I am modelling a textile process which has input of raw materials, chemicals, energy and water, after the process the water goes to wastewater treatment plant with unfixed chemicals. I will include wastewater treatment process in the mentioned textile process card. I assumed all of the water I included in the process card goes to wastewater treatment process. My question is if I included water, for example 100 L tap water and use the ecoinvent dataset of tap water, then how can I link this tap water amount with the wastewater treatment process. I will use ecoinvent dataset for wastewater treatment process. If I do not make link then, I think it will be double counting. Please advise me how can I avoid this double counting.