
Under the legal limit of 15 ppb
2 public water companies list Arroyo Seco as a place they supply. The biggest is Arroyo Seco Mdwca, with about 444 people. The highest latest result among Arroyo Seco's water companies is 5 parts per billion, at El Salto Mdwca and Sa. None of the 2 with results was above 15 at its latest test. Small ones like El Salto Mdwca and Sa supply just their own grounds or street; most of Arroyo Seco gets its water from Arroyo Seco Mdwca. Your water bill names yours.
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