Littleton CO Water Restrictions 2026

Current water restrictions in Littleton, Colorado

Littleton is under Stage 1 Mandatory restrictions declared by Denver Water, limiting outdoor irrigation to two assigned days per week through October 1, 2026.

Denver Water declared Stage 1 drought restrictions on March 25, 2025, responding to below-average snowpack in the South Platte and Blue River basins and declining storage levels across its reservoir system. A large portion of Littleton falls within the Denver Water service area, meaning those customers must comply with Denver Water's Stage 1 rules directly — not a separate city ordinance. Residents served by other providers, such as Centennial Water and Sanitation District or Littleton/Englewood Wastewater Treatment Plant customers on a different supply, should verify their provider's current status separately.

Colorado is experiencing a Stage 1–4 drought statewide, with over 20 Front Range municipalities under mandatory schedules. Denver Water's Stage 1 declaration is among the more moderate active restrictions — Erie is at Stage 2 Drought (downgraded from Level 4 in May), now allowing 2 days/week watering, and the Eagle River service area is under Stage 3 — but Stage 1 in Littleton is still mandatory, not voluntary.

Practically speaking: a Littleton resident with an odd-numbered street address cannot water their lawn or garden with sprinklers on a Wednesday morning at 9 a.m. — Wednesday is one of their assigned days, but watering before 10 a.m. is actually allowed (the restricted window is 10 a.m. to 6 p.m.). They may water Wednesday before 10 a.m. or after 6 p.m. However, they cannot run sprinklers on a Monday or Friday regardless of time. Hand-watering with a shut-off nozzle and drip irrigation remain exempt from day and hour limits.

For current status and address lookup, contact Denver Water at 303-893-2444 or visit denverwater.org.

Your assigned watering schedule

Your assigned watering days are determined by the last digit of your street address number, not your ZIP code or account number. An address at 4832 South Curtice Street is even, so watering days are Sunday and Thursday. An address at 5701 West Long Avenue is odd, so watering days are Wednesday and Saturday. If you are unsure whether your address qualifies as even or odd, Denver Water's online address lookup tool at denverwater.org confirms your specific assignment.

Multi-family residential properties — apartment complexes, condominiums, and townhome communities common in Littleton's older downtown neighborhoods and newer Highlands Ranch-adjacent developments — follow the same address-based schedule using the primary street address of the property or complex. Commercial accounts in Littleton served by Denver Water are held to the same Stage 1 two-day schedule, though large commercial irrigation accounts may have been issued a site-specific letter from Denver Water with tailored compliance requirements.

Littleton's urban tree canopy includes mature plains cottonwood, honeylocust, and Austrian pine — all of which establish deep root systems but are vulnerable during extended heat. Under Stage 1, trees are best served by directing one of your two allowed watering sessions toward slow, deep soil saturation at the drip line rather than shallow lawn irrigation. Drip emitters and soaker hoses placed at the root zone are fully exempt from the two-day schedule, making them the most efficient strategy for keeping established trees alive without consuming your allotted irrigation days.

Fines and penalties

Denver Water enforces Stage 1 compliance through a combination of customer-reported complaints, field patrol by water conservation inspectors, and data flagged by advanced metering infrastructure. Denver Water has deployed smart meters across much of its service area, including Littleton customers, that transmit hourly usage data. An irrigation spike on a non-assigned watering day — say, a large flow event on a Monday morning for an odd-addressed property — can trigger a compliance review without any neighbor complaint. Inspectors also conduct neighborhood sweeps during peak irrigation hours in summer months, particularly on known violation-heavy days.

If you receive a violation notice and believe it was issued in error — for example, because you were running drip irrigation (which is exempt) or watering newly installed sod under a registered establishment permit — Denver Water has a formal appeals process through its customer service office at 303-893-2444. Appeals must typically be submitted in writing within a specified window noted on the violation notice itself. Response times for reported violations are generally within one to three business days during the active watering season.

Other outdoor water rules

Stage 1 in Littleton covers more than lawn irrigation schedules. The following restrictions apply to all Denver Water customers in the service area:

• Car washing: Washing vehicles at home is permitted only with a hand-held hose equipped with a self-closing shutoff nozzle. Leaving a hose running unattended is prohibited. Commercial car washes that recirculate water are not restricted.
• Driveways and hard surfaces: Hosing down driveways, patios, sidewalks, or parking areas with potable water is prohibited. Use of a broom or blower is required instead.
• Swimming pools and hot tubs: Initial filling of new pools and refilling pools drained for repair is discouraged but not explicitly prohibited under Stage 1; topping off to replace evaporation is permitted. Pools should be covered when not in use to reduce evaporation — Denver's low relative humidity causes significant daily pool water loss.
• Decorative fountains: Ornamental fountains and water features must be turned off unless they recirculate water entirely. Single-pass or drain-to-waste water features must be shut down.
• Pressure washing: Pressure washing of structures or surfaces using a constant-flow connection is prohibited. If pressure washing is necessary for property maintenance, use a self-closing nozzle and minimize flow.
• Landscape installation: New non-exempt landscaping that requires intensive establishment irrigation should be registered with Denver Water in advance to qualify for a temporary watering exception.

Littleton's water supply and source

Most Littleton residents served by Denver Water receive water ultimately sourced from the South Platte River and its mountain tributaries, collected and stored in Denver Water's system of transmountain and Front Range reservoirs.

The primary storage facilities in Denver Water's system include Dillon Reservoir on the Blue River in Summit County, which holds up to 257,000 acre-feet and feeds water eastward through the Harold D. Roberts Tunnel under the Continental Divide. Gross Reservoir in Boulder County, currently undergoing a federally approved expansion to increase capacity by approximately 77,000 acre-feet, serves as a critical South Boulder Creek storage point. Cheesman Reservoir and Marston Reservoir are part of the South Platte system that serves the southern portions of Denver Water's territory — the area most relevant to Littleton customers.

Water delivered to Littleton passes through the Kassler Water Treatment Plant, located along the South Platte River within Littleton's own boundaries near Waterton Canyon. The Kassler facility is one of Denver Water's older treatment plants and processes water drawn from the South Platte before distribution to southern service area customers. The Foothills Water Treatment Plant in Jefferson County supplements supply to this region during peak demand periods.

The Stage 1 drought declaration issued March 25, 2025 reflects the combined pressure of reduced Blue River and South Platte inflows, lower-than-average snowpack runoff timing, and elevated early-season demand. Denver Water manages supply across roughly 1.5 million customers spanning Denver and surrounding suburbs, with Littleton representing the southern edge of that distribution network. Storage levels at Dillon Reservoir are monitored publicly at denverwater.org and directly inform what drought stage is declared each season.

HOA rules during water restrictions

Colorado law explicitly protects Littleton homeowners from HOA enforcement actions related to lawn appearance during declared water restrictions. CRS § 37-60-126 prohibits homeowners associations from fining or penalizing a property owner for allowing turf to go dormant or brown when outdoor watering is restricted by a governmental entity or water provider. Because Denver Water's Stage 1 declaration is a mandatory governmental restriction, it triggers these protections directly.

This means your HOA in Littleton — whether in a Highlands Ranch community governed by the HRCA, an older Ken Caryl Ranch neighborhood, or a newer townhome complex near downtown — cannot legally fine you for a brown or dormant lawn while Stage 1 restrictions are in effect. The statute also applies when you are voluntarily complying with a provider's water budget or conservation program. The protection covers dormancy; it does not excuse nuisance violations unrelated to watering, such as excessive dead plant debris or failure to maintain other property elements.

If your HOA issues a violation notice for lawn appearance during the current Stage 1 period, use the following response:

"This notice is issued in error under Colorado Revised Statute § 37-60-126. My property is currently subject to mandatory Stage 1 irrigation restrictions declared by Denver Water on March 25, 2025. Under CRS § 37-60-126, no HOA fine or penalty may be assessed for lawn dormancy or browning that results from compliance with these mandatory water restrictions. I am requesting this notice be rescinded immediately and that no fine be recorded against my account."

Send this response via certified mail and retain a copy. If the HOA continues enforcement action, contact Denver Water's conservation team or consult a Colorado HOA attorney, as CRS § 37-60-126 is a state statute that supersedes HOA governing documents.

Lawn survival guide for Littleton

Littleton sits at roughly 5,300 feet elevation on the Colorado Front Range, which means its turfgrass picture is dominated by cool-season varieties that go dormant under heat and drought stress rather than dying outright. Understanding which grass you have determines how you allocate your two allowed watering days.

At Littleton's altitude, evapotranspiration rates spike in late June and July but morning temperatures are cooler than lower-elevation Front Range cities. This means watering early in the morning — before 10 a.m. on your assigned days — is especially effective, as cooler air reduces evaporation loss before the sun hits full intensity. Raise your mowing height: Kentucky Bluegrass should be cut no lower than 3 inches and Tall Fescue at 3.5 to 4 inches during summer. Taller blades shade the soil, slow moisture loss, and help turf tolerate the two-day watering interval without going fully dormant.

Denver Water's Xeriscape rebate program — which pays per square foot for removing traditional turfgrass and replacing it with water-wise landscaping — is particularly relevant for Littleton homeowners with large Kentucky Bluegrass lawns. Converting front yards to Buffalograss, native perennials, or low-water ground covers not only eliminates the pressure of a two-day schedule but qualifies for direct financial incentives. Details are at denverwater.org under the Conservation Rebates section.

Frequently asked questions

What days can I water if my Littleton address is odd-numbered?

Odd-numbered addresses — for example, 3417 West Caley Avenue — are assigned Wednesday and Saturday as their two watering days under Denver Water's Stage 1 schedule. Irrigation must occur outside the 10 a.m. to 6 p.m. window, meaning before 10 a.m. or after 6 p.m. on those days only. Watering on any other day of the week with sprinklers or an irrigation system is a violation.

What days can I water if my Littleton address is even-numbered?

Even-numbered addresses — for example, 6824 South Windermere Street — are assigned Sunday and Thursday. The same 10 a.m. to 6 p.m. restriction applies. Watering must happen before 10 a.m. or after 6 p.m. on those two days only. All other days, sprinkler and irrigation system use is prohibited.

Can I wash my car at home in Littleton right now?

Yes, but only with a hand-held hose that has a self-closing shutoff nozzle attached. You cannot leave a running hose on your vehicle unattended. There is no restriction on which day you wash your car, and commercial car washes that recycle water are unrestricted under Stage 1. Home car washing does not count against your two assigned irrigation days since it is not landscape watering.

Does Denver Water use smart meters to catch violations in Littleton?

Yes. Denver Water has deployed advanced metering infrastructure (AMI) across its service area, including Littleton customers, that records usage data hourly. An unusually high flow event logged on a non-assigned watering day can trigger a compliance review automatically, without requiring a neighbor complaint. This means irrigation system malfunctions or forgotten timer settings on off-days carry real detection risk, not just inconvenience.

How do I report a neighbor who is watering on the wrong days?

You can report a violation directly to Denver Water at 303-893-2444 or through the online violation report form at denverwater.org. Provide the street address of the property, the date and time of the observed violation, and what you witnessed (e.g., sprinklers running on a Tuesday at 8 a.m. for an even-addressed property). Denver Water conservation staff typically follow up within one to three business days during the active season.

What rebates does Denver Water offer for turf removal in Littleton?

Denver Water's Turf Replacement Rebate program pays qualifying customers per square foot of traditional bluegrass or fescue lawn replaced with water-efficient alternatives such as Buffalograss, Blue Grama, or approved xeriscape plantings. Rebate amounts and application requirements are posted at denverwater.org under the Conservation Rebates section and are updated seasonally. Applications require before and after photos and proof of plant material. Given Stage 1 restrictions, Denver Water has historically increased rebate availability during active drought declarations.

My HOA sent me a fine for a brown lawn. Is that legal under Stage 1?

No. Colorado Revised Statute § 37-60-126 prohibits HOAs from fining homeowners for brown or dormant turf when a government entity or water provider has declared mandatory restrictions. Denver Water's Stage 1 declaration on March 25, 2025 triggers this protection. Respond to the HOA in writing citing CRS § 37-60-126, the Denver Water Stage 1 declaration date, and request the fine be rescinded. See the template letter in the HOA section above.

When do Stage 1 restrictions end in Littleton?

The current Stage 1 restrictions run through October 1, 2026, based on Denver Water's declared restriction period. However, Denver Water can escalate to Stage 2 or higher if reservoir storage levels decline further, or can lift restrictions early if conditions improve significantly. Check current status at denverwater.org or call 303-893-2444 before assuming restrictions have ended. Denver Water typically communicates stage changes through its website and direct customer notifications.

What time can I water in Littleton?

Watering is allowed Not 10am-6pm. Watering outside these hours is a violation even on your assigned day.

Can I hand water during Littleton water restrictions?

Yes. Hand watering with a hose fitted with a shut-off nozzle is generally allowed on any day during permitted hours. Drip irrigation and soaker hoses are also typically exempt from the day-of-week schedule. Confirm specifics with Denver Water.