Greater Chennai Corporation Making Room for More Waste at Perungudi Dump Yard? | Chennai News - Times of India, n.d.). The fact that this enormous dumping facility is located amid a wetland reveals all of the potential issues. The dumpsite, for example, is poorly drained and in close touch with the aquifer, posing a risk of groundwater contamination. In addition, sewage, both untreated and treated, is discharged into the wetlands. Metrowater, the Chennai metropolitan area's water supply agency, has been dumping 32 million litres of sewage straight into the wetlands every year, pushing the TDS (Total Dissolved Solids) over the allowed limit of 500 mg/l to even greater than 2000 mg/L(Roumeau et al., 2015). These pollution sources undoubtedly have a negative impact on the marshland's biological equilibrium. With the presence of contaminants, rainwater that the marsh could previously contain and offer drinking water quality is no longer viable.
Figure 4 Pallaikarnai Marshland's catchment area has been shrinking in recent years as depected Source: (Bhrigu Kalia, Graduate, 2019)
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