Boulder City NV Water Restrictions 2026

Current water restrictions in Boulder City, Nevada

Boulder City is under a Year-Round Mandatory Seasonal Schedule, limiting outdoor irrigation to a group-assigned watering days system enforced permanently by the City of Boulder City and coordinated with the Southern Nevada Water Authority (SNWA).

These restrictions are not a temporary emergency measure — they are a permanent fixture of life in Boulder City, codified in local ordinance and administered through the city's Public Works department. Boulder City sits at the entrance to Lake Mead National Recreation Area, giving residents an unusually direct view of the drought's consequences. The white "bathtub ring" etched into Lake Mead's canyon walls marks the former high-water line and serves as a constant, visible reminder of how far the reservoir has dropped.

Lake Mead, the primary water source for Boulder City and the greater Southern Nevada region, has reached historically low levels driven by a multi-decade drought on the Colorado River. Nevada has cut per-person water use by 48% since 2002, but Lake Mead remains under severe strain. The state operates under a year-round mandatory conservation framework enforced by SNWA, and Boulder City's local schedule aligns with that regional mandate.

Practically speaking: whether you can water your garden on a Wednesday morning depends on which watering group your address falls into. A Group A or Group C resident can irrigate on Wednesday during spring and fall — but only before 11:00 a.m. or after 7:00 p.m. from May through August. A Group B, D, or F resident cannot water on Wednesday at all during spring and fall. Knowing your group assignment is the first step to staying in compliance. Contact Boulder City Public Works at 702-293-9219 or visit bcnv.org/216/Water-Conservation to look up your property's group designation.

When can you water in Boulder City?

Your watering group in Boulder City is tied to your street address, typically determined by the last digit of your house number or your street name — Boulder City Public Works can confirm your exact group when you call 702-293-9219. The seasonal schedule shifts three times per year: spring/fall rules apply during the moderate shoulder months, summer rules open up daily irrigation (Monday through Saturday) to keep plants alive in Mojave Desert heat, and winter rules drop to a single assigned day per week to match the near-zero evapotranspiration demand.

The summer window (Monday–Saturday for all groups) is the most permissive, but the midday blackout period is strictly enforced from May through August. Running sprinklers at noon on a 108°F Boulder City afternoon violates both the city ordinance and wastes significant water to evaporation before it reaches roots. Early morning irrigation — before 11:00 a.m. — is strongly preferred.

Multi-family and commercial properties follow the same group-based day assignments but may have separate meter accounts that affect group classification. Landscape contractors managing HOA common areas should verify the group assignment for each individual meter on the property. Boulder City's desert landscape features blue palo verde trees, desert willow, and Joshua trees — all of which are well-adapted to the schedule when given deep, infrequent irrigation on allowed days rather than shallow daily watering.

Penalty schedule for water violations

Boulder City enforces its watering schedule through a combination of meter monitoring, field patrols by Public Works staff, and neighbor complaints submitted through the city's utility services line. SNWA supports enforcement regionally and can flag accounts showing usage patterns inconsistent with the assigned irrigation days. Violations can be reported directly to Boulder City at 702-293-9219, and the city typically responds to complaints within a few business days.

If you receive a water waste fee and believe it was issued in error — for example, if a sprinkler head failed and ran without your knowledge — you can contest the charge by contacting Boulder City Public Works directly. Documented equipment malfunctions reported promptly are often considered during the review process. However, first-time courtesy warnings are not guaranteed, and the city reserves the right to issue a fee on the first documented violation.

Other outdoor water rules

In Boulder City's Mojave Desert climate, pool evaporation is a significant year-round concern, and several outdoor water uses beyond lawn irrigation carry specific rules or best practices under local conservation guidelines.

• Swimming pools and spas: Filling or refilling pools is permitted but must use a cover to reduce evaporation. Pool draining and refilling purely for maintenance purposes is discouraged; partial water replacement is preferred.
• Car washing: Washing vehicles at home is allowed only with a hand-held hose equipped with a positive-shutoff nozzle. Letting water run continuously from a hose while washing is prohibited as water waste.
• Pressure washing: Permitted for safety and surface preparation, but using a running hose as a substitute for a pressure washer to clean driveways or sidewalks is classified as water waste.
• Decorative fountains: Recirculating fountains are allowed. Single-pass water features that discharge water to a drain are not permitted.
• Irrigation of non-vegetated surfaces: Watering hardscape, gutters, streets, or sidewalks — whether intentional or from misaligned sprinkler heads — is a violation subject to a water waste fee.
• Construction water: Contractors must obtain a temporary water use permit through Boulder City for dust control and compaction during construction projects.
• Restaurants: Water may only be served to diners upon request, not automatically placed at every setting — a statewide rule that applies in Boulder City.

Where Boulder City's water comes from

Boulder City's water supply comes almost entirely from Lake Mead, the reservoir formed by Hoover Dam on the Colorado River — and unlike any other city in Nevada, Boulder City sits directly adjacent to that reservoir's shoreline. The city receives its allocation through the Southern Nevada Water Authority (SNWA), which delivers Colorado River water via intake tunnels beneath Lake Mead. Boulder City is the gateway community to Lake Mead National Recreation Area, meaning its residents live alongside the very water source that supplies their taps.

The Colorado River water drawn from Lake Mead is treated at the Alfred Merritt Smith Water Treatment Facility in Henderson before distribution. Boulder City receives treated water through the SNWA regional delivery system and maintains its own local distribution infrastructure managed by Boulder City Public Works.

Lake Mead reached its lowest recorded level since filling in the 1930s in July 2022, dropping below elevation 1,040 feet above sea level. The reservoir stores water from the Colorado River's Upper Basin states (Colorado, Utah, Wyoming, and New Mexico) and Lower Basin states (Nevada, Arizona, and California). Nevada holds a junior water right of 300,000 acre-feet per year from the Colorado River compact — the smallest allocation of any state in the agreement.

Because Boulder City residents can see Lake Mead's bathtub ring from their own neighborhoods, the connection between daily irrigation habits and reservoir levels is more immediate here than almost anywhere else in the American West. Southern Nevada as a whole has reduced Colorado River consumption dramatically, but ongoing aridification of the Colorado River Basin means Lake Mead's recovery remains uncertain. There is no local groundwater aquifer backup of significance — the Colorado River and Lake Mead are Boulder City's water supply, start to finish.

Can your HOA fine you for a brown lawn?

Nevada Revised Statutes NRS § 116.31075 protects Boulder City homeowners from HOA fines or enforcement actions for landscape conditions directly caused by compliance with mandatory water restrictions. If your lawn browns, goes dormant, or suffers visible stress because you are following Boulder City's mandatory seasonal watering schedule, your HOA cannot penalize you for that outcome.

The protection applies specifically when the water restrictions are government-mandated — which Boulder City's year-round seasonal schedule qualifies as. However, the statute does not protect general neglect unrelated to watering limits, dead vegetation that predates the restriction period, or hardscape violations. Document your compliance: keep records of which days you irrigated and take dated photographs of your landscape condition during peak summer stress periods.

If your HOA sends a notice of violation related to your lawn's condition during the mandatory seasonal schedule, use the following response as a starting point:

"This notice references landscape conditions that are a direct result of my compliance with Boulder City's mandatory Year-Round Seasonal Watering Schedule, enforced by Boulder City Public Works and coordinated with the Southern Nevada Water Authority. Under Nevada Revised Statutes § 116.31075, a homeowners association may not impose fines or take enforcement action against a unit owner for landscape conditions caused by compliance with mandatory government-imposed water restrictions. I am watering on my assigned group days within permitted hours as required by city ordinance. Please withdraw this notice. If you have questions, contact Boulder City Public Works at 702-293-9219."

How to manage your lawn during drought

Boulder City's Mojave Desert climate supports warm-season grasses that handle extreme heat and can survive on limited irrigation. The following table reflects only grasses suited to Boulder City's conditions:

In Boulder City's climate, Bermudagrass is the most common turfgrass in active lawns, but SNWA and the city actively encourage converting traditional turf to desert-adapted landscaping. Bermudagrass goes completely dormant and brown in winter — that is normal and expected, not damage. During the summer schedule when daily irrigation is allowed (Monday–Saturday), deep and infrequent watering is still more effective than shallow daily cycles. Set rotary sprinkler heads to apply water slowly enough that it soaks in rather than runs off the caliche-dense soils common in the Boulder City area.

The more significant shift happening across Boulder City is the conversion of traditional turfgrass to desert landscaping featuring desert marigold, blackfoot daisy, decomposed granite, and low-water shrubs like brittlebush and desert sage. Nevada's nonfunctional turf ban — taking effect January 1, 2027 — will prohibit ornamental grass in commercial and common areas, and SNWA's Water Smart Landscapes rebate program currently pays per square foot for turf removed from residential properties. Eliminating Bermudagrass from a Boulder City front yard and replacing it with approved desert plant material is one of the fastest ways to permanently reduce your water bill and eliminate the stress of tracking watering day schedules.

Questions residents are asking

What watering group is my Boulder City address assigned to?

Your group (A through F) is assigned based on your street address and determines which days of the week you are allowed to irrigate. You can find your group by contacting Boulder City Public Works directly at 702-293-9219 or through the water conservation page at bcnv.org/216/Water-Conservation. Have your street address ready — group assignments are property-specific.

Can I water every day during summer in Boulder City?

During the summer season, all watering groups are permitted to irrigate Monday through Saturday — but Sunday remains off-limits year-round, and the midday blackout (no watering between 11:00 a.m. and 7:00 p.m.) is strictly enforced from May through August. Daily watering during summer is allowed under the schedule, but it is not recommended agronomically; deep, less-frequent cycles produce healthier desert-adapted turf and native plant roots.

How does Boulder City enforce the watering schedule — do they use smart meters?

Boulder City Public Works uses a combination of field staff patrols, SNWA regional meter data analysis, and resident complaints to identify violations. Meter data can flag accounts with usage occurring during prohibited midday hours or on non-assigned days. Complaints from neighbors are taken seriously and typically result in a site visit within a few business days. Violations are documented and result in a water waste fee on your utility bill.

Is there a rebate for removing my lawn in Boulder City?

Yes. Through SNWA's Water Smart Landscapes rebate program, Boulder City residents qualify for a per-square-foot payment for removing living turfgrass and replacing it with desert-appropriate landscaping. The program requires pre-approval before removal, a site inspection after completion, and the use of approved low-water plant material or inorganic ground cover. Contact SNWA or visit the Water Smart Landscapes page on the SNWA website to start an application — Boulder City properties are fully eligible.

Can I water newly planted desert shrubs or trees on non-assigned days?

Drip irrigation systems are exempt from the day-of-week restrictions under Boulder City's schedule, meaning you can run a drip system on any day to establish newly planted desert willow, blue palo verde, or other xeriscape plants. Hand watering with a shut-off nozzle is also exempt from day restrictions. Overhead spray irrigation for new plantings is not exempt and must follow your group's assigned schedule.

What happens to my water service if I repeatedly violate the schedule?

After the initial water waste fee, repeated violations under Boulder City and SNWA's enforcement framework escalate in severity. Continued non-compliance can result in installation of a flow restrictor on your service line, which physically limits the rate at which water can be drawn from your meter. In persistent cases, service interruption is possible. Boulder City coordinates with SNWA on enforcement for accounts with documented repeat violations.

Does the nonfunctional turf ban affect my Boulder City home?

Nevada's nonfunctional turf ban, effective January 1, 2027, targets ornamental grass in commercial, institutional, and HOA common areas — not private residential front or back yards, at least under the current law. However, Boulder City's location in the Colorado River Basin and its dependence on Lake Mead make voluntary residential turf removal a high-impact conservation action. The Water Smart Landscapes rebate makes the economics of conversion favorable right now, before any potential expansion of the ban.

Can I wash my car at home in Boulder City under current restrictions?

Yes, residential car washing is permitted as long as you use a hand-held hose with a positive-shutoff nozzle that stops water flow when you release the handle. Leaving a hose running unattended while washing a vehicle — or using a running hose without a shutoff to rinse a driveway afterward — is classified as water waste and is subject to a fee. Commercial car washes that recycle water are a compliant alternative year-round.

What days can I water my lawn in Boulder City?

Group A: Mon, Wed, Fri (spring/fall)/Mon–Sat (summer)/Monday only (winter); Group B: Tue, Thu, Sat (spring/fall)/Mon–Sat (summer)/Tuesday only (winter); Group C: Mon, Wed, Fri (spring/fall)/Mon–Sat (summer)/Wednesday only (winter); Group D: Tue, Thu, Sat (spring/fall)/Mon–Sat (summer)/Thursday only (winter); Group E: Mon, Wed, Fri (spring/fall)/Mon–Sat (summer)/Friday only (winter); Group F: Tue, Thu, Sat (spring/fall)/Mon–Sat (summer)/Saturday only (winter) Hand watering with a shut-off nozzle is typically allowed any day during permitted hours.

What time can I water in Boulder City?

Watering is allowed No watering 11:00 a.m. – 7:00 p.m. (May–Aug) and Anytime outside that window. Watering outside these hours is a violation even on your assigned day.

What are the fines for watering violations in Boulder City?

First offense: Water waste fee. Repeat violations: Same SNWA enforcement.. Contact Local for the full enforcement schedule.

When will water restrictions end in Boulder City?

Current Year-Round Mandatory Seasonal Schedule restrictions are in effect through Permanent. Monitor https://www.bcnv.org/216/Water-Conservation for the latest status.

How do I report a water waste violation in Boulder City?

Contact Local at 702-293-9219 or visit https://www.bcnv.org/216/Water-Conservation. Most utilities accept online reports and respond within 48 hours.