Hexavalent Chromium Contamination in Uttar Pradesh Groundwater Exposes Villages to Severe Health Risks

Across multiple villages in the Kanpur Nagar, Kanpur Dehat, and Fatehpur districts of Uttar Pradesh, groundwater and soil have been severely contaminated by industrial chemical waste. Decades of dumping hazardous basic chrome sulphate sludge have caused hexavalent chromium to leach into local aquifers, turning handpump water bright yellow-green and exposing rural residents to chronic health complications.

What Happened

Industrial units in the region have long manufactured chromium sulphate, a chemical supplied to local leather tanneries. Over several decades, untreated and improperly treated chemical sludge was dumped across open lands, highway flanks, and agricultural areas. In villages such as Chhiwali in Fatehpur, residents were supplied industrial waste under the guise of free soil to fill low-lying plots and build houses 15 to 20 years ago.

Over time, the dumped material leached toxic chromium (VI) into the water table. According to Uttar Pradesh government data from blood tests conducted over a five-year period and compiled in a 2025 report, between 73% and 96% of sampled individuals in affected zones had chromium (VI) levels above permissible limits. While regulatory bodies like the National Green Tribunal (NGT) ordered actions—such as shutting down six offending factories in Kanpur Dehat in 2005 and directing the clearance of a 62,225-metric-tonne dump at Rania—contamination remains persistent across the area.

Key Highlights

• State government tests show 73% to 96% of tested residents across affected pockets carry above-permissible levels of hexavalent chromium in their blood.
• Handpumps in multiple settlements deliver bitter, fluorescent yellow-green water, forcing impoverished residents to rely on contaminated sources when piped supplies fail.
• Local healthcare providers report significant increases in chronic liver infections, gastrointestinal disorders, skin rashes, and nail damage among villagers.
• The National Green Tribunal has cited hexavalent chromium as a cause of stomach ulcers, cancers, and severe liver and kidney damage.
• Independent studies show elevated chromium levels extending into parts of neighboring Unnao district, indicating that the affected perimeter may exceed current official boundaries.

Why This Matters

The health consequences for residents in the contaminated belt are severe. The International Agency for Research on Cancer categorizes chromium (VI) as a carcinogen when inhaled, while the NGT reports it causes extensive organ damage. Local medical practitioners, such as Dr. Anurag Sachan in Aung, have recorded a doubling of gastric and skin conditions over the past decade in these areas.

Economic vulnerability exacerbates the crisis. While higher-income households can purchase reverse osmosis (RO) bottled water, low-wage laborers frequently have no option but to consume or wash with tainted handpump water. Although the government has installed piped water infrastructure in select villages, residents report irregular supply, pipeline leaks, and instances of sewage contamination. Furthermore, amicus curiae Katyayni noted to the NGT that none of the three affected districts currently possess free public testing facilities for heavy metals.

What to Watch Next

A research team from the Indian Institute of Technology (IIT) Kanpur, led by Associate Professor Manoj Kumar Tiwari, has commenced a comprehensive study to map the contaminated sites across Kanpur Nagar, Kanpur Dehat, and Fatehpur. The initial mapping phase is slated to take six months, after which appropriate remediation strategies will be evaluated.

Legal and regulatory scrutiny also continues under the NGT, which took cognisance in 2026 of fresh chemical dumps in Purwamir village in Kanpur Nagar. Observers and advocates are watching whether the state government will expand its list of officially designated contaminated villages to include locations like Chhiwali, construct mandated containment walls around former dump sites, and establish local heavy-metal diagnostic facilities.

Frequently Asked Questions

What gives the water its fluorescent yellow-green color?

The coloration is caused by hexavalent chromium, or chromium (VI), a highly reactive chemical derived from basic chrome sulphate sludge dumped by local industrial and tanning chemical operations.

What specific illnesses are linked to this contamination?

Medical personnel and green tribunal reports link hexavalent chromium exposure to liver infections, gastrointestinal disorders, severe stomach ulcers, skin rashes, nail deterioration, and elevated cancer risks.

Are all contaminated areas currently identified by the government?

No. Several locations, including Chhiwali village in Fatehpur and research-tested sites in Unnao district, display elevated levels of chromium contamination but have not been formally designated as affected zones by state authorities.

Source: Based on reporting published by The Hindu.