Silverthorne CO Water Restrictions 2026

Current water restrictions in Silverthorne, Colorado

Silverthorne has two levels of restriction active simultaneously, which makes it fundamentally different from any other city on water-restrictions.com. Understanding which system governs your property is essential, as the consequences of watering on the wrong day or under the wrong rules can result in fines up to $500.

The Town of Silverthorne enacted Phase 3 mandatory restrictions on May 28, 2026 — its most severe drought level — limiting lawn watering to two assigned days per week between 6pm and 9am. This Phase 3 stage is the fourth and final step in Silverthorne's drought-response framework and applies only when conditions become critical. The Town Council approved the enforcement fine schedule on May 27, with penalties taking effect June 10 after a second reading. The initial enforcement period involved warnings, but fines are now in full effect.

Separately, the Willow Brook Metropolitan District, which serves the Ruby Ranch community within Silverthorne's geographic borders, declared emergency drought on May 1 and banned ALL outdoor water use through December 31, 2026. This is not a reduction — it is a complete prohibition on irrigation, car washing, and filling pools or hot tubs with district water. Ruby Ranch residents who own pools and wish to maintain them must purchase water from outside the district and haul it in manually, at significant expense and effort. This reflects the extraordinary severity of the water crisis in the watershed.

Critical: not every Silverthorne address is on the Town water system. Some are served by Willow Brook Metro District. Verify your provider immediately with Silverthorne Public Works at 970-262-7300 before assuming which rules apply. Using the wrong schedule or ignoring a total ban could result in violation notices and fines. At roughly 9,000 feet elevation in Summit County — now in exceptional drought (D4), the U.S. Drought Monitor's most severe category — Silverthorne is the highest-elevation city on this site. The Blue River, which flows through downtown Silverthorne and feeds the Colorado River system, is at historic lows. Snowpack in the upper Blue River basin came in at approximately 55 percent of the 30-year normal, the primary trigger for both the Town and the District to escalate to emergency measures.

Your assigned watering schedule

Town of Silverthorne (Phase 3 Mandatory Restrictions) — two assigned days per week, 6pm–9am only:

• Even-numbered addresses: Tuesday and Saturday
• Odd-numbered addresses: Sunday and Wednesday

The window of 6pm to 9am is deliberately set to avoid peak evaporation hours. Nighttime and early-morning watering minimizes water loss to heat and wind, a conservation principle every homeowner should apply even during non-drought periods. No outdoor watering is permitted outside these windows, on other days, or for longer than the assigned two-day cycle. Violations, detected through smart meters, can trigger fines immediately.

Ruby Ranch (Willow Brook Metro District — Emergency Total Ban): there is no watering schedule because there is no outdoor water use permitted whatsoever. This applies through December 31, 2026. Residents who want to fill a pool must purchase and haul water from outside the district. Some residents have transported water in tanker trucks or purchased bottled water in bulk — a costly reminder of how precious water becomes in severe drought. This total ban is not symbolic; it reflects the District's assessment that every drop is essential for human consumption and emergency firefighting.

The distinction between these two systems means that Ruby Ranch homeowners operate under far stricter constraints than Town residents, even though they live within the same municipality. This creates neighborhoods where one side of a street can water twice weekly and the other side cannot water at all.

Fines and penalties

Town of Silverthorne enforcement began with warnings for early violations after May 28. Fines of up to $500 per violation took effect June 10, 2026, following the Town Council's second reading on May 27. A "violation" typically means watering outside assigned days, outside allowed hours, or on a schedule that exceeds two days per week. The Town's smart water meters — installed across the service area — can detect outdoor-usage patterns by analyzing flow signatures, pressure fluctuations, and usage spikes at irregular times. This technology makes it difficult to hide violations; watering during daytime hours or on forbidden days will likely be flagged by the meter system.

Repeat violations increase the likelihood of escalated penalties. The town has committed to consistent enforcement to ensure fairness and maintain public compliance with the mandate. Ruby Ranch's total ban carries separate district penalties for any outdoor water use, typically issued as violation notices that can accumulate into liens or service disconnections if left unpaid.

For those living on the border between the two systems, there is no exemption. Your address determines your obligation. Confusion is not a defense against fines.

Other outdoor water rules

• Ruby Ranch (Willow Brook Metro District): no irrigation, no car washing, no pool or hot tub filling with district water — no exceptions.
• Town of Silverthorne: no daytime watering (outside the 6pm–9am window); no washing of hard surfaces (patios, driveways, vehicles) with potable water; repair leaks promptly — a slow drip can consume hundreds of gallons monthly and will be caught by smart-meter analysis.
• Smart-meter enforcement: meters flag unusual or off-schedule outdoor consumption. If your outdoor water use spikes during restricted hours or on forbidden days, the system will record it and trigger an investigation.
• Temporary-fill permits: Some municipalities allow one-time pool or landscape-fill permits during drought, but Silverthorne has not issued general permits during Phase 3 or the Ruby Ranch ban. Any fill request must go through Public Works.

Silverthorne's water supply and source

Town water originates from the Blue River and Straight Creek watershed, high in the headwaters of the Colorado River system at elevations above 10,000 feet. The Blue River flows north from the Divide and descends toward Lake Dillon, but Silverthorne draws its supply from upstream tributaries and groundwater recharged by snowmelt before the water reaches the main reservoir system. Nearby Dillon Reservoir — visible from many parts of town — is a major Denver Water facility and does not supply Silverthorne directly, though the two systems share the same watershed and snow-driven hydrology.

Silverthorne is entirely snowmelt-dependent. There is no significant groundwater aquifer at elevation; winter snow and spring runoff are everything. The 2025–2026 winter snowpack in the upper Blue River basin came in at approximately 55 percent of the 30-year normal, a deficit so severe that both the Town and Willow Brook Metro District escalated to their most restrictive stages. When snowpack fails, reservoir levels fall, and by early summer 2026, visible shorelines on Dillon and surrounding reservoirs had dropped dramatically.

The broader context: Summit County sits in the headwaters of the Colorado River, which supplies water to over 40 million people across seven western states. Silverthorne and similar high-country towns are the "first users" of Colorado River water, but they are also the first to feel the pinch when snowpack fails. The skiing industry — Keystone, Copper Mountain, and Vail nearby — consumes enormous volumes for snowmaking in winter, putting additional pressure on summer supplies. When combined with municipal growth, agricultural demand downstream, and a persistent megadrought linked to climate change, the result is a water-supply crisis that forces restrictions even in small communities like Silverthorne that would historically have had ample supply.

HOA rules during water restrictions

Colorado law provides statutory protections for homeowners during drought declarations, primarily CRS § 37-60-126 (the "Drought-Efficient Landscape" statute) and related provisions. Under this law, an HOA cannot fine a homeowner for allowing a lawn to go dormant or turn brown during a declared drought emergency. The statute explicitly prohibits HOAs from penalizing drought-tolerant landscaping, from requiring watering that exceeds the municipality's mandatory schedule, and from enforcing covenants that contradict water-conservation directives.

In practical terms, if Silverthorne's Phase 3 or Ruby Ranch's total ban is declared emergency drought (which it is), your HOA cannot force you to water beyond your two assigned days per week, and it cannot penalize your lawn for going dormant. Many HOAs have proactively suspended brown-lawn penalties during the 2026 drought; if yours has not, cite the statute. The town is your advocate here. Silverthorne Public Works can provide a formal drought-emergency declaration letter if needed for HOA disputes.

Additionally, the statute encourages (and protects) the conversion of lawn to water-wise plantings — native shrubs, perennials, and xeriscaping. An HOA cannot fine you for ripping out sod and planting drought-tolerant alternatives during an emergency.

Lawn survival guide for Silverthorne

At roughly 9,000 feet elevation, Silverthorne's growing season is short — approximately June through September — with hard frosts possible even in early June and late August. Lawns in Silverthorne are typically Kentucky Bluegrass, supplemented with limited Tall Fescue, and increasingly native mountain-grass mixes that evolved to thrive in seasonal drought and cold.

Kentucky Bluegrass is not fussy; it survives and even prefers dormancy. When water runs out or restrictions kick in, bluegrass goes dormant — it browns, but the roots remain alive and vigorous. Once water returns in fall or after drought ends, bluegrass rebounds quickly and greens within weeks. Do not panic about brown grass. In Silverthorne's climate, brown is normal and expected. Fighting it with stolen water (watering off-schedule) or hand-carrying buckets on forbidden days will only earn you a fine.

The High Country Conservation Center (based in Silverthorne) offers rebates for landscaping conversions during drought: removing lawn, installing drip irrigation on shallower-watered areas, mulching heavily, and planting native mountain shrubs and groundcovers. These rebates can offset 50 to 75 percent of conversion costs. Contact HCCC at 970-262-7300 (shared line with Public Works) for current incentives.

Best practices: Let bluegrass dormancy occur naturally; do not attempt to keep it green during Phase 3 or Ruby Ranch's ban — you will not succeed and will be fined. Instead, concentrate any hand-watering (if allowed by your address and day) on trees and shrubs, which are slow and expensive to replace at high elevation and do not have the dormancy resilience of grass. Mulch bare soil heavily (3–4 inches) to reduce evaporation. In Ruby Ranch, where no outdoor watering is allowed, focus on mulching and removing any competing weeds; wait until the ban lifts to do major landscaping.

Regarding Tall Fescue: native to cool climates but less cold-hardy than bluegrass at 9,000 feet. Use it sparingly and only in well-draining locations. The future of Silverthorne lawns is likely toward native mountain-grass mixes and low-water plantings — a shift that began before the drought but is now accelerating.

Frequently asked questions

Why does Silverthorne have two completely different sets of rules? The Town of Silverthorne runs one water system under Phase 3 (two days per week). The Willow Brook Metropolitan District, which serves the Ruby Ranch neighborhood within Silverthorne, has a separate supply, governance, and budget. When Willow Brook's headwater sources fell too low, the District declared its own emergency total ban, independent of the Town's Phase 3 order. Both are legally binding in their respective service areas. It is the result of two water utilities serving the same municipality.

How do I know which provider I'm on, and how do I check my address? Call Silverthorne Public Works at 970-262-7300 and provide your address. They will tell you whether you are on Town water or Willow Brook Metro District within seconds. Do not guess. If you receive a water bill, the provider name is printed on it.

Can Ruby Ranch residents fill a pool at all? Not with district water. The total ban is absolute through December 31, 2026. If you own a pool and want to maintain it, you must purchase water from outside the Willow Brook service area and haul it in. Some residents have used tanker trucks or bulk water vendors. It is expensive, but it is the only legal option.

What happens if I water on the wrong day? What are the fines exactly? Town fines start at warnings for first violations, then escalate to up to $500 per violation for subsequent breaches, effective June 10, 2026. Smart meters detect off-schedule watering, so you will likely be caught. Repeat violations can lead to liens or service restrictions. Ruby Ranch violations of the total ban trigger district penalties, separate and often higher.

If I am on Town water (Phase 3), can I hand-water plants on my non-assigned days? Phase 3 allows outdoor water use only on your two assigned days, between 6pm and 9am. Hand-watering with a hose on a forbidden day, even for a few minutes, is technically a violation. However, enforcement priorities may focus on irrigation-system violations detected by smart meters. To be safe, ask Public Works whether hand-watering on non-assigned days is permitted. Many municipalities have an informal exception for hand-watering, but Silverthorne's Phase 3 language is strict.

Will Phase 3 end, and when? Phase 3 remains in effect until snowpack, reservoir levels, and groundwater conditions improve sufficiently for the Town to drop to Phase 2 or Phase 1. This could be next year, or it could persist through 2027 or longer if the megadrought worsens. The Town will post updates on its website and at Public Works. The Ruby Ranch total ban is scheduled to lift on December 31, 2026, assuming conditions improve, but the District may extend it if drought persists.

What days can I water my lawn in Silverthorne?

Even addresses: Tue/Sat 6pm-9am; Odd addresses: Sun/Wed 6pm-9am (Town water only) Hand watering with a shut-off nozzle is typically allowed any day during permitted hours.

What time can I water in Silverthorne?

Watering is allowed 6pm-9am only. Watering outside these hours is a violation even on your assigned day.

When will water restrictions end in Silverthorne?

Current Phase 3 Mandatory Water Restrictions + Ruby Ranch Total Ban restrictions are in effect through Town Phase 3 until conditions improve; Ruby Ranch ban through Dec 31, 2026. Monitor https://www.silverthorne.org/town-government/public-works/water-restrictions for the latest status.

How do I report a water waste violation in Silverthorne?

Contact Town of Silverthorne Public Works + Willow Brook Metropolitan District at 970-262-7300 or visit https://www.silverthorne.org/town-government/public-works/water-restrictions. Most utilities accept online reports and respond within 48 hours.