Parameters

WHO 4^th edition (2011) Guideline Value

SSWS₁

(Egbu)

Mean

SSWS₂

(Timber Market)

Mean

SSWS₃

(FUTO)

Mean

DOWNSTREAM (Mbirichi)

CONTROL POINT

Total bacteria count, cfu/ml

Absent

4.5 × 10⁴

3.5.0 × 10⁴

4.0 × 10⁴

3.0 × 10⁴

2.0 × 10³

3.0 × 10³

1.3 × 10³

2.1 × 10³

1.0 × 10³

1.0 × 10³

1.3 × 10³

1.1 × 10³

0.8 × 10³

0.2 × 10³

Total Coliform Count, cfu/ml

Absent

2.3 × 10²

3.0 × 10²

5.0 × 10²

3.1 × 10²

2.0 × 10³

3.0 × 10³

4.0 × 10³

3.0 × 10³

3.3 × 10³

3.0 × 10³

3. × 10³

4.1 × 10³

1.0 × 10³

0.5 × 10³

Total E. coli Count, cfu/ml

Absent

1.0 × 10²

1.3 × 10²

1.0 × 10²

1.1 × 10²

2.0 × 10²

3.0 × 10²

4.0 × 10²

3.0 × 10²

4.0 × 10³

4.0 × 10³

4.3 × 10³

4 × 10³

2.0 × 10³

0.2 × 10³