Kent County Water Authority Watering Restrictions (2026): Odd and Even Days, Drought Fines, and Lawn Care

Every summer across central Rhode Island, thousands of homeowners in Warwick, Coventry, West Warwick, and East Greenwich open their utility mail or see electronic roadside signs warning of mandatory outdoor water restrictions.

The Kent County Water Authority (KCWA) manages the public water supply for over 100,000 Rhode Islanders. Because peak summer water usage can more than double average winter daily demand—primarily driven by lawn irrigation systems and swimming pool fillings—KCWA enforces strict outdoor conservation rules.

Failing to comply can result in warnings, administrative surcharges, and flow-restricting devices installed on your service meter.

Here is an objective breakdown of how KCWA watering rules work in 2026, when your house is permitted to run sprinklers, and how to keep your lawn thriving on an alternating watering schedule.

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1. The Odd and Even Rule: How It Works

KCWA enforces a continuous, year-round Odd/Even Outdoor Water Use Policy. The schedule is determined by the last digit of your house number:

• Odd-Numbered Addresses (e.g., 105, 317, 821 Oak St): You are permitted outdoor water usage only on odd-numbered calendar days (the 1st, 3rd, 5th, 7th, 9th, 11th, etc.).
• Even-Numbered Addresses (e.g., 102, 314, 820 Oak St): You are permitted outdoor water usage only on even-numbered calendar days (the 2nd, 4th, 6th, 8th, 10th, etc.).

What Outdoor Uses Are Covered?

The restriction applies to all non-essential outdoor culinary water use:

• Built-in automated underground sprinkler zones
• Portable oscillate sprinklers attached to garden hoses
• Washing personal cars, trucks, RVs, and boats on driveways
• Filling or topping off above-ground and in-ground swimming pools
• Power-washing paved sidewalks, decks, and asphalt driveways

Note: Hand-watering vegetable gardens with a handheld hose equipped with an automatic shut-off nozzle is generally permitted during non-peak hours.

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2. Why Midday Watering Wastes Your Water Bill

Even on your assigned odd or even day, running your lawn sprinklers between 9:00 AM and 5:00 PM is the most expensive mistake a homeowner can make.

During Rhode Island summer days with temperatures in the 80s and 90s, the sun and wind cause rapid evaporation. Agronomy field trials reveal that 30% to 45% of sprinkler water evaporates into the atmosphere before it ever sinks two inches into the soil.

Furthermore, water droplets resting on grass blades under direct midday sun can magnify solar heat, scalping vulnerable cool-season grass tips.

Optimal Watering Window: 4:30 AM to 7:00 AM

Set your irrigation timer to run just before daybreak:

• Water pressures in the municipal KCWA main are highest and most stable.
• Evaporation loss drops below 5%.
• Turf blades dry off quickly once the morning sun rises, preventing lawn fungus (such as brown patch and dollar spot).

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3. How to Keep Your Lawn Green on an Every-Other-Day Schedule

Many homeowners panic when restrictions are announced, believing their grass will turn brown if they cannot water every morning.

In reality, daily shallow watering is terrible for Rhode Island lawns. It produces weak, shallow roots that hug the top inch of soil. When a heat wave hits, those shallow roots bake immediately.

An alternating-day schedule actually builds a healthier, more drought-resilient lawn:

1. Water Deeply, Not Frequently: Instead of 10 minutes every day, program your zones to run for 25 to 35 minutes on your permitted day (delivering roughly 0.5 inches of water per cycle). This forces water 6 to 8 inches into the ground, encouraging roots to dive deep.
2. Raise Your Mower Deck to 3.5 – 4.0 Inches: This is the single most effective drought defense. Longer grass blades cast cooling shade over the soil, reducing soil moisture loss by up to 30%.
3. Leave the Clippings (Mulch Mowing): Make sure your lawn crew uses mulching blades. Finely chopped grass clippings act as a natural organic blanket that shades topsoil and returns moisture.
4. Skip Nitrogen Fertilizer in July: Never apply high-nitrogen chemical fertilizer during dry mid-summer spells. Nitrogen forces rapid green leaf growth when the root system is struggling to conserve moisture, leading to severe lawn burnout.

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4. What Happens During a Declared Drought?

When rainfall levels drop significantly and reservoir storage falls below baseline thresholds, the KCWA Board can escalate restrictions through its Drought Management Policy:

• Stage 1 (Advisory / Standard): Mandatory Odd/Even schedule; voluntary reduction of vehicle washing.
• Stage 2 (Water Alert): Mandatory Odd/Even schedule with restricted evening hours (watering only permitted 5:00 AM to 8:00 AM and 6:00 PM to 9:00 PM).
• Stage 3 (Water Emergency): Complete ban on all outdoor lawn sprinklers, vehicle washing, and pool fillings. Turf is allowed to enter summer dormancy.

Summer Lawn Dormancy: Brown Does Not Mean Dead

If a Stage 3 emergency ban occurs, cool-season grasses (Kentucky bluegrass, fescues) have a built-in survival mechanism: summer dormancy. The grass blades turn golden-brown and cease growing, but the root crown remains alive underground.

Healthy New England lawns can survive 4 to 6 weeks in dormancy and will green up within seven to ten days once natural rainfall returns in September.

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5. Contacting Kent County Water Authority

If you have questions regarding your address classification, meter alerts, or current drought stage status, contact KCWA directly:

• Customer Service: (401) 821-9300
• Hours: Monday through Friday, 8:00 AM to 4:00 PM
• Headquarters: 1072 Main Street, West Warwick, RI 02893
• Website: kentcountywater.org

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