Arvada CO Water Restrictions 2026

Current water restrictions in Arvada, Colorado

Arvada is under Stage 1 Mandatory water restrictions, limiting outdoor irrigation to two assigned days per week, effective April 15, 2026.

The City of Arvada declared Stage 1 restrictions in response to worsening drought conditions across the Front Range. The restrictions took effect April 15, 2026, and will remain in place until conditions improve — there is no fixed end date. The City of Arvada manages its water utility and issued the declaration under its municipal water conservation authority. Residents can find official updates at arvada.org.

Colorado is experiencing a state-level drought emergency, with widespread mandatory restrictions across the Front Range. Denver Water declared its own Stage 1 drought on March 25, and more than 20 Front Range cities are now operating under mandatory watering schedules, including some neighboring communities at more severe stages.

Arvada sources a significant portion of its water from the Colorado-Big Thompson Project and Ralston Reservoir, both of which are under stress from reduced mountain snowpack and elevated seasonal demand. Stage 1 is the entry-level mandatory tier — it restricts but does not eliminate outdoor watering.

Practically speaking: a resident may water their garden only on their two city-assigned days, and only outside the 10 a.m.–6 p.m. window. Watering on a Wednesday morning is allowed only if Wednesday is one of your two assigned days and you water before 10 a.m. or after 6 p.m. If Wednesday is not an assigned day, watering on that day is a violation regardless of the time.

Your assigned watering schedule

Arvada assigns watering days based on property address. Homes and businesses with odd-numbered street addresses typically water on one set of days, while even-numbered addresses water on the alternate days. Confirm your specific assigned days through the City of Arvada's water utility portal at arvada.org or by checking your most recent utility correspondence, as the city may publish updated day assignments alongside its Stage 1 declaration.

Multi-family residential properties and commercial accounts generally follow the same odd/even address framework, but large-scale irrigation accounts may have supplemental conditions specified in their commercial water service agreement. Property managers of apartment complexes and HOA common areas should contact Arvada's water utility directly to confirm their assigned days and verify that irrigation controllers are programmed accordingly.

Drip irrigation and soaker hoses are fully exempt from both the day restriction and the prohibited midday hours, making them the most practical watering method during Stage 1. If you have established trees on your property — including cottonwood (Populus deltoides), Rocky Mountain juniper (Juniperus scopulorum), or honeylocust (Gleditsia triacanthos), all of which are common in Arvada's urban canopy — deep, infrequent drip watering at the root zone should be prioritized over overhead lawn irrigation. Mature trees typically need water every 7–14 days during drought, and losing an established tree is a far greater loss than a temporarily dormant lawn.

Fines and penalties

The City of Arvada issues a written warning for the first confirmed violation — no fine is assessed initially. Repeat violations result in monetary fines, and continued noncompliance can lead to escalating penalties. In severe cases under higher restriction stages, the city retains authority to install a flow-restricting device on a meter, which limits water pressure to the property until compliance is achieved and the device is removed at the account holder's cost.

Enforcement in Arvada is conducted through a combination of citizen complaint reports and field patrols by utility staff. Residents can report suspected violations online through the City of Arvada's utilities department. The city does utilize automated meter infrastructure (AMI) that records consumption data at intervals, which can flag unusual usage patterns consistent with prohibited daytime or off-schedule irrigation. Appeals to warning notices or fines can be directed to the Arvada water utility customer service office; the city typically processes written appeals within two to three business weeks.

Other outdoor water rules

Stage 1 restrictions extend beyond lawn irrigation schedules. The following outdoor water uses are also subject to rules during Arvada's Stage 1 Mandatory period:

• Vehicle washing: Washing personal vehicles at home is restricted to assigned watering days only, and only using a hose with an automatic shut-off nozzle. Commercial car washes with water recirculation systems are permitted without day restrictions.
• Pool and hot tub filling: Initial filling of new pools or spas requires a permit through the City of Arvada; topping off existing pools to offset evaporation loss is generally allowed but discouraged under Stage 1. Pool covers are strongly recommended to reduce evaporation in Arvada's dry, high-altitude climate.
• Ornamental fountains: Decorative water features and fountains must be equipped with recirculating pumps; single-pass flow-through fountains that discharge water to drain are prohibited.
• Pressure washing: Pressure washing of driveways, sidewalks, and exterior surfaces is discouraged under Stage 1 and should be deferred unless required for health or safety reasons. If necessary, use of a shut-off nozzle is required.
• Construction water: Dust suppression and concrete curing on active construction sites must use the minimum water necessary; contractors should coordinate with the City of Arvada utilities department for any large-volume temporary water accounts.
• Restaurant table water: Restaurants are asked to serve water only upon customer request, consistent with Colorado's voluntary conservation guidance at Stage 1.

Arvada's water supply and source

Arvada's water supply comes from two primary sources: the Colorado-Big Thompson (C-BT) Project, which delivers transmountain water from the western slope of the Rockies via the Adams Tunnel under Rocky Mountain National Park, and locally stored water in Ralston Reservoir, located northwest of the city. Ralston Creek feeds into this system and serves as a critical local storage buffer.

Treated water is delivered through the Arvada Water Treatment Plant (also referred to as the Ralston Water Treatment Plant), which processes raw water drawn from Ralston Reservoir and the C-BT system. The plant has a treatment capacity sufficient for Arvada's population but depends heavily on upstream storage levels that fluctuate with precipitation, snowmelt timing, and annual C-BT allocation units purchased by the city.

Arvada participates in the Northern Colorado Water Conservancy District (Northern Water), which administers the C-BT Project. Each year, Northern Water sets a C-BT "quota" — expressed as a percentage of full allocation — that determines how much water project participants can actually use. In drought years, a reduced quota directly constrains Arvada's available supply, regardless of what's sitting in Ralston Reservoir.

Arvada also holds water rights in the South Platte River basin through both senior and junior appropriation rights under Colorado's prior appropriation doctrine. During dry years, junior rights are curtailed first, meaning Arvada must rely more heavily on stored C-BT supplies and reservoir carryover. The combination of a below-average snowpack in the Colorado Rockies, reduced C-BT quota, and elevated demand entering the 2026 irrigation season is the direct driver behind the Stage 1 mandatory restrictions currently in effect.

HOA rules during water restrictions

Colorado homeowners are protected by CRS § 37-60-126, which prohibits homeowners associations from fining or penalizing a property owner for failing to irrigate in a manner that conflicts with a mandatory government-ordered water restriction. Under this statute, if your lawn browns or your landscaping declines as a direct result of complying with Arvada's Stage 1 Mandatory restrictions, your HOA cannot lawfully enforce appearance standards that require you to maintain green grass or fully irrigated landscaping during the restriction period.

This protection applies specifically when the city-imposed restriction is mandatory — which Arvada's current Stage 1 declaration is. Keep a copy of the City of Arvada's Stage 1 restriction notice and document any HOA communication in writing. If your HOA issues a violation notice related to lawn appearance during the restriction period, respond in writing citing CRS § 37-60-126 and the current restriction phase.

Use the following as a template response to your HOA:

"This letter is to notify [HOA Name] that my property at [address] is currently subject to Stage 1 Mandatory water restrictions issued by the City of Arvada, effective April 15, 2026. Any reduction in lawn appearance or irrigation frequency is a direct result of compliance with these mandatory restrictions. Under Colorado Revised Statutes § 37-60-126, homeowners associations are prohibited from imposing fines or penalties for failure to irrigate in a manner that conflicts with a government-ordered mandatory water restriction. I respectfully request that any pending landscaping violation notice be withdrawn, and that no further action be taken while the City of Arvada's Stage 1 Mandatory restrictions remain in effect."

Lawn survival guide for Arvada

Arvada's climate — semi-arid, at roughly 5,400 feet elevation, with hot summers and low humidity — supports cool-season turfgrasses that go dormant rather than die during moderate drought stress. Managing your lawn correctly during Stage 1 will reduce the water needed on your two assigned days and improve survival odds through the restriction period.

At Arvada's elevation, mowing height matters more than it does at lower altitudes. Keep Kentucky Bluegrass and Tall Fescue at 3 to 3.5 inches during restriction periods — taller grass blades shade the soil, slow evaporation, and reduce heat stress. Avoid mowing stressed, dry grass; wait until the day after your assigned watering day when blades have recovered some turgor. Do not apply nitrogen fertilizer during Stage 1 restrictions — pushing growth increases water demand and stresses already drought-limited roots.

If your lawn is predominantly Kentucky Bluegrass and it browns completely, do not panic. Bluegrass can survive 4 to 6 weeks of full dormancy and recover once water is restored. Buffalograss and Blue Grama, both native to the Colorado plains, are the most logical long-term options for Arvada lawns facing recurring restrictions — they require as little as 12 to 18 inches of annual precipitation once established and need virtually no supplemental irrigation through August if properly rooted.

Frequently asked questions

What days can I water my lawn at my Arvada address?

Your assigned watering days are determined by your property's street address under the City of Arvada's Stage 1 schedule — odd-numbered addresses water on one set of days and even-numbered addresses on the other. Confirm your specific assigned days on the City of Arvada's official utilities page at arvada.org or check your water utility account correspondence issued alongside the April 15, 2026 Stage 1 declaration. All outdoor irrigation must occur before 10 a.m. or after 6 p.m. on those assigned days.

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

Yes, but only on your two assigned watering days, and you must use a hose equipped with an automatic shut-off nozzle. Letting a hose run freely while washing a vehicle is not permitted under Stage 1 rules. If you prefer to wash outside your assigned days, use a commercial car wash that recirculates water — those facilities are exempt from the day-based schedule.

What happens if I water on the wrong day in Arvada?

Your first confirmed violation results in a written warning with no monetary penalty. A second violation triggers a fine from the City of Arvada, and further violations can result in escalating fines and, in extreme cases, installation of a flow-restricting device on your water meter at your expense. Violations can be reported by neighbors through Arvada's utilities department, and automated meter data can corroborate off-schedule irrigation.

Does Arvada offer rebates for replacing turf with drought-tolerant landscaping?

The City of Arvada has participated in water efficiency rebate programs in partnership with Northern Colorado Water Conservancy District and utility-level conservation incentives. Rebates for turf removal and conversion to xeriscape or native planting have been offered in prior years. Check the current program availability and rebate amounts directly at arvada.org under the water conservation or utilities section, as funding availability changes annually and Stage 1 conditions often prompt updated incentive offerings.

Is drip irrigation exempt from Arvada's Stage 1 watering day restrictions?

Yes. Drip irrigation systems and soaker hoses are exempt from both the two-day-per-week schedule and the 10 a.m.–6 p.m. prohibited hours. This makes drip systems the most flexible watering option available under Stage 1. Using drip irrigation for vegetable gardens, flower beds, and tree root zones is strongly encouraged by the City of Arvada as an efficient alternative to overhead sprinklers.

My HOA sent me a warning about my brown lawn — do I have to comply?

No. Colorado Revised Statutes § 37-60-126 prohibits HOAs from penalizing homeowners for lawn browning that results directly from compliance with mandatory government water restrictions. Arvada's Stage 1 declaration is mandatory, which triggers this protection. Respond to your HOA in writing, cite CRS § 37-60-126, and reference the City of Arvada's Stage 1 Mandatory restriction effective April 15, 2026. Keep copies of all correspondence.

Can I fill or top off my swimming pool during Stage 1 restrictions?

Topping off an existing pool to replace evaporation loss is generally permitted under Stage 1, but should be minimized. Arvada's dry, high-altitude climate causes significantly higher pool evaporation rates than lower-elevation cities — a pool cover can reduce evaporation by up to 90 percent, which is the most effective way to maintain your water level without using additional municipal supply. Filling a brand-new pool requires coordination with the City of Arvada utilities department.

How does Arvada's Stage 1 compare to what neighboring cities are doing?

Arvada's Stage 1 is relatively moderate compared to conditions elsewhere on the Front Range right now. Erie has declared a Level 4 Emergency with all irrigation prohibited. The Eagle River service area is at Stage 3. Denver Water is also at Stage 1, similar to Arvada. Stage 1 allows continued outdoor watering with scheduling restrictions, while Stage 2 and above in Arvada would impose stricter day limits, ban certain water uses entirely, and carry higher fines. Current conditions across Colorado suggest that if drought conditions worsen through summer 2026, escalation to Stage 2 is possible.

What time can I water in Arvada?

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

When will water restrictions end in Arvada?

Current Stage 1 Mandatory restrictions are in effect through Until conditions improve. Monitor https://www.arvada.org for the latest status.

Can I hand water during Arvada 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 City of Arvada.

How do I report a water waste violation in Arvada?

Contact City of Arvada or visit https://www.arvada.org. Most utilities accept online reports and respond within 48 hours.