{"id":324383,"date":"2025-01-23T18:30:23","date_gmt":"2025-01-23T13:00:23","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=324383"},"modified":"2025-01-23T18:30:23","modified_gmt":"2025-01-23T13:00:23","slug":"urbanization-affecting-groundwater","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/urbanization-affecting-groundwater\/","title":{"rendered":"Urbanization affecting groundwater"},"content":{"rendered":"

Source<\/strong>: The post urbanization affecting groundwater has been created, based on the article \u201cAddress India\u2019s worsening urban groundwater crisis<\/strong>\u201d published in \u201cLive mint<\/strong>\u201d on 23rd January 2025<\/p>\n

UPSC Syllabus Topic:<\/strong> GS Paper3-Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment<\/p>\n

Context<\/strong>: The article highlights India’s groundwater crisis, with contamination and over-extraction worsening due to urbanization, fertilizer use, and poor sewage management. It calls for sustainable water management through advanced technologies, decentralized wastewater treatment, rainwater harvesting, and circular water economy initiatives.<\/p>\n

For detailed information on India\u2019s Annual Groundwater Quality Report 2024<\/strong> read this article here<\/a><\/p>\n

Why is groundwater important?<\/strong><\/h2>\n
    \n
  1. Groundwater is a critical source of urban water supply worldwide, supporting nearly half the urban population.<\/li>\n
  2. Aquifers store larger water volumes than artificial reservoirs, ensuring water availability during droughts.<\/li>\n
  3. For example, the Ogallala Aquifer in the US supplied 500 cubic kilometers of water in 40 years, exceeding Egypt\u2019s Lake Nasser.<\/li>\n
  4. Groundwater is often cleaner than surface water, as aquifers naturally protect it from contamination.<\/li>\n
  5. It ensures reliable water supply, especially in regions with limited surface water resources or during periods of irregular rainfall.<\/li>\n<\/ol>\n

    How is urbanization affecting groundwater?<\/strong><\/h2>\n
      \n
    1. Urbanization is drastically impacting groundwater due to increased water demand and inadequate sewage treatment infrastructure.<\/li>\n
    2. By 2036, India’s urban population is expected to surge to 600 million, intensifying the strain on groundwater resources.<\/li>\n
    3. Urban areas, contributing 70% to India’s GDP, face significant water management challenges.<\/li>\n
    4. Of 712 surveyed districts, 102 are overexploited with groundwater extraction rates exceeding 100%.<\/li>\n
    5. Specifically, urban centers in Punjab, Delhi, Haryana, and Karnataka are experiencing nearly depleted groundwater levels, highlighting the critical need for improved water management and conservation practices.<\/li>\n<\/ol>\n

      What are the main causes of groundwater contamination?<\/strong><\/h2>\n
        \n
      1. Excessive Fertilizer Use<\/strong>: Leads to nitrate contamination; 20% of groundwater samples in India have nitrate levels exceeding 45 mg\/l, with some districts over 40%.<\/li>\n
      2. Poor Waste Management<\/strong>: Urban areas lack sewage treatment, as in 2021, only 31,841 MLD<\/strong> of sewage was treated out of 72,368 MLD<\/strong> generated.<\/li>\n
      3. Arsenic Contamination<\/strong>: Severe in states like West Bengal, Uttar Pradesh, and Assam.<\/li>\n
      4. Fluoride Pollution<\/strong>: Found in over 9% of groundwater samples.<\/li>\n
      5. Urbanization Impact<\/strong>: Impervious surfaces hinder recharge, and untreated sewage pollutes rivers and aquifers.<\/li>\n<\/ol>\n

        What solutions can improve groundwater management?<\/strong><\/h2>\n
          \n
        1. Circular water economy:<\/strong><\/li>\n<\/ol>\n