Hayward Municipal Code Ch. 3 Wastewater Volume Determination

3.01 Metered Water Supply. User charges and fees shall be determined based on the total amount of water used from all sources unless, in the opinion of the City, significant portions of water received are not discharged to a City sewer. The total amount of water used from public and private sources will be determined by means of public meters or by private meters, installed and maintained at the expense of the user and approved by the City.

3.02 Metered Wastewater Volume and Metered Diversions. For users where, in the opinion of the City, a significant portion of the water received from any metered source does not flow into a City sewer because of the principal activity of the user or removal by other means, the user charges and fees will be determined based on the volume of water discharged from such premises into a City sewer. Written notification and proof of the diversion of water shall be provided by the user if the user is to avoid the determination of user charges and fees based on the total amount of water used from all sources. The user may install a meter of a type and at a location approved by the City and at the user's expense. Such meters may measure either the amount of sewage discharged or the amount of water diverted. Such meters shall be tested for accuracy at the expense of the user when deemed necessary by the Manager.

3.03 Estimated Wastewater Volume.

(a) Users without Source Meters. For users where, in the opinion of the City, it is unnecessary or impractical to install meters, the quantity of wastewater discharged may be based upon an estimate prepared by the City. This estimate shall be based upon a rational determination of the wastewater discharged and may consider such factors as the number of fixtures, seating capacity, population equivalent, annual production of goods and services, or such other determinants of water use necessary to estimate the wastewater volume discharged.

(b) Users with Source Meters. For users who, in the opinion of the City, divert a significant portion of their flow from a City sewer, the user charges may be based upon an estimate of the volume to be discharged, provided the user obtains a Wastewater Discharge Permit or other approval by the City and pays the applicable user charges and fees. The estimate shall include the method and calculations used to determine the wastewater volume and may consider such factors as the number of fixtures, seating capacity, population equivalents, annual production of goods and services, or such other determinants of water use necessary to estimate the wastewater volume discharged.