This varies from country to country and possibly even states in US. However in general, drinking water must have NO coliform at all - that is called '0/100ml'
Swimming pool water is generally allowed '200/100ml'. Anything other than that is 'high' . In general terms coliform is in almost every pool of water and in almost every well. What we are most concerned about is E coli , which is fecal coliform and is dangerous to humans.
If you are in any doubt re E coli in drinking water, then take a sample in a sterilised bottle to your local lab. A lab test is usually about $25 in US/Canada and is well worth it to avoid dysentery and associated illnesses.
Any coliform presence in drinking water is cause for concern. Zero percent is the standard for drinking water.
It is 100 coliform cells for 100 ml water.
Coliform in well water is the presence of fecal matter in the well water. If the bacteria is found in drinking water, appropriate action needs to be taken.
Fertilizers, pH levels, dissolved oxygen, turbidity, and fecal coliform (for those of you who do not know what that is, it's bacteria found in poo.)
am also looking for the same
A coliform count is a microbiological assay of the number of coliform-type bacteria living in a certain sample. This is often used as a measure of fecal contamination of water supplies.
Coliforms are rod shaped gram negative bacteria that are often in well water. Not all coliform are harmful, but those of fecal origin are very harmful. The lab coliform count determines what type and how many coliform are in a water sample. This result is always marked "fit for human use" or "NOT fit for human use".
No.
A high coliform count indicates that the water is contaminated by feces.
sewage
total coliform bacteria
Roots and insects in the water are common sources of coliform.
If there is a company or airport next to it they throw the waste to the ocean