$1\mathrm{.}6.$ Below are four key physical wastewater characteristics. Describe them and give their units of

measurements.

a$)$ Color

b$)$ Odour

c$)$ Temperature

d$)$ Turbidity

$1\mathrm{.}7.$ Give four organic matter chemical characteristics of untreated wastewater.

$1\mathrm{.}8.$ Give two as inorganic matter chemical characteristics of untreated wastewater that are

classified.

$1\mathrm{.}9.$ What causes wastewater to septic in a sewer?