What pH Do Bacteria Prefer

Most bacteria grow best around neutral pH values (6.5 – 7.0), but some thrive in very acid conditions and some can even tolerate a pH as low as 1.0. Such acid loving microbes are called acidophiles.

What pH do bacteria and fungi prefer?

In terms of pH 6.0 is good for most fungi. Bacteria are more favored by slightly alkaline condition 7.3 pH.

What pH level kills germs?

If used properly, free chlorine* can kill most germs within a few minutes. CDC recommends pH 7.2–7.8 and a free chlorine concentration of at least 1 ppm in pools and at least 3 ppm in hot tubs/spas.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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