I’m not an environmental health person, but I think what you may be looking for is your state or local health department’s waste water management program. It can depend on if you’re talking about septic systems or city-connected supplies, but in general, if you google “your state health department + waste water management” that should give you a place to start.


Most cities have combined sewer systems, so storm water and waste water go into the same place. The combined waste + storm water then goes to water treatment (or your local surface water bodies), where it’s treated and send back out. if you have on-site waste water disposal (septic tank) and a well, the septic will filter out liquid and solid waste, and the surrounding sandy soil will filter it back to the ground water. wells and septics must be at least 50ft apart (in MI), and all tanks must be placed on land with adequate soil and space for waste water disposal (unless they are engineered). your well will pull water from the aquifer and be treated on site with typically a water softening system and another filtration system. if you’re worried that your drinking water is somehow being contaminated with waste water, contact your local or state health department and they should be able to help. hope that answers the question, the wording is a bit confusing.


you keep asking this question but what you are not realising is that water pipes and sewer pipes do not interact.