Martinez Water System The City owns and operates its own treatment plant that supplies water to most of the City of Martinez. Billing is done Bi-monthly with bills generated on the 12th, 19th and 26th of each month. Commercial customers with large meters are billed monthly. Click here for your Water Account Inquiry To establish an account in your name, please complete and return the water service application. Click here for a Water Service Application. Inquires regarding your account, or to report a water leak, please call customer service at 925-372-3575 or email water@cityofmartinez.org Payments may be mailed to Martinez Water System, P. O. Box 750, Martinez, Ca 94553. You may also pay in person at 525 Henrietta Street at the cashier's office or our night drop box in the courtyard of City Hall. Checks, Cash, Visa or M/C are accepted. Low income households may also qualify for Lifeline Rates on their water services. Click below for qualification information and application. Lifeline Information and Application Click here for water quality and conservation information. WATER CHARGES ZONE PUMPING RATES $2.82/hcf for zone I (service elevation 0-150 ft. above m.s.l.) $2.99/hcf for zone II ( " " 150-300 ft. above m.s.l.) $3.11/hcf for zone III ( " " 300-450 ft. above m.s.l.) $3.30/hcf for zone IV ( " " 450-600 ft. above m.s.l.) hcf = one hundred cubic feet m.s.l. = mean sea level SERVICE CHARGES METER SIZE CHARGE PER BILLING Lifeline 5/8 inch $16.02 5/8" $40.06 1" (with Fire service requirement) $51.00 1" $89.44 1 ½" $171.74 2" $270.52 3" $533.90 4" $830.22 6" $1653.32 8" $2970.26 10" $4781.06