Nature · Sub-pillar 8.1

Air and water

Air quality, water availability and quality, and the health of rivers and groundwater.

What is air and water?

Air and water is sub-pillar 8.1 of the 47 BH framework for a developed Bharat by 2047, the first of five sub-pillars under the Nature pillar. It asks about the air people breathe, whether water is available and clean, and about the health of India's rivers and groundwater.

Why it matters for 2047

Nothing is more basic than air and water, and nothing in India's development has lagged further behind its income. A country can grow at seven per cent and still have its capital breathe air two and a half times the national standard for most of the year. The damage is paid in lungs, hearts and years of life, mostly by people who did not cause it.

Water is the quieter crisis. India pumps more groundwater than any other country, its rivers carry the sewage of cities that treat only part of what they produce, and the monsoon that fills both is becoming less reliable. Tap water has reached most villages in a decade; whether the water in the tap is clean and will still be there in 2047 is the harder question.

These are also the clearest tests of whether growth and nature can be reconciled. Countries that cleaned their air and rivers did so after reaching India's income level, by choosing to. The choice is available now, and the cost of waiting compounds.

Where India stands

  • 102

    micrograms per cubic metre was Delhi's annual average PM2.5 in 2025-26, two and a half times the national standard of 40, according to a parliamentary reply; 65 of the 130 cities in the National Clean Air Programme met the PM2.5 standard that year and 14 met the PM10 standard, up from 6 in 2017-18.[1]

  • 60%

    of India's districts, 447 of 749 analysed, breached the annual PM2.5 standard between March 2024 and February 2025 in a satellite-based analysis by the Centre for Research on Energy and Clean Air, an independent group; its 2025 city review found 103 of 231 monitored cities over the standard and none meeting the WHO guideline.[2][3]

  • 296

    polluted river stretches on 271 rivers were identified by the Central Pollution Control Board in its 2025 assessment, down from 351 in 2018; 37 were in the most critical category, and Maharashtra (54), Kerala (31) and Madhya Pradesh (18) had the most.[4]

  • 10.8%

    of India's groundwater assessment units were over-exploited in 2025, down from 17.2% in 2017, with extraction at 60.6% of the annual extractable resource nationally; 82.09% of rural households had a tap water connection by July 2026, up from 16.71% in 2019.[5][6]

The trend in both air and water has turned, slowly. More than a hundred of the programme cities have cleaner air than in 2017-18 and the number meeting the standard is rising; polluted river stretches have fallen by a sixth since 2018; the share of groundwater units being pumped dry has fallen by a third; and tap water has gone from one rural home in six to four in five. [1][4][5][6]

The level is still dangerous. Delhi's air is two and a half times the Indian standard and twenty times the WHO guideline, three in five districts breach the standard, and no monitored city meets the guideline the world's health body sets. [1][2][3] Nearly three hundred river stretches remain too polluted for bathing, over a tenth of groundwater units are over-exploited, and the country still draws three-fifths of what its aquifers can give each year. [4][5]

A note on the numbers: the official air figures count cities with monitors and so understate rural exposure, which is why 47 BH also shows an independent satellite-based district analysis and labels it; the river count uses a single pollutant, biochemical oxygen demand above 3 mg/l, and depends on where samples are taken; groundwater units are assessed every year by the Central Ground Water Board with states; tap connections count pipes, not water quality or hours of supply. India does not yet publish a single population-weighted national PM2.5 figure, and 47 BH will add one when it does.

On the 47 BH report card

Every 15 August, 47 BH reports how far India has come on each sub-pillar. For this sub-pillar, the headline indicators are:

  • Annual PM2.5 in major cities and share of cities and districts meeting the standard (CPCB; independent analyses labelled as such).
  • Number of polluted river stretches and critical-category stretches (CPCB).
  • Share of groundwater units over-exploited and extraction as a share of recharge (Central Ground Water Board).
  • Rural tap water coverage and water quality testing (Jal Jeevan Mission).

Two lenses on air and water

City and village

47 BH asks whether the village that cooks on firewood and the city that sits under a winter smog face the same air, and whether either knows it. Monitors are in cities; the satellite says the villages of the Indo-Gangetic plain breathe much the same air. Rivers are dirtiest where cities meet them; groundwater is most over-drawn where farms are.

Learn, avoid, protect

Learn
What can India learn from countries that halved their urban air pollution in two decades through fuel standards, industrial controls and public transport, that made polluters pay to clean rivers, and that priced groundwater so that farmers had reason to save it?
Avoid
Which mistakes should it avoid, such as fighting pollution city by city when it moves across a whole airshed, counting taps rather than testing water, or letting the aquifers that feed half of irrigation run down for want of a rule on who may pump?
Protect
What of its own should it protect, such as the monsoon-fed rivers and wetlands that have sustained civilisations, the village tanks, stepwells and johads that stored water before pipes, and the public monitoring network that lets citizens see what they breathe?

What this sub-pillar does not cover

Each topic has one home in the framework. These related topics sit elsewhere:

Questions about air and water

How polluted is Delhi's air?

Delhi's annual average PM2.5 was 102 micrograms per cubic metre in 2025-26, two and a half times the national standard of 40 and about twenty times the WHO guideline of 5, according to a parliamentary reply on the National Clean Air Programme. [1]

How many Indian cities meet the air quality standard?

65 of the 130 National Clean Air Programme cities met the PM2.5 standard in 2025-26 and 14 met the PM10 standard, up from 6 in 2017-18; an independent review found 103 of 231 monitored cities over the PM2.5 standard in 2025, and a satellite analysis found 447 of 749 districts over it. [1][2][3]

How many of India's rivers are polluted?

The Central Pollution Control Board identified 296 polluted stretches on 271 rivers in 2025, down from 351 in 2018, with 37 in the most critical category. [4]

Is India running out of groundwater?

Nationally, extraction was 60.6% of the extractable resource in 2025 and 10.8% of assessment units were over-exploited, down from 17.2% in 2017, according to the Dynamic Groundwater Resources Assessment. The picture is far worse in Punjab, Haryana, Rajasthan and parts of the south. [5]

Why are air and water a development question?

Because development that leaves people breathing poison and drinking from dying rivers has failed at its first duty. Clean air and water are the floor beneath every other pillar, and the countries India wants to join all laid that floor.

Sources

  1. Ministry of Environment, Forest and Climate Change, parliamentary reply on the impact of the National Clean Air Programme, Press Information Bureau, 24 July 2026; as summarised by SuperKalam. https://superkalam.com/current-affairs/24-07-2026/parliament-question-impact-of-national-clean-air-programme-on-pm2-5-levels-7d7744de-8cbf-46f7-bcfa-3989da5400c6
  2. Centre for Research on Energy and Clean Air, "Tracing the Hazy Air 2026: Progress Report on National Clean Air Programme", January 2026. An independent research organisation. https://energyandcleanair.org/publication/2026-progress-report-on-national-clean-air-programme/
  3. Centre for Research on Energy and Clean Air, satellite-based district PM2.5 analysis, March 2024 to February 2025, as reported by DT Next (PTI), November 2025. https://www.dtnext.in/news/national/delhi-worst-in-pm25-pollution-447-districts-breach-national-air-quality-norm-analysis-854399
  4. Central Pollution Control Board, "Polluted River Stretches for Restoration of Water Quality", 2025 assessment; figures as summarised by Anantam IAS, May 2026. Report: cpcb.nic.in. https://anantamias.com/cpcb-report-on-river-pollution/
  5. Ministry of Jal Shakti, "Dynamic Groundwater Resources Assessment, 2025", Press Information Bureau, 29 January 2026. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2220203&reg=3&lang=1
  6. Ministry of Jal Shakti, "Extension of the Jal Jeevan Mission and Transfer of Rural Water Supply Schemes", Rajya Sabha written reply, Press Information Bureau, 27 July 2026. https://www.pib.gov.in/PressReleasePage.aspx?PRID=2290048&reg=3&lang=1

47 BH cites every figure so that it can be checked. If you find an error, it will be corrected openly and the date below will change.

All sub-pillars of Nature

Back to the Nature pillar  ·  47 BH home