87.26.1. General condition applicable to effluent discharge: No effluent discharge may take place in the inner protection zone delimited for a category 1 or category 2 surface water withdrawal in accordance with section 70 of the Water Withdrawal and Protection Regulation (chapter Q-2, r. 35.2), unless the discharge is done in a watercourse whose width is greater than 30 m in low-water periods and an attestation by a professional within the meaning of the Professional Code (chapter C-26) indicates that the discharge will not affect the water withdrawal site.