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Yamuna Still Toxic Despite Above-Normal Rainfall in Delhi: DPCC Report
DPCC's Water Quality Status report based on April 7, 2026 samples shows the Yamuna remains heavily polluted through Delhi. Dissolved oxygen is NIL in several stretches, while BOD remains high and faecal contamination is widespread, despite above-normal rainfall in March–April 2026.
Why It Matters
The river's ecological health affects aquatic life and public health in Delhi, highlighting the need for expanded sewage treatment and better river-restoration efforts beyond rainfall alone.
Timeline
10 Events
Asgarpur – BOD 58 mg/l; Faecal coliform ~3.1 lakh MPN/100 ml; DO NIL
April 7, 2026
At Asgarpur, BOD rose to 58 mg/l in 2026 (from 56 mg/l in 2025). Faecal coliform levels reached nearly 3.1 lakh MPN/100 ml. DO was NIL, consistent with the broader pattern of oxygen deprivation.
Okhla Barrage – BOD 44 mg/l; DO NIL
April 7, 2026
At Okhla Barrage, BOD reduced marginally from 46 mg/l to 44 mg/l; DO remained NIL.
Hindon Cut – DO NIL; BOD 84 mg/l
April 7, 2026
Downstream, Hindon Cut remained among the most polluted stretches, recording NIL dissolved oxygen and a BOD of 84 mg/l.
Nizamuddin Bridge stretch – BOD 34 mg/l; DO NIL
April 7, 2026
At Nizamuddin Bridge, BOD reduced slightly from 38 mg/l to 34 mg/l, but DO remained absent, with pollution levels remaining extremely high.
ITO Bridge stretch – BOD 40 mg/l; DO NIL; Sewage contamination in lakhs
April 7, 2026
At the ITO Bridge, BOD remained critically high at 40 mg/l and DO was NIL. Sewage contamination levels continued to remain in lakhs MPN/100 ml.
ISBT Bridge stretch – BOD 48 mg/l; DO NIL; Faecal contamination high
April 7, 2026
At the ISBT Bridge stretch, BOD surged from 33 mg/l in 2025 to 48 mg/l in 2026. DO levels were NIL in both years, and faecal contamination remained extremely high.
Wazirabad stretch – BOD 5 mg/l; DO 4.6 mg/l; Faecal coliform 9,200 MPN/100 ml
April 7, 2026
Downstream at Wazirabad, BOD improved from 6 mg/l in 2025 to 5 mg/l in 2026. DO rose to 4.6 mg/l but remained below safe standards. Faecal coliform levels increased from around 5,400 MPN/100 ml (2025) to nearly 9,200 MPN/100 ml (2026).
Palla stretch (entry point into Delhi) – DO 5.2 mg/l; BOD 3 mg/l
April 7, 2026
At Palla, the entry point of the river into Delhi, water quality remained comparatively better. DO was 5.2 mg/l (above the minimum standard of 5 mg/l). BOD was 3 mg/l, down from 4 mg/l in April 2025, indicating lower organic pollution.
April 7, 2026: DPCC releases Water Quality Status report on Yamuna in Delhi (sampling date)
April 7, 2026
The Delhi Pollution Control Committee (DPCC) released the Water Quality Status of River Yamuna report, based on samples collected on April 7, 2026. The report shows pollution remains far above permissible limits in most downstream Delhi stretches despite above-normal rainfall in March and April. A few stretches show marginal improvement compared with April 2025, but overall condition is still severely polluted; the most alarming finding is widespread absence of dissolved oxygen in several stretches.
Rainfall in March–April 2026 did not significantly improve Yamuna water quality
April 2026
The report notes that higher rainfall and increased river flow in March and April 2026 did not significantly improve water quality. Environmental experts cited inadequate sewage treatment capacity and poor drainage management as major reasons for the ongoing crisis, and called for expansion of sewage treatment infrastructure, better treatment of drains, stricter monitoring of industrial discharge, and long-term river restoration measures.