
Too little lead to measure
10 public water companies list Maricopa as a place they supply. The biggest is Gw Santa Cruz Water County, with about 84,000 people. The highest latest result among Maricopa's water companies is 3.5 parts per billion, at Gw Santa Cruz Water -Twin Hawks Water. None of the 10 with results was above 15 at its latest test. 9 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.