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Water Efficient Products
Rotary Nozzles: Both Rain Bird and Hunter have a line of rotary
nozzles that will easily retro-fit onto many existing pop up spray heads. As
the name implies, these nozzles slowly rotate multiple streams to water
lawn, shrubs or flowers.

A traditional 15' Full pattern spray nozzle puts out 3.7 gallons per minute.
When spaced with similar spray nozzles, the average spray sprinkler
system creates a precipitation rate of 1.7 inches per hour. The average water
infiltration rate on most lawns is between .4 to .6 inches per hour. The high
water application of traditional spray nozzles leads to excessive run off with
run times over 15 minutes.

By comparison, a similar rotary nozzle 15' full pattern has a flow between
.87 to 1.85 gallons per minute. When equally spaced, a rotary nozzle
system will sprinkle between .45 to .61 inches per hour. This drastically
reduced precipitation rate reduces run off and allows the sprinklers to run
longer and more often to meet the watering needs of the plants within the
reduced watering schedule. Rotary nozzles cost from $4.25 to $6.00 and
require no special tools to thread onto existing spray bodies.

In-Line Drip Emitter Tubing: Shrub areas currently watered with
traditional spray nozzles can be easily converted to drip using drip tubing
that already as the drip emitters installed in the tubing. The home owner
replaces one of the existing spray heads with a one piece filter and regulator
(1800Retro $17.30) and then using a few transition fittings connects the
In-Line Drip Tubing through out the shrub bed. The other spray head are shut
off and with very little work the shrub bed is converted to drip irrigation with
out digging or changing valves. A 100' roll of In-Line Drip Tubing, emitters
spaced every 12" with a flow of .9 gallons per hour, is approximately $39.00.

Soil Moisture Sensor: This sensor reads total percentage of water
in the soil. At a preset moisture level, the module interupts the irrigation
controller from watering. The preset level can be changed to accomodate
different soils. Two stations on the irrigation controller can be excluded from
being interupted by the sensor. The system uses the existing valve wiring to
communicated from sensor to module, reducing installation work. Works on
any controller, $110.00

Rain Sensors prevent the irrigation controller from initiating watering if
it is raining. Rain sensors are the easiest and most cost effective product to
immediately save water. They easily wire into any existing irrigation
controller. The actual sensor is easily mounted to a fence or rain gutter. In
terms of saving water, they are most effective in the fall and spring when rain
occurs while some of us may still be watering our yards. Rain Bird wireless
version combines rain and freeze sensor, $69.00

Weather Stations: Hunter Industries has released a compact
weather station that adjusts the irrigation water times based on solar
radiation and temperature or interrupts the controller all together with a rain
sensor. The Solar Sync measures the amount of daylight and temperature
and adjusts the controller's water budgeting feature. The homeowner initially
programs the controller's watering times to meet the irrigation needs of their
turf for the hottest part of the year, usually July. The Solar Sync then adjusts
the watering time by a percentage. The Solar Sync may determine that a 30
minute run time can be reduced by 50% in May based on current conditions.
The adjustments are updated daily and the homeowner can always make
other adjustments to accommodate various conditions. Hunter's Solar Sync
is easy to install and can be purchased for approximately $78.00. The Solar
Sync will only work with existing Hunter Pro C or ICC controllers. A 6 station
indoor Pro C residential controller costs about $117.00

Here is a list of products and approximate cost that can be retro-fitted into existing sprinkler systems to conserve water
and meet the more stringent watering rules being imposed by local water districts. Many of these products also may
qualify for rebates from certain water districts.