ET Analysis - 2011
The analysis compares irrigating under ET versus a conventional timer. It support
recommendations from the Irrigation Association and leading experts (horticulturists,
golf course superintendents, etc.) that watering under ET will save water and is one
of the best ways to maintain a healthy landscape.
* - ET Based Frequencies are supplied by ExactET Systems Inc. for a standard property irrigating turfgrass
** - Timer Based Frequencies represent average frequencies based on a typical weekly days-of-the-week setting for a normal irrigation season.
| City | Analysis Date | ET Based** Irrigation Frequency |
Timer Based* Irrigation Frequency |
Frequency Savings |
|---|---|---|---|---|
| Vancouver | Nov-11 | 16 | 54 | 70.4% |
| Kelowna | Nov-11 | 34 | 92 | 63.0% |
| Kamloops | Nov-11 | 50 | 88 | 43.2% |
| Calgary | Nov-11 | 28 | 66 | 57.6% |
| Edmonton | Nov-11 | 26 | 66 | 60.6% |
| Toronto | Nov-11 | 24 | 70 | 65.7% |
| Ottawa | Nov-11 | 16 | 66 | 75.8% |
| Montreal | Nov-11 | 10 | 66 | 84.8% |
* - ET Based Frequencies are supplied by ExactET Systems Inc. for a standard property irrigating turfgrass
** - Timer Based Frequencies represent average frequencies based on a typical weekly days-of-the-week setting for a normal irrigation season.
ET Analysis - Historical


Last year, Samuel Lemieux (Irrigation Lemieux) approached us with the idea of installing a weather based irrigation system….We proceeded with the installation and were extremely impressed with the results. By the end of the (2010) season, we only watered the grass 27 times instead of the usual 55 times….We are now looking at installing the system at other buildings.