5 months ago
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A survey by the National Environmental Engineering Research Institute (NEERI) has recovered that faecal contamination levels are ‘too galore to count’ (TNC) successful h2o samples collected from prime locations of the Thevara-Perandoor (TP) and Edappally canals successful Ernakulam.
The bureau was entrusted by the Kerala State Pollution Control Board to behaviour a feasibility survey connected processing a process bundle for the attraction of home sewage discharged into the Edappally and Thevara-Perandoor canals successful Ernakulam and Patolithot and Valiyat canals successful Kollam. The survey was initiated aft the National Green Tribunal directed the authorities to instrumentality steps to cheque the indiscriminate degradation of canals caused by amerciable discharge of untreated wastewater into them.
The draught last study connected the feasibility survey recovered that faecal coliform was detected arsenic TNC astatine 4 retired of the 8 illustration locations successful the Thevara-Perandoor canal. In 2 locations, the levels were recorded successful the scope of 2,510 CFU (colony-forming units)/100 ml to 3,000 CFU/100 ml. Faecal coliform was detected arsenic TNC successful 1 of the six sampling locations of the Edappally canal. In the different 4 locations, the levels varied from 201 CFU/100 ml to 20,022 CFU/100 ml.
The faecal coliform levels successful the Patolithot canal ranged betwixt 85 CFU/100 ml to 3,500 CFU/100 ml. In Valiyat canal, the levels varied betwixt 50 CFU/100 ml to 9,450 CFU/100 ml. The NEERI had conducted the feasibility survey successful April 2024 and February and October this year.
The study said that the h2o prime of Edappally, Thevara-Perandoor, Patolithot and Valiyat canals had been threatened oregon impaired owed to discharges of stormwater and home sewage from the catchment area. There is nary existing oregon inadequate sewage attraction installation on the full agelong of the canals. The canals person turned into collectors of pollutants that emanate from assorted drain discharges, it said.
The bureau recommended that the contamination loads discharged into the canals needed to beryllium adequately treated successful the well-designed projected sewage attraction plants earlier being discharged into inland aboveground water.
