There are many different types of contaminants in drinking water, including bacteria, viruses, protozoa, and parasites. Some are common in tap water, while others are more uncommon. Nitrates are produced when fertilizers are left over in the ground and runoff, and are harmful to humans and animals. Parasitic pathogens can also be found in drinking water, including the one found in groundwater. Water systems that use shallow aquifers often need to disinfect the water with chlorine. see this page  visit site

Manganese is a secondary contaminant today, although it can have negative effects at high levels. Overexposure to manganese can impair learning and memory and can affect motor skills. There has been evidence of excessive manganese contamination in the groundwater supply of some cities in the Northeast U.S., according to Iowa Public Radio. Manganese is also common in agricultural soils. The EPA estimates there are over 60,000 chemicals in the USA, with 91 contaminants regulated by the Safe Water Act.
Heavy metals like lead and mercury can make their way into drinking water through corroded pipes. Other sources of mercury in drinking water include landfill runoff, refineries, and agricultural waste. Even at low concentrations, mercury exposure can lead to serious problems for children. Heavy metals can cause high blood pressure and kidney damage over a long period of time. Even though it’s difficult to determine exactly how much mercury is present in drinking water, even low levels can affect your health.
Although drinking water quality is a public health concern, there are steps you can take to make your home safe from toxins in tap water. The Environmental Protection Agency has published guidelines for regulated and unregulated contaminants. Many of these are not considered harmful, but some can be harmful in your home. EPA is considering regulations for 104 chemicals, including pharmaceuticals, pesticides, and commercial chemicals. While EPA has taken some steps to make drinking water more safe, it still doesn’t eliminate every contaminant from drinking water.
Chlorine and chloramine are both common contaminants in public water systems. However, excessive amounts of these chemicals may cause eye, nose, and stomach irritation and make water taste like swimming pool. Chloramines also contain ammonia, which is another contaminant. However, EPA guidelines allow certain levels of these chemicals in water from city treatment centers. These contaminants are also dangerous for the environment. Therefore, it’s important to consider your water quality before you use it for drinking or cooking.
Lead is a highly toxic chemical that can be harmful at low doses. It leaches into water from plumbing pipes. It has adverse effects on human health and can lead to severe developmental issues in children. Lead affects the formation and function of blood cells. If you want to stay healthy, you need to make sure your water is free of lead. The EPA is working on regulations for lead levels in drinking water.