What comon bacteria can be found in common tap water?

There are laws governing the treatment of tap water. They require that the level of bacteria be very low. For the most part, the water is bacteria free. They are especially careful about fecal contamination. In some cities when there is a lot of rain the sewer system will dump into the local river/lake which is also the water supply. This means that the treatment plant has to be extra vigilant in making sure no pathogenic bacteria survive the treatment process. In well water (private wells do not go through a treatment facility) you often find P. vulgaris, which can make the water smell very badly.

What comon bacteria can be found in common tap water?
escherichia coli
Reply:In America most the water is treated with chlorine, there wont be any bacteria. Should not be bacteria in any treated water. In much of the world water is not treated. Then a host of bacteria will be found. That is why we Americans are warned never drink the water when we go overseas.
Reply:E. coli can be found in tap water. Our microbiology lab, just did an experiment on many different water samples. These included a river, tap water, ddH20, and even bottled smart water. We found bacteria even in triple distilled smart water!!! Another thought, Pseudomonas aeruginosa can be isolated from many sinks! Hope this helps!