Navi Mumbai Activists Sound Wetland Emergency Alarm on World Water Day
Environmental activists in Navi Mumbai have declared a 'wetland emergency' following alarming laboratory test results that show three critical flamingo habitats have turned toxic. The warning was issued on World Water Day, observed on March 22, highlighting a severe ecological crisis in the region.
Flamingo Habitats Under Severe Stress
The deteriorating condition of DPS Lake, NRI Lake, and T S Chanakya Lake in Nerul has raised significant concerns. These water bodies serve as satellite wetlands for the Thane Creek Flamingo Sanctuary (TCFS), a designated Ramsar site of international importance. According to B N Kumar, director of the NatConnect Foundation, the absence of flamingos this season serves as a visible ecological signal of the crisis. Flamingo season in Navi Mumbai typically runs from November to May, with peak viewing from January to March, making their non-arrival particularly alarming.
Laboratory Tests Reveal Toxic Water Conditions
Water sample tests commissioned by the NatConnect Foundation at the Thane-based SSAS Laboratory indicate a system under severe stress. Four key water quality indicators—Total Dissolved Solids (TDS), pH, Biochemical Oxygen Demand (BOD), and Chemical Oxygen Demand (COD)—paint a consistent picture of decline. Activists have communicated these findings to Prime Minister Narendra Modi and Maharashtra Chief Minister Devendra Fadnavis, urging immediate action.
TDS levels were recorded between 17,000 and 23,000 mg/L, far exceeding the healthy wetland norm of 5,000 mg/L. This indicates over-concentrated, stagnant water lacking natural tidal flushing. pH levels were above 9, well outside the safe range of 6.5 to 8.5, pointing to alkaline stress. BOD values ranged from 14.8 to 23.6 mg/L, significantly higher than the safe 3 to 5 mg/L, signaling heavy organic pollution and oxygen depletion. COD levels were between 47.5 and 73.5 mg/L, against a norm of 20 to 30 mg/L, confirming substantial chemical contamination.
"Put simply, all four indicators tell the same story—the water is not moving as it should in a healthy intertidal wetland," Kumar explained, attributing the issue to blocked or restricted tidal flow.
Governance Failures and Ecological Consequences
Activists have squarely blamed governance failures for the crisis. Instead of being regularly flushed, the wetlands are turning into stagnant, polluted basins. Nandakumar Pawar, an environmental activist, alleged that the City and Industrial Development Corporation (Cidco) is "largely responsible for what has happened." He further criticized regulators, including the Maharashtra Coastal Zone Management Authority and the forest department, for "simply looking the other way."
The ecological consequences are dire. Flamingos depend on algae and microorganisms that thrive in balanced conditions. As water quality deteriorates, the food chain collapses, transforming feeding grounds into stressed habitats. While flamingos have adapted to degraded sites in the past, their current absence suggests the system has crossed a critical threshold.
Calls for Accountability and Immediate Action
Environmentalists are calling for urgent intervention. Rekha Sankhala of the Save Flamingos and Mangroves Forum described the wetlands as once being a source of pride, now being "destroyed in full view." She urged authorities to treat the situation as a public health emergency, warning that once lost, these ecosystems cannot be restored within our lifetimes.
Sandeep Sareen of NMEPS emphasized that the lab results expose "toxic waters" driven by unchecked development. "Cidco's apathy—putting concrete over conservation—is destroying these wetlands despite court orders," Sareen stated, likening flamingos to "the canary in our ecosystem's coal mine."
Pamela Cheema, another environmental activist, expressed shock at the degeneration of these well-known water bodies. "Cidco's deliberate neglect in a time of climate crisis has put groundwater and biodiversity at risk," she said, calling for immediate government intervention. Notably, Cidco has refused to acknowledge these areas as wetlands, further complicating conservation efforts.
A Moral Imperative for Conservation
Bittu Sahgal, founder of the Sanctuary Nature Foundation, framed the crisis as a moral question: "How do we forgive those who participate in the desecration of such an exquisite Mumbai heritage—especially when they know it truly belongs to our children?" This sentiment underscores the broader implications of the wetland emergency, linking environmental health to intergenerational responsibility.
As Navi Mumbai grapples with this escalating crisis, activists continue to press for accountability and swift action to salvage these vital ecosystems before irreversible damage occurs.
