What's in the water
Too much, over years, causes fluorosis — mottling children's teeth, stiffening joints, bending limbs and spines while people are still young. One of India's most widespread groundwater poisons.
No cure — only preventionStains water yellow-brown and ruins its taste; at high levels it stops being a nuisance and becomes a health risk, linked to gastrointestinal problems and long-term tissue damage.
Nuisance turned health riskIron's constant companion in Indian wells. Long-term exposure is associated with neurological effects — a particular concern for children's developing brains.
Risk to children's brainsAn industrial-belt contaminant leaching in from effluent and runoff. Certain forms are toxic and carcinogenic with prolonged exposure.
Industrial beltsNitrate seeps in from fertiliser and animal waste and is especially dangerous for infants. Industrial dyes carry their own chemical load into shared water.
Dangerous for infantsIn over-pumped aquifers, naturally occurring uranium leaches into the groundwater — recorded in Rajasthan's over-extracted zones and parts of Uttarakhand. Its chemical toxicity builds in the kidneys with long-term exposure.
Over-extracted aquifersSharply reduced as water passes through the system, cutting the everyday risk of waterborne illness.
Reduced — see our honest noteAn honest note: Jal Setu strongly reduces harmful bacteria, but for water of unknown microbial quality we still recommend a final step such as boiling or solar disinfection. We would rather tell you that than overpromise.
Where it hits hardest
Over 94% of Rajasthan's drinking water comes from the ground — and all 33 districts are classified fluorosis-prone. The state holds 16,560 fluoride-affected villages, more than half of India's total, with around 11 million people at risk.
Fluoride has been recorded up to 44 mg/L — against a safe limit of 1.5. In a 2023 study of 18,000+ tribal residents, 69% had dental fluorosis and 27% skeletal fluorosis.
Half of India's affected villagesThe hill districts are relatively clean. The industrial Terai belt is not — in districts like Udham Singh Nagar and Haridwar, chromium, iron, manganese, zinc and nitrate lead the pollutants, driven by industrial discharge and farm runoff.
Iron and manganese are the daily reality: staining water, souring its taste, crossing into genuine health risk. In one mining-affected belt, iron exceeded the safe limit in 95% of tested wells.
Industry meets groundwater