
Too little lead to measure
12 public water companies list Sierra Vista as a place they supply. The biggest is Bella Vista City Water, with about 20,045 people. The highest latest result among Sierra Vista's water companies is 6.9 parts per billion, at East Slope Water - West. None of the 12 with results was above 15 at its latest test. 10 found too little lead to measure. 4 are small systems serving fewer than 500 people each, such as a mobile home park, a subdivision or a business with its own well.