Household products that are hazardous materials may be recycled. Check with local gas stations and automotive centers about recycling used motor oils and batteries and with paint stores for leftover paints and solvents. A. Ground water may become contaminated when rainfall and surface runoff pass through contaminated soil. Water dissolves many substances and can carry particles and microorganisms with it into the ground water. Landfills , mining, improperly applied pesticides, improperly stored chemicals and de-icing salts, leaking underground storage tanks , improperly installed or failing septic tanks , and other surface activities can significantly alter ground water quality.
Contamination often goes undetected for many years.
You should contact your county health department, state agency with ground water responsibility, and state health department. These agencies can investigate the cause of the change in your well water. You should contact the agencies listed above. Depending on the circumstances, they may be able to help you. In some situations, yes.