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General Rebate Program Questions

What is Water Sensible?

Water Sensible is the Honolulu BWS’ water conservation program. It is made up of rebates and other programs to engage customers, businesses, organizations, and visitors in conserving our most precious resource.

Which rebates are currently available?

Residential Rebates

The BWS encourages residential customers to conserve water by offering the following rebates for the purchase of new eligible products:

  • EPA WaterSense® weather-based irrigation controller (WBIC): 50% of pre-tax purchase price, up to $100
  • Energy Star® clothes washer for a water-efficient model: $75
  • Residential rain barrel: $40

Commercial Rebates

The BWS encourages non-residential customers to conserve by offering a range of rebates for the purchase of new landscape, commercial kitchen, and plumbing products:

  • EPA WaterSense® weather-based irrigation controller (WBIC): $100
  • EPA WaterSense® Soil Moisture Sensor: up to $35
  • Commercial rain barrel/tote: $150
  • EPA WaterSense® fixed or handheld showerheads: up to $30
  • EPA WaterSense® swivel and faucet aerators: up to $10
  • EPA WaterSense® toilet: $150
  • EPA WaterSense® urinal: $50
  • Energy Star® Commercial clothes washer: $75
  • EPA WaterSense® Pre-rinse spray valve: up to $50
  • Water Efficient Dipper Well: $75
  • Energy Star® Commercial dishwasher: $250

Energy Star® Commercial Batch type ice machine: $100

How do I get a rebate?

• Purchase the eligible item.

• Submit the completed rebate form and supporting documentation (copy of itemized receipt or invoice and W-9 for rebates totaling $600 or more) in one of two ways:

• Online: Email the completed form and a scanned copy of the sales receipt to: watersensible@honeywell.com 

• By mail: Mail the completed form and copy of the sales receipt to:

Board of Water Supply 
Water Sensible Rebate Program
P.O. Box 1440
Honolulu HI 96806

How long do I have to submit my rebate application?

The rebate application must be turned in within 60 days of the date of purchase.

When will the rebates end?

Rebates for this program are available while funding lasts.

What does “while funding lasts” mean?

Rebates are available while annual funding lasts. If needed, the program may delay rebate payment near the end of year till annual funding is available. The Water Sensible Customer Care team will notify you in this case.

What are some reasons for declined rebate applications?

Applications may be declined for the following reasons:

  • Missing information on the rebate application
  • Missing copy of receipt or invoice
  • Receipt is not itemized
  • Missing or invalid BWS account number
  • Products are not eligible (ex. Product is not Energy Star® or EPA WaterSense®.)

The Water Sensible Customer Care team will reach out via email, mail, or phone to collect missing information.

Can I still qualify for the rebate if I lose my receipt or invoice?

Rebate applications must include copy of receipts or invoices to be processed. Original receipts or invoices will not be returned to the customer after processing.

Are there limits to how many rebates I can receive?

Yes, limits apply for each product but they can be waived on a case by case basis depending on funding availability. We encourage customers to send applications even if limits are surpassed.

How can I tell if my product is certified Energy Star®?

To qualify for the Board of Water Supply’s rebate, all clothes washers, commercial dishwashers, and commercial batch type ice machines MUST be ENERGY STAR® models to qualify for the rebate. Be sure to look for the ENERGY STAR® on the machine and/or paperwork before sending in your rebate application.

How can I tell if my product is certified EPA WaterSense®?

To qualify for the Board of Water Supply’s rebate, all WBICs, soil moisture sensors, showerheads, aerators, toilets, urinals, and pre-rinse spray valves  must be EPA WaterSense® labeled. Products that are not EPA WaterSense® labeled do not qualify for the BWS rebate. Be sure to look for the EPA WaterSense® logo on the product and/or paperwork before sending in your rebate application.

How long will it take before I receive my rebate?

You can expect payment within 6-8 weeks.  For faster processing, email submissions are recommended. Email completed applications and supporting documents to watersensible@honeywell.com.

I am not a Honolulu Board of Water Supply customer, do I still qualify for the rebate(s)?

Only Honolulu Board of Water Supply customers are eligible for rebates. Residential and commercial renters and HOA / AOAO residents can redeem rebates by providing BWS account number on Step 1 of the application, and listing their own name and contact info in Step 2 of the application.

Who can I contact if I have more questions about the rebates?

Residential Rebates

Why is the BWS offering residential rebates?

The BWS hopes that these rebates may motivate customers to take the extra step so they can further reduce their home water use, take control of their household costs, and conserve our precious water resources.

Who can qualify for a residential rebate?

To qualify for the residential rebate, the applicant must be:

  • A residential account holder with the Honolulu Board of Water Supply, or
  • A tenant of a multi-family account holder (apartment, residential condominium, or townhome) of the Honolulu Board of Water Supply.

Customers that don't directly pay their water bill and don't have a Board of Water Supply account, may still qualify for the rebates. If the water bill is paid through a different entity (i.e. AOAO, Condo, Rental Unit or military base) please contact them to identify the account number and include it in step 1 of the rebate application.

I live in an apartment building or AOAO, can I still get a rebate?

Yes, residents can apply for rebates with the property’s BWS account number. Ask your property manager or email watersensible@honeywell.com or call (808) 237-6877 for assistance with locating your BWS account number.

Where can I get products that qualify for the residential rebate?

Lists of local retail outlets that sell eligible residential products on island are available on the BWS's website at www.boardofwatersupply.com/rebates. Eligible products can also be purchased online through a wide variety of retailers.

How do I get a residential rebate?

  • Purchase the qualifying item.
  • Submit the completed rebate form and supporting documentation in one of two ways:
    • Hard copy: Mail the completed form and the sales receipt to:
      Board of Water Supply Water Sensible Rebate Program
      P.O. Box 1440
      Honolulu HI 96806
    • Online: Email the completed form and a scanned copy of the sales receipt to: watersensible@honeywell.com

How do I know if my purchase qualifies for a residential rebate?

Rebates are available for swapping out an existing regular clothes washer for a water-efficient model or for the purchase and installation of a residential rain barrel or WBIC (weather-based irrigation controller). As long as your purchase was made within 60 days of the purchase, you may qualify for a rebate.

What if I already bought a new efficient clothes washer earlier this year?

Your purchase of a new efficient clothes washer would be considered eligible if your rebate application is postmarked within 60 days of the purchase date. 

Customers that don't directly pay their water bill and don't have a Board of Water Supply account, may still qualify for the rebates. If the water bill is paid through a different entity (i.e. AOAO, Condo, Rental Unit or military base) please contact them to identify the account number and include it in step 1 of the rebate application. 

Do I have to have my old clothes washer hauled away?

The BWS rebate program does not include a haul away component for eligibility on the washer rebate.

What is a weather-based irrigation controller (WBIC)?

A weather-based irrigation controller (WBIC) uses current weather data to adjust and control the timing and duration of the irrigation system’s operation, whereas a standard irrigation controller is schedule based.  During cool, wet or windy weather, a weather-based irrigation controller reduces irrigation frequency and duration; during warm or dry weather, it increases the frequency and duration.

How does a weather-based irrigation controller work?

A weather-based irrigation controller uses local evapotranspiration (ET) real-time data to determine irrigation schedules. Simply put, ET is the water that evaporates from the ground surface and transpires from plant leaves. Factors such as wind, humidity, temperature, and sunlight affect ET numbers and plant irrigation needs. Using ET data, the weather-based irrigation controller will lengthen or shorten irrigation time as needed.  

How much water can a weather-based irrigation controller save me?

Weather-based irrigation controllers can save up to 7,600 gallons of water per year.

Can I install a weather-based irrigation controller myself or do I need a licensed professional to install it to qualify for the rebate?

Qualifying for the rebate is not dependent on having a licensed professional install the product. You can do the installation yourself by reading and completely following the manufacturer’s instructions. It is critical to correctly program the controller to achieve water savings. To get the best possible benefits from your weather based irrigation controller, installation by a licensed professional is recommended but not required.

What is the amount of the weather-based irrigation controller rebate?

The rebate for the purchase of an EPA WaterSense® labeled weather based irrigation controller is 50% of the cost of the controller, up to $100. 

Can I apply more than once for the weather-based irrigation controller (WBIC) rebate?

Customers are limited to one WBIC rebate per BWS account.

Commercial Rebate Program

Where can I get products that qualify for the commercial rebates?

Many of the products are available at local retail outlets listed on the BWS's website at www.boardofwatersupply.com/rebates. Eligible products can also be purchased online through a wide variety of retailers and directly through distributors for more specialized items. 

Which customers are eligible for commercial rebates?

Honolulu BWS Commercial, MFR (multi-family residential), Agriculture, and Irrigation-Only customers are eligible for commercial rebates.

Any non-residential customer with landscape, plumbing, and/or commercial kitchen needs would benefit from these rebates.

Is there a limit to how many commercial rebates I can get?

Rebate quantity limits:

  • EPA WaterSense® weather-based irrigation controller (WBIC): 5
  • EPA WaterSense® Soil Moisture Sensor: 10
  • Commercial rain barrel/tote: 2
  • EPA WaterSense® fixed or handheld showerheads: 10
  • EPA WaterSense® swivel and faucet aerators: 10
  • EPA WaterSense® toilet: 10
  • EPA WaterSense® urinal: 10
  • Energy Star® Commercial clothes washer: 10
  • EPA WaterSense® Pre-rinse spray valve: 5
  • Water Efficient Dipper Well: 5
  • Energy Star® Commercial dishwasher: 1
  • Energy Star® Commercial Batch type ice machine: 1

Limits can be waived by the program on a case-by-case basis.

Customers that receive $600 or more for rebates in a single year may be asked to submit IRS Form W-9 with their application for processing of the IRS form 1099. The Program may forward a copy of the IRS Form 1099 to the applicant at the end of the calendar year, should IRS Form 1099 apply.

Do I need to submit my W-9 with my rebate application?

If you receive $600 or more in rebates in a single year, we are required to comply and report this information to the IRS. You may receive an IRS Form 1099 showing tax eligible rebate/incentive.

I am a contractor, can I apply for rebates with products purchased for my customers?

Yes, contractors can apply for rebates as a payee if the customer’s BWS account number is provided on the rebate application. Rebate limits are applied per BWS account number.

Updated: 02/04/2022