Olathe Water Restrictions 2026
Johnson County · Kansas
Published:
Restrictions Active - Stage 1 Advisory – Split-Utility (City Water + WaterOne)
3
Days/Week
Before 10:00 AM
Allowed Hours
No fines at Stage 1 Advisory
Max Fine
Find Your Watering Day
Enter the last digit of your street address:
View full address schedule table
| Address Ending | Watering Day |
|---|---|
| Odd (voluntary) | Monday & Wednesday & Friday |
| Even (voluntary) | Tuesday & Thursday & Saturday |
Allowed Watering Hours
Olathe operates a SPLIT-UTILITY service area: both the City of Olathe Water Department AND WaterOne (Johnson County district) serve addresses within Olathe city limits, with neither covering the entire city. Both utilities currently run voluntary Stage 1 advisory frameworks with the same recommended odd/even schedule and 10:00 AM to 6:00 PM mid-day blackout. Check the top of your water bill to determine which utility serves your specific address – City of Olathe Water Department bills are headed differently from WaterOne bills.
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
No fines at Stage 1 Advisory
Stage 1 Conservation Advisory is voluntary under both Olathe utilities – there are no per-violation fines at the current advisory level. Mandatory enforcement would activate only if either the City of Olathe Water Department or WaterOne declares Stage 2 independently.
Citations begin Statewide drought conditions active🏠 HOA Rules During Restrictions
Kansas state law does not include a statutory xeriscape right, but the Olathe Stage 1 advisory plus any future mandatory stage are 'applicable' under Kansas common law for HOA-supremacy purposes. Document whichever utility's advisory applies to your address if your HOA sends a violation letter.
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 current restriction order from City of Olathe Water Department + WaterOne. 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
Olathe is one of the few Johnson County cities with a true SPLIT-UTILITY service area: both the City of Olathe Water Department AND WaterOne (Water District No. 1 of Johnson County) serve addresses within Olathe city limits, with neither covering the entire city. Your specific address is served by one or the other – check the top of your water bill to confirm which utility serves you (the bills are headed differently).
City of Olathe Water Department source: alluvial wells along the Kansas River east of De Soto, Kansas – 8 vertical wells and 4 horizontal collector wells drawing from the Kansas River alluvial aquifer. The city operates its own treatment plant and distribution system on this groundwater source. WaterOne source (for the share of Olathe addresses on WaterOne): the Missouri River intake at Wolcott near Bonner Springs blended with Kansas River supplemental supply.
Note: Some prior summaries of Olathe water list Hillsdale Lake as a city source – that is INCORRECT for Olathe specifically. Hillsdale Lake (in Miami County) serves Gardner, Edgerton, and Spring Hill (other Johnson County cities), not Olathe. Indian Creek in Olathe is a wastewater discharge stream, not a drinking-water source.
Statewide context: Western Kansas has been under Drought Declaration Level 2 since September 2025 (Governor-issued, 42 counties – Johnson County is NOT among them). The Ogallala Aquifer in western Kansas has declined 50+ feet since the 1950s. Olathe's Kansas River alluvial and Missouri River sources are not directly affected by Ogallala depletion.
Local context: Olathe is the Johnson County seat and the 4th-largest city in Kansas. The K-State Olathe campus, Garmin International headquarters, and Olathe Public Schools are significant institutional water consumers on whichever utility serves their respective addresses.
This deficit has accumulated over the current water year and represents a significant departure from historical averages for the Olathe area. Water supply reservoirs and aquifer levels are well below seasonal targets, necessitating mandatory conservation measures.
How to Keep Your Lawn Alive During Olathe Water Restrictions
11 tips tailored for Olathe homeowners during Stage 1 Advisory – Split-Utility (City Water + WaterOne) restrictions.
Olathe is a SPLIT-UTILITY service area – check your water bill to determine whether you are on City of Olathe Water Department or WaterOne. Rules currently align between the two but applications, rebates, and enforcement differ.
City of Olathe Water Department draws from alluvial wells along the Kansas River east of De Soto (8 vertical + 4 horizontal collector wells) – this is groundwater drawn from the Kansas River alluvial aquifer, NOT from Hillsdale Lake or Indian Creek.
Kentucky Bluegrass and tall fescue dominate Olathe lawns; both handle voluntary 3-day-per-week schedules when watered deeply.
Cycle-and-soak on Johnson County's clay-loam soils: 8 minutes on, 30-minute pause, 8 minutes on – prevents runoff on clay.
Mulch ornamental beds 3 inches deep with arborist wood chips; bare soil in JoCo summer heat loses 0.5+ inches of moisture per day.
Drip-irrigate trees, shrubs, and vegetable beds – exempt from any current or future day-of-week limits under either utility.
Audit sprinkler heads monthly for overspray; even under voluntary advisory, visible waste matters for long-term aquifer drawdown.
Skip scheduled cycles after 0.25 inch or greater rainfall in the prior 48 hours; Kansas rain sensors are recommended on systems installed after 2010.
Convert parkway strips to Kansas natives (Buffalo Grass, Prairie Dropseed, Little Bluestem) – low-irrigation conversion targets.
Both utilities offer smart-controller rebates under separate application processes; check whichever utility serves your address.
Harvest rainwater off downspouts into rain barrels – Kansas law permits unlimited residential rooftop capture without permit.
Olathe Water Restriction FAQs
What days can I water my lawn in Olathe?
What hours can I run my sprinklers in Olathe?
What are the fines for water violations in Olathe?
Can I install new sod or seed in Olathe during restrictions?
When will water restrictions end in Olathe?
My Olathe address has a WaterOne bill, my neighbor has a City of Olathe bill – different rules?
Hillsdale Lake is in Miami County, not Johnson County – why is it my Olathe water source?
Garmin / K-State Olathe institutional accounts – same rules as residential?
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