Reviews
Part of Smart irrigation planning: measure demand, hydrozone, then set run times
Four home tests to check how well your smart irrigation is working
Run four checks at home using your meter, sprinkler cans, storm response, and water bill to see how well a smart irrigation controller works.
A controller that reports savings is reporting a calculation, not a measurement. The evidence that matters comes from your meter, your soil, and your bill. None of it needs special equipment. Here is a test plan that produces numbers you can defend, plus the traps that distort results.
What to take away
- The water meter is the referee. Everything else is an estimate.
- Rule out leaks before crediting or blaming the controller, since a leak swamps every other effect.
- Compare like with likesame months, same weather pattern, and a note of anything else that changed.
- Two weeks of observation beats one season of dashboard screenshots.
Test one: the meter, with everything off
Turn off every water-using fixture, read the meter, wait two hours, and read it again. EPA's leak detection guidance describes this check and the problem's scale.
Leak waste by the numbers
- 9,300 galwasted yearly by average household
- 9%of homes waste 50+ gallons daily
- 10%saved on water bill by fixing easy leaks
- 12,000 galwinter use signaling serious leak
The average household's leaks waste over 9,300 gallons a year, nine percent of homes waste 50 gallons or more daily, and fixing easy leaks saves about 10 percent on a water bill.
It also notes that a family of four using more than 12,000 gallons in a winter month probably has a serious leak. Run the test before and after any irrigation change, because an undetected leak will make good automation look useless.
Test two: output and uniformity
Set five or six straight-sided cans across a zone. Run the water for fifteen minutes, then measure each can. You need two numbers: average depth, the zone's application rate, and the spread between highest and lowest, which shows coverage evenness.
A zone that delivers half an inch on one side and a tenth on the other cannot be fixed by any schedule. That is a nozzle, pressure, or spacing problem.
Test three: does it respond to the world
- After a real storm, check whether the next cycle was skipped or shortened. Keep a cheap rain gauge to know what actually fell on your property.
- In a hot week, check whether run times went up rather than staying flat.
- In autumn, check whether the schedule came down without you touching it.
EPA's summer water use summary is the benchmark: household outdoor use is roughly 30 to 70 percent of the total depending on region. Summer lawn watering can be two to four times the rest of the year.
It cites an estimate that half of outdoor water is lost to evaporation, wind, and runoff from overwatering. Homes with automatic sprinklers can use about 50 percent more water outdoors than homes without them.
It also mentions the simplest test of all: step on the grass, and if it springs back it does not need water.
Test four: the bill, read carefully
What it shows
- This July against last July
- Seasonal outdoor use
- Summer against winter, same year
- Your outdoor share
- Gallons, not dollars
- Actual consumption
What can distort it
- This July against last July
- Rainfall differences, guests, a new lawn
- Summer against winter, same year
- A winter leak inflating the baseline
- Gallons, not dollars
- Rate changes and fixed charges
Always compare gallons. Rates move, and a bill that fell because a tier changed proves nothing about the irrigation.
Writing it down
Keep one page: dates, meter readings, can-test depths, weather notes, and what you changed. Six months later that page is the only thing that will tell you whether the system earned its keep. If the tests reveal hardware faults rather than scheduling faults, go back to the planning sequence, and use our guide to reading published specifications before replacing anything.
