Elements and Performance Criteria

RANGE STATEMENT

The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.


Key people and outside agencies may refer to:
Essential Services Officers
Environmental Health Officers
Water Treatment Plant Operator (ESO)
Aboriginal Technical Worker
Relevant water authority


Processes used may include, but are not limited to some of the following:
Analysing where the water source is, and using problem solving skills to determine what the likely contaminants are nearby, e.g. If a water source is near a known mine site it might be useful to have the water tested for the metals that are found in the mine etc.
Analysing physical properties of water, e.g. colour, taste and odour
Sampling water for chemical and/or biological properties. For example, for biological samples taken from a tap, the tap must first be sterilised
Water needs to be run through the tap to clear any water that may still be sitting in the pipes.
The spout of the tap then needs to be heated for approximately one minute to kill any bacteria before taking the sample
It is important that whoever is taking the sample does not let their hands or fingertips come into contact with the water, neck of the container, or inside of the container
A date and a time should be written on the container, and the sample chilled
The sample needs to get to the laboratory within 5-12 hours of it being taken. In remote areas, sample taking needs to be co-ordinated appropriately in accordance with flight schedules etc.
For biological samples taken from flowing or still water different sampling techniques are used to prevent contamination from the hands or arm of the person taking the sample
Analysing test results in accordance with water quality guidelines, e.g. the Australian Water Quality Guidelines
Water treatment and disinfection e.g. filters, chlorination, distillation, boiling water for approximately 10 minutes if there is no form of disinfection in the community or outstation, etc.


Responsibilities of the worker will depend upon the negotiated job role and may include the following:
Observing the water for strange tastes, smells or colours and making referrals where appropriate
Identifying likely contaminants from everyday community knowledge
Sampling and/or assisting in taking water samples
Participating/assisting with water treatment and disinfection processes
Analysing and/or assisting in analysing test results in accordance with water quality guidelines e.g. the Australian Water Quality Guidelines


Findings may include:
Signs of possible contamination, e.g. strange tastes, smells or colours,
Contaminants identified from everyday community knowledge and/or observations
Results from water tests
Local indicators of contaminants e.g. additional presentations at the clinic for problems such as stomach pains, vomiting or diarrhea, particularly with children


Follow up measures and options may include:
Discussing strategies to address water quality issues e.g. alternative forms of treatment/disinfection, further sampling to clarify results if required, etc.
Health promotion/education to community members e.g. care of water supply systems, and strategies to prevent contamination of the water supply source in the community
Promoting the boiling of water if necessary, etc.


The follow up measures implemented in accordance with established procedures and job role may include:
Filing test results and following up on any issues of concern if appropriate
Assisting with treatment/disinfection procedures if necessary
Repeating water sampling tests to determine if there has been any improvement in the water quality after disinfection
Assisting the council to obtain information on alternative treatment processes and costs if required


Evaluation of follow up measures may include:
Determining whether or not there has been an improvement in water quality test results
Assessing if there has been a drop in clinic presentations for conditions such as stomach pains, vomiting or diarrhoea, particularly with children if relevant
Evaluating the success of community education/health promotion strategies used in terms of community control and disease prevention
Evaluating the success of networks formed between the worker, key people and outside agencies


Documented may include:
Verbal or written reports in either first language or English
Oral reports on tape in either first language or English ie: comparing water quality test results on tape to determine if there has been any improvements, interviewing Aboriginal Health Workers or other clinic staff in relation to possible drops in clinic presentations for conditions such as stomach pains, vomiting or diarrhoea, particularly with children if relevant etc.


Advice may be in relation to:
Alternative treatment/disinfection strategies, costs etc.
Strategies to promote more successful education/health promotion outcomes in the community
Specific environmental health issues in relation to water supply

EVIDENCE GUIDE

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for this Training Package.

Critical aspects for assessment and evidence required to demonstrate this competency unit:
The individual being assessed must provide evidence of specified essential knowledge as well as skills
Assessment of this performance should take place more than once and over a period of time


Access and equity considerations:
All workers in the health industry should be aware of access and equity issues in relation to their own area of work
All workers should develop their ability to work in a culturally diverse environment
In recognition of particular health issues facing Aboriginal and Torres Strait Islander communities, workers should be aware of cultural, historical and current issues impacting on health of Aboriginal and Torres Strait Islander people
Assessors and trainers must take into account relevant access and equity issues, in particular relating to factors impacting on health of Aboriginal and/or Torres Strait Islander clients and communities


Context of and specific resources for assessment:
Competency is best demonstrated in the workplace as part of on the job activities
Competency can also be assessed in constructed simulation
Access to resources required to take water samples, such as:
specimen jar
pen for recording date and time of sample
a gas or methylated spirit burner if sampling from a tap (can use a piece of cotton wool attached to the end of a length of wire and soaked in methylated spirits if resources are not available), eskies and freezer bricks, etc
Simulation of realistic workplace setting for assessment