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Wastewater Characteristics Studies

Under Regulation 6 of Environmental Quality (Sewage and Industrial Effluents) Regulations 1979, no person shall discharge or cause or permit the discharge of any of the following substances into any inland waters:

  • Any inflammable solvent;
  • Any tar or other liquids immiscible with water; or
  • Refuse, garbage, sawdust, timber, human or animal waste or solid matter.

The employer is required therefore to conduct a wastewater characteristics study (WWCS) and any effluent discharged into any inland waters must be analyzed in accordance with the methods specified in the Second Schedule of the nineteenth edition of the Regulations.

The scope of the work required carried out by ESI is as follows:

  • Guiding the industry on how to ensure compliance with KEEP, 1979;
  • Performing composite sampling at settling ponds;
  • Performing in-situ measurements to estimate the volumetric flow of effluent discharge;
  • Sending collected effluent samples to an accredited laboratory to ensure analysis of the composite effluent shall be in accordance with the 19th Edition “Standard Methods of the Examination of Water and Wastewater”’ specified in the Second Schedule of the Regulations;
  • Comparing the test parameters with the standard A limit given in the Third Schedule of the Regulations;
  • Identifying and recommending the best method of waste treatment for those parameters which fail to comply with the requirements stipulated by DOE; and
  • Producing a WWCS report on behalf of the client for submission to DOE.