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Douglas County, CO Landscaping Rules: Water Restrictions (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified July 2026

Water restrictions in Douglas County, CO, also called the watering schedule, outdoor irrigation rules, or drought ordinance, set which days and hours you can run sprinklers or irrigation.

Key Facts

Statewide ban
None for homeowners
Castle Rock
Every 3rd day, off 8am–8pm
Season
May 1 – Sept 30 (Castle Rock)
Parker Water
Assigned days by address
Denver Water
3 days/week, off 10am–6pm

Summary

Colorado has no statewide homeowner watering ban; your water provider sets the schedule. Castle Rock Water allows outdoor watering every third day before 8 a.m. or after 8 p.m., May 1–Sept. 30. Parker Water and Denver Water run their own assigned-day rules.

City-specific rules exist: Castle Rock has its own water restrictions rules that differ from Douglas County's county-level regulations. If you live in Castle Rock, check the city-specific page instead.

Residential watering is permitted every third day before 8 a.m. or after 8 p.m. on your designated watering day.

View official code

Full Breakdown

Watering rules in Douglas County are set by local utilities, not the county or state. Castle Rock Water assigns a designated day and permits watering every third day only before 8 a.m. or after 8 p.m., enforced May 1 through September 30; new landscape can get a temporary exemption. Parker Water & Sanitation District assigns days by even/odd address (typically Mon/Wed/Fri vs. Tue/Thu/Sat) and prohibits midday watering. Denver Water, serving parts of the north county, limits watering to set days per week and never between 10 a.m. and 6 p.m., May 1–Oct. 1. Drought declarations can tighten these to two days weekly.

Violations & Fines

Providers issue watering-violation notices; repeat waste can bring escalating surcharges or fines under the utility's schedule.

Frequently Asked Questions

Is there a statewide watering ban in Colorado?
No. Colorado sets no statewide homeowner watering ban; each water provider, like Castle Rock Water or Parker Water, sets its own schedule and drought stages.
When can I water in Castle Rock?
Every third day on your designated day, only before 8 a.m. or after 8 p.m., enforced May 1 through September 30.

Sources & Official References

Other rules in Douglas County

Noise Ordinances: Construction HoursSome RestrictionsNative PlantsSome RestrictionsNoise Ordinances: Amplified Music & Outdoor SoundSome RestrictionsNoise Ordinances: Aircraft NoiseSignificant RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsParking Rules: Loading ZonesSome RestrictionsFence Regulations: Material RestrictionsSignificant Restrictions

All Douglas County rules

How Douglas County compares: Cities with the Strictest Water Restrictions·Compare Douglas County to another location·View the Colorado landscaping rules overview

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Water Restrictions in Cities Across Douglas County

Castle Rock, CO