Biology, 18.12.2019 03:31, apgg303

It is important for us to keep our water supply clean and chemically balanced, so that it is potable and we can drink it. having the right ph level is a part of this. what ph level should drinking water have

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The pH level of drinking water must fall within the range, 6.5-8.5 because is neither acidic nor alkaline enough to be dangerous in the human body.

Explanation:

The pH level is an indicator of acid-base equilibrium, and shows whether a substance is acidic or alkaline. The pH scale ranges from 0-14, where a pH value of 7 means the substance is neutral. The levels less than 7 is considered as acidic and the levels greater than 7 is considered as alkaline.

The pure water has a pH value of 7. The normal pH range of surface water systems is 6.5 to 8.5, and that of groundwater systems is 6 to 8.5. According to EPA (Environmental Protection Agency) standards, the pH value of drinking water must fall within the range, 6.5-8.5 .This water is safe to drink as it is neither acidic nor alkaline enough to be dangerous in the human body.

Water having a pH value less than 6.5 is considered as soft and acidic, and it can be corrosive and filled with toxic metals while water with a pH value higher than 8.5 is hard and alkaline, and poses less of a health risk than acidic water but can taste bad and leave scale deposits on dishes, sinks etc.

answered: Guest

1. true.2. true.3. true.4. false.5. true.the concept of darwin's theory of evolution involves the idea that there are limited resources in a given living environment and that the organisms which live within have variations in their genetic make up due to random mating. the ones with beneficial genetic variations can express certain traits which give them an upper hand in surviving and reproducing in the said environment compared to ones who may have a more disadvantageous variation in traits. over time, the organisms with an upper hand will survive and reproduce more frequently and pass on their beneficial genes while the others die. the result is evolution, where we observe (usually, but not always) eventually, phenotypic distinct changes.

answered: Guest

oxygen +1 most likely

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