Parameter

Septic tank entry

Septic tank exit

Typha filter exit

Average

Average

Max

Min

Average

Max

Min

COD (mg/L)

1347

291

500

186

155

358

48

BOD5 (mg/L)

259

78

101

59

8

11

6

SS (mg/L)

76

35

40

33

1

3

1

${\text{N-NH}}_{\text{4}}^{\text{+}}$ (mg/L)

248

53

146

15

8

2

0

${\text{N-NO}}_3^{-}$ (mg/L)

30

30

15

${\text{P-PO}}_{\text{4}}^{\text{3}-}$ (mg/L)

48

47

8.6

pH

8.2

8.5

7.9

EC

2950

3400

1710

Fecal coliforms FCU (100 mL)

8.30E+05

3.80E+04

5.40E+04

2.30E+04

170

300

0

Fecal coliforms (Log10)

5.9

4.6

4.7

4.4

2.2

2.5

0

Helminth eggs (Larvae eels)

0

0