The City of Fairfield reports annually to the community in it's Consumer Confidence Report (CCR) on the content of the drinking water produced at it's water treatment plant during the prior year. This is an extensive report on the level of chemicals found in the drinking water and whether or not the chemical amounts exceeded acceptable ranges set by the EPA.
Listed below are some of the daily averages of different analyses during 2011:
pH - 8.2 s.u.
Chlorine - 1.16 mg/l
Hardness - 132 mg/l or 7.7 grains per gallon (gpg)
Fluoride - 1.00 mg/l
Nitrate - 2.21 mg/l