how much salt in water { ppm } can be safe for human consumption?

Answer 1

Salt water in not good for humans, did you know a teaspoon of ocean water contains every element!

Answer 2

Since ppm means parts per million and a grain of salt is one million parts per million I guess that is the answer unless you are talking about an extended period of time. Over an extended time, prbably about 1500 ppm would likely not be very good for you.

Answer 3

Athletes have higher fluid and sodium requirements than sedentary individuals. For the general population, the recommendation is to limit sodium intake to 2.3 grams per day, which is equivalent to 5.8 grams of salt. The rationale for this guideline, is that excessive sodium intake causes high blood pressure in individuals who are 'salt sensitive'. Because most people only require 1.5 grams of sodium per day, it makes sense from a public health perspective to recommend reduced intakes. Athletes, however, need significantly more sodium than their inactive counterparts; the exact amount varies greatly between individuals, depending on sweat volume and sweat sodium concentration.

Some athletes may require more than 10 grams of sodium per day to make up for the amount lost in sweat. Athletes also require more fluid than sedentary individuals - up to 10 litres per day. Both dehydration and sodium depletion adversely affect athletic performance. However, it is difficult to differentiate between the two because they occur simultaneously and have similar negative consequences.

Using the above data, we can postulate that an "average" individual will consume 5.8 g of salt, along with their normal fluid intake of 2 litres. This concentration would be approximately equate to 894 ppm.

For the athlete, 10 g sodium = 25.2 g salt. Coupled with 10 litres of fluid, we get a concentration of approximately 776 ppm.

Surprise, surprise! The concentration is higher in the "average" case than in the athlete's case!

Answer 4

Give neither salt nor advice until you are asked for it.