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Table 1

Effluent criteria for water reuse according to Joint Ministerial Decision 145116/2011 

ParameterMaximum permissible concentration (Table 3, Annex I, JMD 145116/2011)Maximum permissible concentration (Table 2, Annex I, JMD 145116/2011)Percentage of samples' compliance
BOD 10 mg/l 10 mg/l 80% 
COD 60 mg/l 60 mg/l 80% 
TSS 2 mg/l 10 mg/l 80% 
Total Nitrogen, TN ≤ 15 mg/l ≤ 15 mg/la mean annual value 
Turbidity 2 NTU 2 NTU median 
E. coli <2 cfu/100 ml <5 cfu/100 ml 80% 
 <20 cfu/100 ml <50 cfu/100 ml 95% 
ParameterMaximum permissible concentration (Table 3, Annex I, JMD 145116/2011)Maximum permissible concentration (Table 2, Annex I, JMD 145116/2011)Percentage of samples' compliance
BOD 10 mg/l 10 mg/l 80% 
COD 60 mg/l 60 mg/l 80% 
TSS 2 mg/l 10 mg/l 80% 
Total Nitrogen, TN ≤ 15 mg/l ≤ 15 mg/la mean annual value 
Turbidity 2 NTU 2 NTU median 
E. coli <2 cfu/100 ml <5 cfu/100 ml 80% 
 <20 cfu/100 ml <50 cfu/100 ml 95% 

afor unrestricted irrigation in nitrate vulnerable zones (NVZ), according to 91/676/EEC Directive (EC 1991b).

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