For the love of clear water, check out those links:
List of Carcinogens in Our Water
What is a Mutagen?
A Mutagen is a chemical or substance that can alter the structure and/or properties of DNA. Even radiation can be mutagenic.
What's in the water?
From cleaning products and toxic runoff from water treatment plants to clorine and human fecal matter, many things that end up in our water supply carry mutagenic properties.
Are Mutagens and Carcingoens synonymous?
Both terms are not technically synonymous, but the ability of a substance to induce mutations and its ability to induce cancer are correlated. Mutagens are a result of genetic change and carcinognes are a result of mutagenic events.
What is a carcinogen?
A carcinogen is a sub-category of mutagens. In short, it is a substance that is capable of causing cancer in humans and animals.
Carcinogens in our water?
in the 1970s, sampling for water contaminants increased and hundreds of chemicals were identified in various drinking water supplies.
The sources of these contaminants are varied and they include the following: improper disposal of household products and cleaning solvents, leaking land-fills and underground storage tanks, discharge from commercial businesses and industries, and increased pesticide use during the past 50 years.
Where is the EPA in all this?
According to Cornell University's Program on Breast Cancer and Environmental Risk Factors "the EPA regulates more than 40 different contaminants that are known or suspected to cause cancer. These contaminants are called carcinogens, and it is assumed that no concentration in drinking water is safe. However, the EPA must decide what level of risk is acceptable for regulation."
For more information you can visit Cornell's Page on the subject.