The adjusted sewage volume is determined by multiplying the customer's calculated percentage discharge by the total purchased water for each billing period. Adjusted sewage volumes are subject to periodic review for changed conditions on the property. Customers seeking this type of adjustment must submit detailed data, sufficient to describe qualifying circumstances warranting an adjusted sewage volume. In the case of multiple dwellings with extensive landscaping, any eligibility for adjustment will normally be due to water used for irrigation. However, because of the relatively large number of residents compared to the irrigated area, few multiple dwellings will qualify.
Literature describing the calculation procedure for irrigation adjustments is available.
Literature describing the QSF in detail is available. Private Metering of Sewage Top Accurate measurement and metering of sewage is economical only for large industrial and commercial dischargers with continuous flow. Plans for any proposed installation must be approved and a permit obtained in advance. This literature should be carefully studied before proceeding. Segregate the water system plumbing which serves interior uses tributary to the sewer from that serving irrigation or other uses not tributary to the sewer.