*1.4.1 Specific objectives*

The specific objectives were to determine the design parameters of a vermifilter (hydraulic loading rate, hydraulic retention time, soil type and earthworm species); to characterise the efficiency of the vermifilter for the removal of the physicochemical and microbiological parameters (pH, BOD, turbidity, nitrates, phosphates, TDS, TSS and total coliforms) from the wastewater in the septic tank and to compare the physicochemical and microbiological parameters of the vermifiltered water against EMA standards.
