Your outdoor monthly water allocation is based on drought tolerant landscape irrigated with a water efficient system such as drip. It is no longer based on warm season turf.
If you have a lawn and maintain your current watering schedule, you will likely be over your allocation and your water bill will go up.
The schedules below are a suggested weekly watering schedule for drip irrigation for drought-tolerant plants.
Start with this schedule and adjust the times only if your plants show signs of stress.
You can download the schedule here for future use.
Rainbird XFD |
Emmiter Spacing 18''
|
Emmiter Spacing 12''
|
Month |
Drought Tolerant Plants
|
Drought Tolerant Plants
|
|
January |
1 day, 1 cycle of 50 minutes |
1 day, 1 cycle of 22 minutes |
|
February |
1 day, 1 cycle of 56 minutes |
1 day, 1 cycle of 25 minutes |
|
March |
2 days, 1 cycle of 39 minutes |
2 days, 1 cycle of 17 minutes |
|
April |
2 days, 1 cycle of 47 minutes |
2 days, 1 cycle of 21 minutes |
|
May |
2 days, 1 cycle of 56 minutes |
2 days, 1 cycle of 25 minutes |
|
June |
3 days, 1 cycle of 37 minutes |
3 days, 1 cycle of 16 minutes |
|
July |
3 days, 1 cycle of 38 minutes |
3 days, 1 cycle of 17 minutes |
|
August |
3 days, 1 cycle of 39 minutes |
3 days, 1 cycle of 17 minutes |
|
September** |
2 days, 1 cycle of 48 minutes |
2 days, 1 cycle of 22 minutes |
|
October** |
2 days, 1 cycle of 27 minutes |
2 days, 1 cycle of 16 minutes |
|
November** |
1 day, 1 cycles of 54 minutes |
1 day, 1 cycle of 24 minutes |
|
December |
1 day, 1 cycle of 44 minutes |
1 day, 1 cycle of 20 minutes |
NETAFIM Techline CV |
Emmiter Spacing 18''
|
Emmiter Spacing 12''
|
Month |
Drought Tolerant Plants
|
Drought Tolerant Plants
|
|
January |
1 day, 1 cycle of 72 minutes |
1 day, 1 cycle of 33 minutes |
|
February |
1 day, 1 cycle of 80 minutes |
1 day, 1 cycle of 37 minutes |
|
March |
2 days, 1 cycle of 56 minutes |
2 days, 1 cycle of 26 minutes |
|
April |
2 days, 1 cycle of 67 minutes |
2 days, 1 cycle of 31 minutes |
|
May |
2 days, 1 cycle of 81 minutes |
2 days, 1 cycle of 37 minutes |
|
June |
3 days, 1 cycle of 53 minutes |
3 days, 1 cycle of 24 minutes |
|
July |
3 days, 1 cycle of 55 minutes |
3 days, 1 cycle of 25 minutes |
|
August |
3 days, 1 cycle of 56 minutes |
3 days, 1 cycle of 26 minutes |
|
September** |
2 days, 1 cycle of 69 minutes |
2 days, 1 cycle of 32 minutes |
|
October** |
2 days, 1 cycle of 52 minutes |
2 days, 1 cycle of 24 minutes |
|
November** |
1 day, 1 cycles of 78 minutes |
1 day, 1 cycle of 36 minutes |
|
December |
1 day, 1 cycle of 63 minutes |
1 day, 1 cycle of 29 minutes |
This is a suggested weekly schedule for spray-head irrigation for drought-tolerant plants, not turf. Customer water rates are now calculated based on drought-tolerant plants and not turf.
It assumes heavy clay soils common to most of IRWD's service area. Generally, these are the MAXIMUM times you will need for full sun areas. Start with this schedule and adjust the times only if your plants show signs of stress. If stress occurs only in isolated areas, check the operation of your irrigation system before adjusting the times.
Month |
Drought Tolerant Plants |
|
January |
1 day, 2 cycles of 3 minutes |
|
February |
1 day, 2 cycles of 3 minutes |
|
March |
2 days, 2 cycles of 3 minutes |
|
April |
2 days, 2 cycles of 4 minutes |
|
May |
2 days, 3 cycles of 3 minutes |
|
June |
3 days, 2 cycles of 3 minutes |
|
July |
2 days, 3 cycles of 4 minutes |
|
August |
2 days, 3 cycles of 4 minutes |
|
September** |
2 days, 2 cycles of 4 minutes |
|
October** |
2 days, 2 cycles of 3 minutes |
|
November** |
1 day, 2 cycles of 4 minutes |
|
December |
1 day, 2 cycles of 3 minutes |
*By "cycling" the irrigation controller to turn on for the recommended number of minutes an hour apart, deeper watering and healthier root growth are gained, while runoff is reduced.
** In September, plants' water needs drop by approximately 30 percent even if the temperature is hotter, because the days are shorter, so evaporation decreases. Also plants begin to go into a dormant phase where they need less water. In some years, humidity is also higher, increasing your level of discomfort, but decreasing plants' water needs as it slows the rate of evaporation. This rapid drop in water needs will continue in October and November.
