Administrative brief: Durga visarjan 2026, Bhopal ghats

Short brief for forwarding. All figures are historical (2023–2025), computed by the backend from the supplied data; no 2026 measurements.

1. Scope

MPPCB Ganesh and Durga visarjan reports 2023–2025, 7 Bhopal ghats, readings before, during and one week after immersion. Compared with CPCB Class B (outdoor bathing): DO 5 mg/l or more, BOD 3 mg/l or less, pH 6.5–8.5. Total coliform is not in the data.

2. Historical findings

• Dissolved oxygen below 5 mg/l (Class B): 42 of 116 (numeric DO readings, all 7 ghats)
• Dissolved oxygen below 4 mg/l (Class D line): 17 of 116 (numeric DO readings)
• Dissolved oxygen read 0 mg/l: 4 (readings, all at Bairagarh (Sant Hirdaram) kund)
• BOD above 3 mg/l (Class B): 100 of 112 (numeric BOD readings, all 7 ghats)
• pH outside 6.5–8.5 (Class B): 6 of 115 (numeric pH readings)
• Durga readings only: DO below 5 / BOD above 3: 25 of 57 (DO readings below 5; BOD was above 3 in 50 of 53 Durga readings)
• Ghats flagged high risk: 5 of 7 (high risk = any DO below 4, or DO below 5 in more than half of readings)
• BOD already above 3 before immersion: 32 of 37 (pre-immersion readings. BOD was already above the limit in most readings taken before immersion, so these readings cannot show what immersion itself changed.)

3. Priority ghats

4. Proposed actions before and after 20 Oct

Recommendations for verification, by task group. Each ghat's list is on its work order.

• 11–15 Oct · Site identity check: Field visit to confirm which physical location the report's site name refers to.Rani Kamlapati ghat / Kamla Park kund (Recommendation — verify with MPPCB / CPCB guidelines.)
• 13–18 Oct · Water sampling: Priority pre-immersion sampling before 20 Oct: DO, BOD, pH and total coliform (past readings are missing).Bairagarh (Sant Hirdaram) kund, Malikhedi kund, Khatlapura ghat, Prempura ghat (Recommendation — verify with MPPCB / CPCB guidelines.)
• 15–20 Oct · Barricading & nets: Contain floating material with barricades, nets or booms; consider a liner or temporary pond where applicable.All ghats (Recommendation — verify with MPPCB / CPCB guidelines.)
• 15–20 Oct · Water sampling: Test pH before immersion and report the reading to the relevant MPPCB laboratory.Khatlapura ghat, Prempura ghat, Hathaikheda dam / kund (Recommendation — verify with MPPCB / CPCB guidelines.)
• 17–27 Oct · Aeration: Start aerators at the immersion zone before immersion and check dissolved oxygen (DO) daily with a portable meter. If DO stays below 4 mg/l before 20 Oct, refer to the officer to review an alternative immersion kund.Bairagarh (Sant Hirdaram) kund, Malikhedi kund, Rani Kamlapati ghat / Kamla Park kund, Shahpura lake ghat, Prempura ghat (Recommendation — verify with MPPCB / CPCB guidelines.)
• 18–22 Oct · Cleaning & debris: Collect flowers and organic offerings separately before immersion; remove idol remnants and debris after immersion; inspect for drains entering the water body.All ghats (Recommendation — verify with MPPCB / CPCB guidelines.)
• 20–27 Oct · Aeration: Keep aeration running during and after immersion (DO was often below the bathing standard). Check DO 1, 3 and 7 days after immersion.Bairagarh (Sant Hirdaram) kund, Malikhedi kund (Recommendation — verify with MPPCB / CPCB guidelines.)
• 27 Oct · Water sampling: Collect DO, BOD, pH and total coliform samples one week after immersion.All ghats (Recommendation — verify with MPPCB / CPCB guidelines.)

5. Target for the 27 Oct sample

• ☐ Dissolved oxygen: 5 mg/l or more
• ☐ BOD: 3 mg/l or less
• ☐ pH: 6.5 to 8.5
• ☐ Total coliform: 500 MPN/100 ml or less (Not in current data; needs a new test)

BOD was already above 3 mg/l in 32 of 37 pre-immersion readings (2023–2025), so full Class B by 27 Oct is unlikely at most ghats. The interim target does not replace Class B.

6. Resources

Not estimated: no sourced rates are available.

7. Data gaps and limitations

• 114 expected cells have no table in the reports: no Durga 2025 table for Bairagarh (Sant Hirdaram) kund; no Durga 2025 table for Malikhedi kund; no suspended solids rows in Durga 2023 (7 ghats); no suspended solids rows in Durga 2025 (5 ghats). These cells are missing, not passing.
• No total coliform data, so no ghat can be shown as meeting Class B in full.
• No 2026 readings: everything is historical (2023–2025).
• Readings show levels, not causes. Pre-immersion BOD was already above 3 in 32 of 37 readings, so the data cannot show what immersion itself changed.
• No health effects are claimed. Readings are reported against CPCB limits only.
• Units are assumed; the reports print none.
• Exact sampling dates are not in the dataset; only year, festival and phase.
• Report page references come from the CSV. Only a partial manual spot check against the PDFs has been done; other page references are not yet checked.
• Only 4 metals were tested (chromium, lead, zinc, copper); they have no Class B limit and are reported, not judged.
• Recommended actions are unverified against CPCB idol-immersion guidelines. Hindi text is a provisional translation.

Assembled in the web UI from the Visarjan Ghat Watch backend export (2023–2025 data; analysis date 11 Oct 2026). Screening tool, not an official assessment.