Things taken out with water treatment, plastic, antibacterial soap antidepressant,a drug used to treat parkinsons disease and other deadly chemicals in water.
The St. Croix is badly contaminated because of floods which affects the Twin Cities water supply.
SDWA founded in 1974 and its amendments establishes laws protecting the drinking water used by public water systems. Ensuring the safety of public drinking water.
The EPA made water standards:
Criteria to protect designated uses
Antidegradation Requirements to protect high quality waters
General Policies to address decide issues.
Wastewater is treated to remove pollutants. Wastewater treatment is a process to purify the water, removing contaminants, making it safe for people and fish to use it again.