DuPage County, IL Landscaping Rules: Water Restrictions (2026)
Water restrictions in DuPage County, IL, also called the watering schedule, outdoor irrigation rules, or drought ordinance, set which days and hours you can run sprinklers or irrigation.
Key Facts
- Restricted season
- May 15 through September 15
- No-water hours
- 10:00 a.m. to 7:00 p.m. banned
- Watering schedule
- Odd address = odd days
- Fine range
- $100 to $1,000 per violation
- Who it covers
- County public water system customers only
Summary
DuPage County's public water utility bans unrestricted lawn sprinkling from May 15 through September 15, limiting outdoor watering to before 10 a.m. or after 7 p.m. on an odd/even schedule tied to street address and calendar day.
...unrestricted lawn sprinkling will not be allowed from May 15 to September 15 of each year. ... Outside watering shall not be used on any day between the hours of 10:00 a.m. and 7:00 p.m., when evaporation is at its highest. Outside watering will be allowed before 10:00 a.m. or after 7:00 p.m., as determined by street number and day of the month (odd/even sequence). Odd street addresses may water on the odd days of the month and even street addresses may water on the even days of the month.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 14 Update 1).
Full Breakdown
Under DuPage County Code Sec. 36-347, water conservation practices apply to properties served by the County's own public water system. From May 15 through September 15 each year, unrestricted lawn sprinkling is barred, and outdoor watering is prohibited between 10:00 a.m. and 7:00 p.m., when evaporation is highest. Watering is allowed only before 10:00 a.m. or after 7:00 p.m., on a schedule keyed to street number: odd-numbered addresses water on odd calendar days, even-numbered addresses on even days. Lawns less than three months old may get a County-approved exemption, and new or replacement sprinkler systems must use a WaterSense-labeled irrigation controller. The Superintendent of Public Works sets and enforces the schedule and may grant variances.
Violations & Fines
Violating the Superintendent's watering restrictions carries a fine of not less than $100 and not more than $1,000 per violation, plus any other remedy available at law or equity under 55 ILCS 5/5-113 and 5/5-15001.
Frequently Asked Questions
Does this watering schedule apply to every DuPage County home?
Can I hand-water new plants outside the allowed hours?
Sources & Official References
Other rules in DuPage County
How DuPage County compares: Cities with the Strictest Water Restrictions·Compare DuPage County to another location·View the Illinois landscaping rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.