protection area, Investigate land Keep track of land so that use changes as use changes and submissions they occur. evaluate how they can be lodged, are likely to affect (See Guide S1.1) as appropriate. water quality. No alteration to proposed location of source abstraction when future developments are to present risks to water quality. Lack of awareness of land use changes. Planned management strategy of the not followed. Event: INADEQUATE TREATMENT Possible hazards: Germs; chemical determinands Level of risk: High S2.3.1 Monitor chemical Compliance Start monitoring of and physical with potential source Incorrect parameters of DWSNZ:2000 is water. choice of source water to unlikely to be treatment identify range of achieved. water quality and Problems with its variability. aesthetic studies of quality treatment to determine optimal set-up. S2.3.2 Monitor chemical Technology Start monitoring of and physical selected to treat potential source Incorrect parameters of the water will be water. choice of source to unable to treatment identify range of function within technology water quality and specifications. its variability. Technology selected will be Determine: unable to treat maximum and the source minimum water to the demand for required level water (considering of change future increases of water in demand). quality how water quality is affected by season. Causes Preventive measures Checking preventive measures Corrective action What to check that action is needed
protection area, so that submissions can be lodged, as appropriate. No alteration to proposed location of source abstraction when future developments are to present risks to water quality. Lack of awareness of land use changes. Planned management strategy of the not followed. Investigate land use changes as they occur. (See Guide S1.1) Keep track of land use changes and evaluate how they are likely to affect water quality. Event: INADEQUATE TREATMENT Possible hazards: Germs; chemical determinands Level of risk: High S2.3.1 Incorrect choice of treatment Monitor chemical and physical parameters of source water to identify range of water quality and its variability. studies of treatment to determine optimal set-up. Compliance with DWSNZ:2000 is unlikely to be achieved. Problems with aesthetic quality Start monitoring of potential source water. S2.3.2 Incorrect choice of treatment technology Monitor chemical and physical parameters of source to identify range of water quality and its variability. Technology selected to treat the water will be unable to function within specifications. Technology selected will be unable to treat the source water to the required level (considering future increases in demand). Start monitoring of potential source water. Determine: maximum and minimum demand for water of change of water quality how water quality is affected by season. Causes Preventive measures Checking preventive measures Corrective action What to check that action is needed
new-supplies-feb14-v2.docx