Effective January 14, 2012, the Rates for Recycled Water use will be as follows:
Recycled Water Monthly Fixed Charge
|
5/8" |
$ 8.87 |
|
1" |
$ 16.15 |
|
1.5" |
$ 30.87 |
|
2" |
$ 51.88 |
|
3" |
$121.35 |
|
4" |
$206.45 |
Recycled Water Rates for Commercial/Idustrial Use
| Use Charge ($ per Thousand Gallons) |
$4.76* |
*Plus or minus the automatic adjustment that passes through any adopted increases or decreases in the wholesale charges for water established by the Sonoma County Water Agency.
Recycled Water Rates for Landscape Irrigation Use
| Tier 1 - Up to 125% of billing period water budget |
$4.55* |
| Tier 2 - From 126 - 200% of billing period water budget |
$6.53* |
| Tier 3 - Over 200% of billing period water budget |
$9.81* |
*Plus or minus the automatic adjustment that passes through any adopted increases or decreases in the wholesale charges for water established by the Sonoma County Water Agency.
The billing period water budget is the amount of water needed to irrigate the specific area of landscape served by the dedicated irrigation account for the specific days covered by the billing period. The billing period water budget is determined monthly in arrears for each account in accordance with the following formula:
Billing Period Water Budget = {.7 x [ETo - EP] x [LAh + LAm] x CF} / 1000
ETo (Reference Evapotranspiration) = Evapotranspiration is defined as the amount of water used by the plants (transpiration) and evaporated from the soil (evaporation). It is measured in inches by the Santa Rosa California Irrigation Management Information Systems (CIMIS) weather stations. Reference Evaportranspiration is a standard measurement of evapotranspiration for cool-season turf. The Billing Period ETo is the sum of the daily ETo for the specific days of the billing cycle.
EP (Effective Precipitation) = The depth of rainfall, measured in inches by the Santa Rosa CIMIS weather stations, that offsets ETo. It is assumed that only 1/3 of total rainfall offsets ETo. The Billing Period effective precipitation is for the specific days of the billing cycle.
LAh (landscape area high) = Square footage of site’s landscape area consisting of high water use plants or uses (turfgrass, ornamental water features, annuals, plants in containers and plants with a plant factor greater than 0.6)
LAm (landscape area moderate) = Square footage of site’s landscape area consisting of moderate and low water use plants (plants with a plant factor of 0.6 or less)
CF (Conversion factor) = 0.623, the number that converts square feet to gallons