map of catchment area
Provide a map of the catchment area. The map should indicate the following items:
- area where the water is harvested
- extent of the recharge area
- hydrological flow
- location of risks (possible sources of contamination)
- bore head/reservoir protection zones.
3.2 Risk assessment of catchment area
Provide details of the risk assessment of the catchment area identifying all the possible sources of contamination that can be introduced into the system.
The following items must be included in the assessment:
- risks
- hazards
- management priority (high, medium, low)
- consideration for management
- current preventative measures
- recommended protection strategies.
3.3 Catchment monitoring and maintenance
Provide the details on how the catchment will be monitored and maintained to ensure the detection and removal of any contamination.
4 Monitoring requirements
Refer to the Small community model assessable sampling grid (PDF 91KB) for the requirements of the ongoing monitoring program.
Before the system is approved a full assessment of all the characteristics listed on the sampling grid needs to be reviewed by the Department of Health.
Exemptions for some characteristics can be given if objective evidence can demonstrate the negligibility of risk for the characteristics.
5 Incidence response procedure
A risk assessment needs to be conducted on the system as well as the catchment.
The system risk assessment should include all possible incidences that will affect the water quality.
The following items should be addressed in the incidence response procedure:
- incident giving rise to hazard
- possible causes
- consequences
- risk (likelihood and consequence)
- response action and personnel in charge
- reporting protocols
- preventative measures.
6 Reporting requirements
Refer to Systems compliance and routine reporting requirements for small community water providers (PDF 224KB).
More information
Water Unit,
Environmental Health Directorate
Department of Health
Telephone: 02 9222 2000
Email: ehinfo@health.wa.gov.au