When San Diego city water customers receive a water bill, and they feel the bill is charging them for more water than they used, their options for challenging the bill are limited. One of those options is to have their water meter tested. NBC 7 Responds wanted to know if the city’s water meter testing is treating San Diego customers fairly. After sharing the test results and the city’s water meter testing process with one of the country’s meter testing experts, he said he could not say the tests performed by San Diego’s Public Utilities Department were done accurately.