Look for testing that is independent, certified, omits nothing and is clearly reported. Test results that don’t include specific protocols should be dismissed. Why? Labs will test anything. Send them a bottle of “pure” water, test it against 172 contaminants and the results would look great - and they will also be completely deceiving. One less than credible test result offered by an unscrupulous competitor has no protocol, left out the most harmful - and tough to remove - contaminants like arsenic, chromium VI etc., tested contaminant levels in parts per billion versus parts per million (1000x easier for the filter to perform) and includes almost 100 compounds that are easy to remove. Why? To make their test results look good. AlkaViva test results are independent, certified, thorough and are clearly reported. Unmatched test results you can count on every time you take a sip...