Nampa Water Restrictions 2026
Canyon County · Idaho
Published:
Restrictions Active - Stage 1 Water Conservation
2
Days/Week
Before 10:00 AM
Allowed Hours
$75 first offense
Max Fine
Find Your Watering Day
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| Address Ending | Watering Day |
|---|---|
| Odd | Tuesday & Friday |
| Even | Wednesday & Saturday |
Allowed Watering Hours
No outdoor irrigation between 10:00 AM and 5:00 PM. Stage 1 limits irrigation to 2 days/week (baseline is 3). No irrigation Monday, Thursday, or Sunday under Stage 1.
Still Allowed
💧 Hand Watering
Allowed with shut-off nozzle. Hours: Any day with a shut-off nozzle.
🌿 Drip Irrigation
Exempt from day-of-week limits. Must follow allowed hours.
Fines & Enforcement
$75 first offense
Nampa Development Services issues warning letters on first detection. Second offense within 12 months: $75. Third+: $150. Commercial properties face up to $500. Nampa uses neighborhood patrol during Stage 1 summer season.
Citations begin April 2026🏠 HOA Rules During Restrictions
Idaho Code §55-2104 prohibits HOAs from enforcing lawn appearance standards that would require homeowners to violate municipal water restrictions.
If your homeowners association sends a violation notice for a dormant or brown lawn during the current restriction period, respond in writing citing the applicable law and include a copy of the City of Nampa Development Services Department's current restriction order. Most HOAs will rescind the notice once they are made aware of the legal protections in place. If the issue persists, contact your county’s code enforcement division for assistance.
Why These Restrictions Exist
Nampa sources water from Snake River Basin groundwater wells. The Snake River Aquifer has faced chronic over-appropriation from agricultural junior water rights curtailments. Nampa's population growth (42% since 2010) has added new demand on infrastructure designed for a smaller city. Stage 1 was activated in April 2026 alongside neighboring Boise's Stage 2.
This deficit has accumulated over the current water year and represents a significant departure from historical averages for the Nampa area. Water supply reservoirs and aquifer levels are well below seasonal targets, necessitating mandatory conservation measures.
How to Keep Your Lawn Alive During Nampa Water Restrictions
11 tips tailored for Nampa homeowners during Stage 1 Water Conservation restrictions.
Canyon County's Kentucky Bluegrass and tall fescue handle 2 days/week in Nampa's climate, water deeply each scheduled cycle.
Mow to 3.5 inches in summer and leave clippings.
Use a smart controller with Idaho ET preset; Nampa rebates cover $50 on WaterSense units.
Replace parkway strips with Idaho natives or low-water turf alternatives like Buffalo Grass blends.
Drip-irrigate vegetable beds and fruit trees, exempt from Stage 1 schedule.
Fix leaks within 48 hours, Canyon County evaporation rates are high June–September.
Convert overhead spray to rotary nozzles, saves 30% on typical front lawns.
Skip scheduled cycles after any 0.25"+ rainfall event.
Group by hydrozone, trees separate from turf simplifies Stage 1 compliance.
Harvest rainwater, Idaho allows unlimited residential rooftop harvesting.
Track use at cityofnampa.us 'My Account', Stage 1 targets 15% reduction versus prior August.
Nampa Water Restriction FAQs
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