Tulsa OK Water Restrictions 2026

Current water restrictions in Tulsa, Oklahoma

Tulsa is under a Permanent Seasonal Odd/Even Ordinance, limiting outdoor watering to 2 days per week under rules enforced year-round by City of Tulsa Utilities.

This is not a temporary drought emergency — Tulsa's odd/even watering schedule is a permanent municipal ordinance, not a response to a single season. That said, current conditions add urgency: Tulsa's three primary reservoirs — Lake Spavinaw, Eucha Lake, and Oologah Lake — are sitting at a combined 72% storage capacity, and Tulsa County is classified under D1 Moderate Drought on the U.S. Drought Monitor. The ordinance was established to manage long-term demand on these surface water supplies, not simply react to short-term shortfalls.

At the state level, Oklahoma is under general drought monitoring, with western Oklahoma experiencing conditions that warrant attention, though no mandatory statewide restrictions are currently in effect. Tulsa's local rules are stricter than the state baseline and apply independently of what's happening in Oklahoma City or the Panhandle.

Practically speaking: if you have an odd-numbered address and want to water your garden, you may do so on Tuesday or Saturday, but only before 11:00 AM or after 5:00 PM. The midday blackout window — 11:00 AM to 5:00 PM — applies every day, regardless of your assigned watering days. A resident at an even-numbered address cannot legally run their sprinkler on Wednesday at 1:00 PM, even though Wednesday is one of their allowed days. The blackout hours exist to reduce evaporation loss, which is significant during Tulsa's hot, humid summers when afternoon temperatures routinely exceed 90°F.

New sod installations have a documented grace period: City of Tulsa Utilities provides a 21-day establishment variance for newly laid sod, allowing more frequent watering while roots develop. Contact City of Tulsa Utilities at 918-591-4867 or visit cityoftulsa.org/water to register an establishment variance before you lay new sod.

Tulsa's watering days and hours

Your assigned watering days are determined by the last digit of your street address number. If your house number is odd (ending in 1, 3, 5, 7, or 9), your days are Tuesday and Saturday. If your house number is even (ending in 0, 2, 4, 6, or 8), your days are Wednesday and Sunday. Apartment complexes, condominiums, and other multi-unit properties typically fall under the address of the primary building entrance — if your complex has multiple entrances or a master irrigation controller, contact City of Tulsa Utilities directly at 918-591-4867 to confirm your assigned schedule.

Commercial properties in Tulsa follow the same odd/even framework as residential accounts. Large commercial irrigation systems with multiple zones may not complete a full cycle within a single allowed morning or evening window — City of Tulsa Utilities recommends scheduling controllers to begin no later than 3:00 AM to ensure all zones complete before the 11:00 AM cutoff. Properties with reclaimed or gray water systems for irrigation should confirm their exemption status directly with the utility.

When allocating your two watering days, Tulsa's established trees deserve priority over turfgrass. Eastern redcedar (Juniperus virginiana), common throughout Tulsa's residential neighborhoods, tolerates dry spells once established but benefits from deep watering at the drip line during drought periods. Bur oak (Quercus macrocarpa), widely planted across Tulsa's older neighborhoods, develops deep root systems but can suffer during extended D1 drought if not supplemented. Southern magnolia (Magnolia grandiflora), increasingly common in newer Tulsa developments, is less drought-tolerant than the oaks and should receive watering priority when reservation levels are below 80%.

Violation fines and enforcement

City of Tulsa Utilities enforces the odd/even ordinance through a combination of field patrols, neighbor complaints, and automated meter data review. Tulsa has deployed smart meters across much of its service area, which give the utility visibility into high-consumption patterns that can flag potential irrigation violations — particularly when usage spikes occur during the 11:00 AM to 5:00 PM blackout window. Complaint-driven enforcement is common; residents can report suspected violations through the City of Tulsa's online service portal or by calling 918-591-4867. Response times for complaint investigations are typically within a few business days during active monitoring periods.

If you receive a citation and believe it was issued in error — for example, if your drip irrigation system was running during a blackout window (drip is exempt) or if you were watering newly registered sod under a variance — you can contest the citation by contacting City of Tulsa Utilities directly. Document your variance registration number, irrigation system type, or timer logs before making contact. There is no formal administrative appeals board specifically for irrigation citations; disputes are resolved at the utility level, with escalation to the City of Tulsa's customer service division if unresolved.

Other outdoor water rules

Beyond lawn irrigation, City of Tulsa Utilities applies additional outdoor water use guidelines. The following summarizes what is and isn't permitted under current conditions:

• Car washing at home: Permitted, but a shut-off nozzle on the hose is required. Using an open-running hose without a nozzle is prohibited. Commercial car washes that recycle water are preferred.
• Pressure washing: Permitted for safety and maintenance purposes (removing mold, preparing surfaces for painting), but not for routine cosmetic cleaning during D1 drought conditions.
• Swimming pool filling and top-off: Permitted, but pools must be covered with an evaporation cover when not in use. Tulsa's summer heat drives significant pool evaporation losses — an uncovered pool can lose 1–2 inches of water per week in July.
• Decorative fountains and water features: Should be equipped with recirculating pumps. Single-pass systems that discharge to drains are discouraged under D1 conditions.
• Drip irrigation for vegetable gardens and flower beds: Exempt from odd/even scheduling and the blackout window — drip systems are encouraged as a conservation measure.
• Hand watering with a shut-off nozzle: Exempt from day and time restrictions.
• Construction water use: Regulated separately under commercial permit conditions; contact City of Tulsa Utilities for project-specific requirements.

How Tulsa gets its water

Tulsa draws its municipal water supply entirely from three surface water reservoirs in northeastern Oklahoma, making reservoir storage levels a direct indicator of the city's water security. Those three sources are Lake Spavinaw, Eucha Lake, and Oologah Lake.

Lake Spavinaw, located in Mayes County approximately 65 miles northeast of Tulsa, was the city's original municipal water source, first developed in the 1920s. It remains a core supply and is fed by the Spavinaw Creek watershed. Eucha Lake, also in Mayes County and adjacent to Spavinaw, is managed in tandem with Spavinaw as a paired supply system. Together, these two lakes are connected by infrastructure that allows water to be transferred between them depending on storage levels.

Oologah Lake is a U.S. Army Corps of Engineers reservoir on the Verdigris River in Rogers County, roughly 25 miles northeast of downtown Tulsa. It is the largest of Tulsa's three sources by storage capacity and serves as a critical supplemental supply during dry periods. Water from Oologah is treated at the A.B. Jewell Water Treatment Plant, Tulsa's primary treatment facility, located along the Arkansas River. The Jewell plant and the companion A.M. Helmerich Water Treatment Plant together process Tulsa's surface water through conventional coagulation, sedimentation, filtration, and disinfection before distribution.

As of current reporting, the combined storage across all three reservoirs stands at 72%, which is below the seasonal average for this time of year and consistent with the D1 Moderate Drought designation for Tulsa County. Tulsa does not draw from groundwater aquifers for municipal supply — the city is entirely dependent on these three surface water lakes. That dependency is precisely why reservoir storage percentages drive the city's water management decisions and why the permanent odd/even ordinance exists as a structural demand-management tool.

HOA and brown lawn protections

Oklahoma does not have a specific statute equivalent to Colorado's CRS § 37-60-126 or Texas's Property Code § 202.007 that explicitly prohibits HOAs from fining homeowners for brown lawns caused by mandatory water restrictions. However, Oklahoma's general HOA governance framework under the Oklahoma Statutes Title 60 (property law) and common-law principles of reasonableness provide some practical protection: an HOA rule that effectively requires a homeowner to violate a City of Tulsa municipal ordinance to maintain a green lawn is likely unenforceable as contrary to public law. No Oklahoma court has specifically ruled on this intersection, so homeowners facing HOA pressure should document their compliance with City of Tulsa Utilities' odd/even ordinance in writing.

If your HOA issues a notice or fine related to lawn appearance during a period when you are complying with the City of Tulsa Permanent Seasonal Odd/Even Ordinance, send a written response to your HOA board. Keep a copy of your City of Tulsa utility account records showing your address assignment and any establishment variances on file.

You may adapt this template for your situation:

"This letter is to inform the [HOA Name] board that the condition of my lawn is a direct result of compliance with the City of Tulsa Utilities Permanent Seasonal Odd/Even Ordinance, which limits outdoor irrigation to two days per week and prohibits watering between 11:00 AM and 5:00 PM. Increasing irrigation beyond what the ordinance permits would subject me to citations from City of Tulsa Utilities, including a $100 first-offense fine. I respectfully request that any HOA enforcement action related to lawn appearance during this period be suspended. I am happy to provide documentation of my compliance upon request. Please contact City of Tulsa Utilities at 918-591-4867 or cityoftulsa.org/water for ordinance details."

Keeping your lawn alive on restricted water

Tulsa sits firmly in the transition zone — the climatic band where neither purely warm-season nor cool-season grasses thrive unconditionally. The most common turfgrasses in Tulsa are Tall Fescue, Bermudagrass, and Zoysia, with Bermuda dominating full-sun residential lawns and Tall Fescue holding on in shaded or north-facing yards.

Tulsa's summer climate is characterized by high humidity, extended periods above 90°F, and occasional weeks without measurable rainfall — a combination that stresses Tall Fescue more than any other common lawn grass in the city. If your Tall Fescue is browning during D1 drought conditions while you follow the two-day schedule, raise your mower deck to 3.5 to 4 inches. Taller grass shades the soil, reduces surface temperature, and slows evaporation between your Tuesday/Saturday or Wednesday/Sunday watering days. Avoid fertilizing Tall Fescue between June and August — nitrogen applications during heat stress accelerate decline.

Bermudagrass and Zoysia lawns in Tulsa are well-adapted to the two-day restriction schedule when watered deeply rather than shallowly. Run irrigation zones long enough to deliver 0.5 to 0.75 inches per session — check with a shallow tuna can placed in the spray zone to measure output. Deep, infrequent watering trains roots downward, increasing drought resilience between your watering days. For homeowners considering turf conversion, City of Tulsa Utilities periodically promotes water-wise landscaping with native plants — contact the utility for current rebate availability on irrigation upgrades such as soil moisture sensors and weather-based smart controllers.

Tulsa water restriction FAQ

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

If your street address ends in an odd digit (1, 3, 5, 7, or 9), you are permitted to run outdoor irrigation on Tuesday and Saturday only, and only before 11:00 AM or after 5:00 PM on those days. Watering on any other day — or during the 11:00 AM to 5:00 PM blackout window — is a violation subject to a $100 citation from City of Tulsa Utilities.

Can I water every day if I use a hand-held hose with a shut-off nozzle?

Yes. Hand watering with a hose equipped with a spring-loaded or trigger shut-off nozzle is exempt from the odd/even day restrictions and the blackout window under Tulsa's permanent ordinance. The nozzle requirement is firm — an open-ended hose left running is not exempt. Drip irrigation systems are also fully exempt from day and time restrictions.

My Tulsa reservoirs are at 72% — is that a crisis level?

72% combined storage across Lake Spavinaw, Eucha Lake, and Oologah Lake is below seasonal norms and consistent with Tulsa County's D1 Moderate Drought classification, but it is not an emergency trigger for Stage 2 or higher restrictions. City of Tulsa Utilities monitors reservoir levels continuously; if combined storage drops significantly further or drought conditions worsen to D2 or D3, additional mandatory restrictions beyond the permanent ordinance could be activated. For current reservoir status, check cityoftulsa.org/water or call 918-591-4867.

I just installed new sod — do I still have to follow the two-day schedule?

No, not immediately. City of Tulsa Utilities offers a 21-day establishment variance for newly laid sod, allowing more frequent watering while the root system develops. You must register the variance with City of Tulsa Utilities before or immediately after installation — don't assume it applies automatically. Call 918-591-4867 to register. After 21 days, your irrigation returns to the standard odd/even schedule for your address.

Does City of Tulsa Utilities use smart meters to catch irrigation violations?

Yes, in part. Tulsa has been expanding its smart meter network, which gives City of Tulsa Utilities the ability to see consumption data at intervals fine enough to identify usage patterns during the prohibited 11:00 AM to 5:00 PM window. While enforcement is not fully automated, unusual daytime consumption spikes on accounts that should not be irrigating can flag accounts for follow-up. Neighbor complaints remain the most common enforcement trigger, and Tulsans can report suspected violations through the City's online portal or by phone.

Can I fill or top off my swimming pool in Tulsa right now?

Yes, pool filling is permitted under Tulsa's current Permanent Seasonal Odd/Even Ordinance. However, City of Tulsa Utilities encourages pool owners to use an evaporation cover when the pool is not in active use. Tulsa's July and August heat can cause an uncovered pool to lose 1.5 to 2 inches of water per week to evaporation — equivalent to several hundred gallons on a standard residential pool — placing unnecessary demand on reservoir storage at exactly the time of year when supplies are most constrained.

Does the odd/even schedule apply to my vegetable garden drip system?

No. Drip irrigation is explicitly exempt from Tulsa's odd/even day restrictions and from the 11:00 AM to 5:00 PM blackout window. You may run a properly installed drip system on your vegetable garden or flower beds any day, at any hour. This exemption exists because drip systems deliver water directly to the root zone with minimal evaporation loss — exactly the efficient use City of Tulsa Utilities wants to encourage during D1 drought conditions.

Are there rebates available from City of Tulsa Utilities for water-saving irrigation upgrades?

City of Tulsa Utilities has periodically offered rebates and incentives for water-efficient irrigation equipment, including weather-based smart irrigation controllers and soil moisture sensors that prevent watering after rainfall. Availability and amounts change seasonally. Contact City of Tulsa Utilities directly at 918-591-4867 or visit cityoftulsa.org/water to ask about current conservation programs before purchasing equipment — some programs require pre-approval to qualify for reimbursement.

What time can I water in Tulsa?

Watering is allowed Before 11:00 AM and After 5:00 PM. Watering outside these hours is a violation even on your assigned day.

What are the fines for watering violations in Tulsa?

First offense: $100 first offense. Repeat violations: City of Tulsa Utilities issues $100 first-offense citations.. Contact City of Tulsa Utilities for the full enforcement schedule.

When will water restrictions end in Tulsa?

Current Permanent Seasonal Odd/Even Ordinance restrictions are in effect through Permanent ordinance. Monitor https://www.cityoftulsa.org/water for the latest status.