System

Criteria for use^a

Applied removal efficiencies per type of technology

Residential population density (pp/ha)

Status 2020^b

COD (%)

BOD (%)

TN (%)

TP (%)

Coliforms (%)

ST

AT/RR

ST

AT/RR

ST

AT/RR

ST

AT/RR

ST

AT/RR

On-site

<100

Rural/Urban

40^a

45

15

5

90

CBS

>100

Rural

80^a

85

15

5

99

Medium Central

100 - 250

Urban

80

88

85

97

15

90

5

67

99

99.9

Central

>250

Urban

88

97

73

29

99.9