Secondary drinking water monitoring

Table 1.4 Secondary Drinking Water Monitoring Requirements...

EPA also sets National Secondary Drinking Water Regulations for contaminants that affect the aesthetic (e.g., taste, color or odor), cosmetic (e.g., skin or tooth discoloration) or technical (e.g., corrosivity or scaling) qualities of drinking water. These non-enforceable guidelines include secondary MCLs and recommendations for monitoring (EPA, 2004b). 

The first of safety states is defined if delivered water is of good quality, in required quantity, under needed pressure. The second safety state includes exploitation events such that the system manager has to interfere only in one operation parameter in order to return to the full safety state. The acceptable safety menace state accepts the reduction of production capacity to 70% of full daily water demand. The third state is the consequence of essential decrement of all three parameters such that their co-occurrence influences on the secondary drinking water contamination. Thus this state forces an operator to undertake repair actions and increase the monitoring intensity of delivered water quality. 

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