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Table 5

Structure of the assessment verdict for selected factors

IndicatorFactorScoreDescription
Scope of the water treatment technology Legislation Not assessed; 
All standard indicators of the quality of drinking water are below the specified limit and no exemption is made regarding the quality of drinking water; 
An exemption is made regarding the quality of drinking water or it is expected that after the amendment of the requirements for drinking water, water conforming to the indicator with the threshold indicator (TI) will not be produced; 
Some of the indicators with the highest threshold indicator (HTI) reach such values that these values will not be satisfactory after an amendment to legislation. 
Frequency of unsatisfactory results of analyses Not assessed; 
The limit values of HTI indicators are not exceeded; TI indicators are exceeded at a max. of up to 1%; 
The limit values of TI indicators is exceeded by 1–2%, in HTI indicators up to 1%; 
The limit values of TI indicators is exceeded by more than 2%, in HTI indicators over 1%. 
IndicatorFactorScoreDescription
Scope of the water treatment technology Legislation Not assessed; 
All standard indicators of the quality of drinking water are below the specified limit and no exemption is made regarding the quality of drinking water; 
An exemption is made regarding the quality of drinking water or it is expected that after the amendment of the requirements for drinking water, water conforming to the indicator with the threshold indicator (TI) will not be produced; 
Some of the indicators with the highest threshold indicator (HTI) reach such values that these values will not be satisfactory after an amendment to legislation. 
Frequency of unsatisfactory results of analyses Not assessed; 
The limit values of HTI indicators are not exceeded; TI indicators are exceeded at a max. of up to 1%; 
The limit values of TI indicators is exceeded by 1–2%, in HTI indicators up to 1%; 
The limit values of TI indicators is exceeded by more than 2%, in HTI indicators over 1%. 

Note: Czech law applies two types of limits for drinking water quality. Each of these two limits has a different relation to the quality of supplied drinking water. The threshold indicator (design TI) applies to health non-hazardous indicators such as iron. The second type is the highest threshold indicator (design HTI) which can be interpreted for health hazardous indicators such as arsenic and lead.

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