Lewisville’s 2025 Water Restrictions

Lewisville, TX enters its hottest stretch each year from May through September. That’s when daily water demand spikes, irrigation losses climb, and the city’s system runs closer to capacity. To keep service reliable and protect a shared resource, Lewisville enforces seasonal outdoor watering restrictions as part of its Emergency Water Management Plan—supported by year‑round rules that promote smart irrigation. This post explains the 2025 watering schedule, daytime restrictions, practical conservation tips, and how these measures connect to the Lewisville 2025 Vision Plan. You’ll also find a simple checklist to get your system in compliance and a call‑to‑action to tap rebates for water‑efficient upgrades.

What you’ll learn:

Your assigned watering days based on address type
What’s allowed (and not) between 10 a.m. and 6 p.m.
Easy ways to cut outdoor water use without sacrificing a healthy landscape
Why these rules matter for system reliability and sustainability
How to report issues, request variances, and claim rebates

The Watering Schedule: Know Your Days

Lewisville uses a rotating schedule to spread irrigation demand and reduce peak loads on the system. It’s simple:

Even-numbered residential addresses: Tuesday and Saturday
Odd-numbered residential addresses: Wednesday and Sunday
Commercial, multifamily, and HOA properties: Monday and Thursday

A quick way to remember it for homes: even numbers water on even-ish days (Tuesday/Saturday), odd numbers on odd-ish days (Wednesday/Sunday). If you manage a commercial site or an HOA, stick to Monday and Thursday.

Tip: Program your controller with these exact days and disable all other watering programs. If your system has seasonal adjust or “water budget” features, set them to match current conditions and the city’s restrictions.

Daytime Restrictions: 10 a.m. to 6 p.m.

From May 1 through September 30, automated and manual sprinklers (including hose-end sprinklers) are not allowed between 10 a.m. and 6 p.m. Those hours coincide with the highest temperatures and wind, when evaporation can waste 20–30% or more of applied water.

What’s allowed:

Hand-watering with a hose (with a shut-off nozzle)
Soaker hoses
Drip irrigation for trees and beds (best practice is to run drip outside the 10 a.m.–6 p.m. window as well, to reduce evaporation even further)

Hand-watering and soaker hoses remain unrestricted because they deliver water precisely where plants need it and reduce waste.

Year-Round Rules That Still Apply

Lewisville maintains year‑round conservation rules to keep landscapes healthy and water use efficient:

Limit lawn and landscape irrigation to two days per week on your assigned days.
Avoid watering during the hottest part of the day (even outside summer months).
Prevent water waste (e.g., runoff onto streets, broken sprinkler heads, overspray onto pavement).

These baseline practices help the city avoid emergency conditions and reduce the need for stricter measures later.

Why These Measures Matter

Outdoor irrigation can account for 30–50% of household water use in North Texas—more during heat waves. Midday watering can lose a significant portion of water to evaporation and wind drift, which means more pumping, higher peak demand, and less water reaching plant roots. By shifting irrigation to cooler hours and aligning watering days, the city:

Lowers peak demand on pipes, pumps, and storage
Preserves capacity for fire protection and public health needs
Reduces the risk of pressure drops and boil water notices
Helps residents maintain healthy landscapes with less water

Research backs this up. Mandatory outdoor watering schedules and time-of-day limits have been shown to cut citywide water consumption by double digits during peak season. When residents follow the rules, the system stays resilient and costs stay lower over time.

The Sustainability Connection: Lewisville 2025 Vision Plan

Active water conservation is a key recommendation of the Lewisville 2025 Vision Plan’s “Sustainability” Big Move. The goal: support a thriving city that uses resources wisely and keeps infrastructure reliable. Water‑wise landscaping, smart irrigation, and peak-demand management help the city:

Stretch supplies in drought-prone years
Align with regional partners (e.g., Dallas Water Utilities) on consistent conservation practices
Delay or reduce costly infrastructure expansions
Improve environmental outcomes by reducing runoff and overwatering

Put simply, small changes at home add up to big system benefits.

How to Stay Compliant: A 10-Minute Checklist

Use this quick guide to make sure your home or property is set for summer:

Confirm your days:
- Even addresses: Tue/Sat
- Odd addresses: Wed/Sun
- Commercial/HOA: Mon/Thu
Update your controller:
- Program only your allowed days
- Disable overlapping programs
- Set seasonal adjust/water budget to match current weather
Lock out the no‑water window:
- Ensure no watering is scheduled between 10 a.m. and 6 p.m.
- Consider early morning start times (e.g., 4–6 a.m.)
Fix leaks and clogs:
- Run each zone briefly and inspect for broken heads, geysers, or misting
- Replace worn nozzles and cracked risers
Stop overspray:
- Aim heads for head‑to‑head coverage
- Keep water off driveways, sidewalks, and streets
Switch to drip for beds:
- Drip irrigates roots directly, reduces evaporation, and improves plant health
Consider a smart controller:
- Weather‑based controllers adjust schedules automatically
- Look for WaterSense labeled models (often eligible for rebates)
Raise mower blades:
- Taller grass shades soil, reduces evaporation, and builds deeper roots
Aerate compacted soil:
- Aeration boosts infiltration and helps water reach roots
Mulch beds 2–3 inches deep:
- Mulch holds moisture, moderates soil temperature, and cuts weed pressure

Water-Saving Tips That Keep Lawns Healthy

You don’t need more water—you need better watering.

Water deeply, not daily: For most turf, 1 inch per week (including rainfall) is plenty. Deep, infrequent watering builds resilient root systems.
Use the tuna can test: Place a straight-sided can in your yard and run the system to see how long it takes to collect 1/2 inch. That tells you run time per cycle.
Cycle and soak: Break long run times into two or three shorter cycles with 30–60 minutes between. This prevents runoff and improves absorption.
Match heads and pressure: High pressure creates fine mist (waste). Install pressure‑regulating heads or valves to reduce misting and drift.
Prioritize trees: Trees add shade and reduce heat island effects. Use slow, deep watering at the drip line (or drip emitters) to keep them healthy.
Convert narrow strips: Replace hard‑to‑water turf strips with native plants or drip‑irrigated beds to cut waste.

Variances and Special Situations

The city provides reasonable variances for:

Properties with non‑city water sources (e.g., private wells, approved recycled detention systems)
Very large landscapes that cannot be watered within allowed days (zonal scheduling still limited to two irrigations per week per zone)
New sod or landscaping (temporary, time‑limited increases to establish plants)

If you think you qualify, email the city’s water conservation contact with a description of your situation and what you need. There’s no fee to apply, and approvals focus on practical, time‑bound accommodations.

Reporting Issues and Getting Help

Report suspected watering violations: Use the OurLewisvilleTX app or call 972.219.3510.
Rebates and conservation programs: Visit the City of Lewisville Water Conservation page for details on available incentives and smart irrigation tips.

By working together and making small changes in our watering routines, we can make a significant impact on preserving Lewisville’s water resources. Explore the city’s conservation programs, take advantage of rebates, and share these guidelines with neighbors and friends. Every action adds up—let’s do our part to keep our community sustainable for years to come.