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Table 4 Environmental quality standards (EQS) for water parameters in Bangladesh

From: Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles

Parameters EQS limits
DO 5–6 mg/L
pH 6.5–8.5
NH3–N 0.5 mg/L
NO3–N 10 mg/L
PO4–P 6–10 mg /L
SO4 400 mg/L
  1. (Source: DOE 1991).