21. Second tests shown that the school's drinking water did not contain coliform . 22. The source of the coliform contamination is debated. 23. Fecal coliform levels at the mouth periodically violate State of California water quality standards. 24. Violations involved arsenic, radioactive substances like uranium, tetrachloroethylene, and coliform bacteria. 25. The EPA refused, worried about the presence of coliform bacteria in the injected water. 26. Surface water has an excessive load of faecal coliform bacteria and is costly to treat. 27. Health officials also found high levels of fecal coliform bacteria off Hollywood and Hallandale Beach. 28. The coliform index is used because it is difficult to test for pathogenic bacteria directly. 29. Newer methods for coliform detection are based on specific enzyme substrates as indicators of coliforms. 30. Rivers Yamuna, Vardha are amongst the other most coliform polluted water bodies in India.
