Water contamination comes from city sewage, industrial waste, pesticides, bacteria and radioactivity, heavy metals, such as lead and mercury, from old, corroded pipes. Hundreds of different contaminants have been identified in public drinking water, but only when they reach dangerous levels do authorities step in.
Groundwater contamination occurs when man-made products such
as gasoline, oil, road salts and chemicals get into the groundwater and cause
it to become unsafe and unfit for human use.
Some of the major sources of these products, called contaminants, are storage tanks, septic systems, hazardous waste sites, landfills, and the widespread use of road salts and chemicals.
COMMON WATER QUALITY ISSUES
Aesthetic Quality of Water
- Turbidity – Caused by a wide variety of suspended materials-colloidal to coarse dispersion, mud, clay, sediment and suspended solid;
- Color – appearance of yellowish or brownish color in water supply is due to suspended solids, high turbidity or rust from rusty pipes;
- Taste & Odor – unpleasant smell may be due to chlorine, sulfur or organic pollutants;
Health Related Concerns
- Chlorine. Chlorine is one of the most widely used disinfectants. However, chlorine has dangerous disinfection byproducts – chloroform, trihalomethanes (THM), which is carcinogenic.
- Organic and inorganic compounds, chemicals and heavy metals