Thanks for the comments. I'm not trying to solve a problem but hoping to improve my understanding of how clean water impacts the cost of water treatment. Our city is very slowly separating combined sewers and wondered what the city might save (ballpark) in treatment cost if more effort was made...
In Canada for about 50 years wastewater systems have separated sewage and rainwater. More recently many cities are trying to keep more of the rain from running off and contaminating rivers and lakes with still not very clean water.
I was hoping there might be rough rule of thumb that say a 10%...
I'm curious about what factors affect the cost of treating wastewater. I live in a Canadian city of about 650,000 people. Based on numbers that are easily available I figure something in the order of 50% of the wastewater the city treats is rainwater likely mostly from combined sewers and...
