Checked
Lawn watering days and outdoor water-use rules in Cambridge
Cambridge, Ontario, Canada
Cambridge follows the Region of Waterloo's seasonal water-use schedule from May 31 to September 30.
Key information
Cambridge follows the Region of Waterloo's seasonal water-use schedule from May 31 to September 30. Lawn watering has a weekday schedule, while gardens, vehicle washing and pool top-ups use odd or even dates.
On this page
At a glance
| Task | Key detail |
|---|---|
| When do seasonal restrictions apply? | The annual regional conservation bylaw operates from May 31 to September 30. |
| Which addresses water on Wednesday to Friday? | Addresses ending in 4 or 5 use Wednesday; 6 or 7 use Thursday; 8 or 9 use Friday. |
| Can I use a watering can at other times? | The City says handheld watering cans or buckets, including rain barrels, can be used anytime. |
Sources: Water | City of Cambridge
Your next steps
- Find your address ending
Find your address ending.
- Match the watering weekday
Match the watering weekday.
- Use the listed time windows
Use the listed time windows.
Sources: Water | City of Cambridge
Lawn watering by final address digit
| Last digit | Lawn weekday | Permitted times |
|---|---|---|
| 0 or 1 | Monday | 5:30am to 10am and 7pm to 11pm |
| 2 or 3 | Tuesday | 5:30am to 10am and 7pm to 11pm |
| 4 or 5 | Wednesday | 5:30am to 10am and 7pm to 11pm |
| 6 or 7 | Thursday | 5:30am to 10am and 7pm to 11pm |
| 8 or 9 | Friday | 5:30am to 10am and 7pm to 11pm |
Sources: Official service rules
Season, hours and lawn weekdays
When do seasonal restrictions apply?
The annual regional conservation bylaw operates from May 31 to September 30. This guide describes that regular schedule as checked October 14, 2026, after the season. Check the current regional notices for any additional restrictions before the next watering season.
Source: Water | City of Cambridge
What times may I water a lawn?
On the assigned lawn-watering day, the listed windows are 5:30am to 10am and 7pm to 11pm. The schedule is once a week by the final digit of the street address. Other outdoor uses follow a different date rule.
Source: Water | City of Cambridge
Which addresses water on Monday or Tuesday?
Addresses ending in 0 or 1 have Monday lawn watering. Those ending in 2 or 3 have Tuesday. Use the service property's street number rather than a phone number, account number or the calendar date.
Source: Water | City of Cambridge
Sources: Water | City of Cambridge
Alternating dates and method exceptions
Which addresses water on Wednesday to Friday?
Addresses ending in 4 or 5 use Wednesday; 6 or 7 use Thursday; 8 or 9 use Friday. These are lawn-watering days. The page does not assign regular lawn watering to Saturday or Sunday.
Source: Water | City of Cambridge
When can I water gardens or wash a vehicle?
Gardens, vehicle washing and pool top-ups follow alternating dates during the same 5:30am-to-10am and 7pm-to-11pm windows. Odd-ending addresses use odd-numbered dates; even-ending addresses use even-numbered dates.
Source: Water | City of Cambridge
Does that mean an even address can water its lawn every other day?
No. The alternating-date schedule is for other outdoor water use. Regular lawn watering remains once a week on the assigned weekday. Keep the two schedules separate when setting an irrigation timer.
Source: Water | City of Cambridge
Sources: Water | City of Cambridge
Temporary permits and efficient systems
Can I use a watering can at other times?
The City says handheld watering cans or buckets, including rain barrels, can be used anytime. That is a specific method exception. It should not be interpreted as permission to leave a sprinkler or hose-based system running outside its schedule.
Source: Water | City of Cambridge
What if I install sod, seed or nematodes?
Additional watering days require a temporary permit through the Region of Waterloo. Apply through the linked regional outdoor-water-use permit service. A newly planted lawn does not automatically receive an exemption without that permit.
Source: Water | City of Cambridge
How should I set up a sprinkler efficiently?
Check for leaks and damaged heads, aim away from sidewalks and roads, and turn the system off during or after rain. The City suggests smart controllers or soil-moisture sensors that skip watering when the ground is already wet.
Source: Water | City of Cambridge
Where can I check the current rules?
The Cambridge water page links the Region's water conservation and outdoor-water-use pages, including temporary permits. Follow current regional notices for changes. A City directory entry is a reference to the rules, not a live drought or restriction alert.
Source: Water | City of Cambridge
Sources: Water | City of Cambridge