Municipal water facilities usually treat water with chlorine before it is distributed to your homes to kill disease-causing bacteria, viruses, and parasites. Depending on the quality of water sourced in a particular area, more chlorine may be necessary than other areas. However, there are occasional cases of over-chlorinating As a result, water from your tap smells like drinking pool water.
Rotten egg-smelling water is usually the result of hydrogen sulfide gas which can occur naturally in groundwater or certain bacteria present in groundwater, well or municipal water sources. Water heaters which come with a magnesium rod to prevent corrosion produce hydrogen sulfide gas once in contact with water’s natural sulfates and gives off a strong, nasty smell.
Water that stinks like sewage is a sign that bacteria buildup is present in your heater or water source. If you source your water from a well, natural groundwater chemistry and a possible defective septic or nearby landfill may leach nasty bacteria or odor-causing pathogens into your water source.
Although metallic taste is typically present in well water, the most common culprit for metallic tasting tap water is rusty or corroding pipes and plumbing fixtures that discharge high concentrations of trace metals like iron, zinc, manganese, copper, and lead. Low pH or soft water, which is more acidic tend to leach metals from copper or iron pipes into the water, also causes metallic-smelling water.
Fishy-smelling drinking water can be caused by silts in your tap. However, if fishy smell is only present in certain taps in your home, it may be caused by grimy aerator which breed of disease-causing microbes.
Gasoline or Petroleum
Gasoline-smelling water is a serious concern that needs immediate attention. More than the unwanted taste and smell that it gives off, it may be an indication of a leaking fuel pipes or underground fuel storage stank near your well. Ingesting fuel-contaminated water, may cause adverse health effects including anemia, increased risk or cancer, liver, and kidney problems.