Kauai Water Department, HI: Bill Pay, Phone, Hours, Address & Official Customer Help
Use this practical Kauaʻi Department of Water guide to pay your water bill online through the Koʻu Wai Customer Account Portal, understand mail and automatic bill payment options, contact billing, find the Līhuʻe office address and lobby hours, and report water emergencies during business hours, nights, weekends or holidays.
🔒 Official Kauaʻi Department of Water Resources
Before You Pay a Kauai Water Bill, Use the Official Department of Water Portal
Most users searching “Kauai Water Department bill pay” need the official online account portal, billing phone number, office address, lobby hours, Automatic Bill Payment details, service issue contact or after-hours water emergency number.
The official water utility is the Department of Water, County of Kauaʻi. The department provides water service and customer support for county water customers through its Līhuʻe office, billing staff, Customer Account Portal and emergency standby process.
For online payment, use the Koʻu Wai Customer Account Portal linked by the Department of Water. For billing-specific questions or Automatic Bill Payment help, call 808-245-5442 or email billing@kauaiwater.org.
Billing users
Pay online through the Customer Account Portal, by mail, or by setting up Automatic Bill Payment.
Walk-in users
The lobby is open Monday through Friday from 8:00 a.m. to 4:00 p.m., excluding holidays.
Emergency users
Call 808-245-5444 during business hours and 808-241-1711 on nights, weekends and holidays.
How to Pay Your Kauai Water Bill Online
The official online route is the Koʻu Wai Customer Account Portal. Use the primary account holder information exactly as shown on your water statement when registering.
1
Open the official payment page
Start from KauaiWater.org before entering account information.
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Open the official payment page here: Kauaʻi Department of Water – Pay Your Water Bill.
You can also go directly to the official portal here: Koʻu Wai Customer Account Portal.
2
Log in or register
Registration must match the bill holder details.
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If registering, enter the primary account holder’s first and last name or company name exactly as it appears on the water bill. This helps avoid account matching problems.
3
Review your account before payment
Make sure the account and service location are correct.
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Review the account name, account number, service address and amount due before submitting payment. If something does not look correct, contact billing before paying.
4
Save the confirmation
Important for payment proof and account follow-up.
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Save your receipt, confirmation number or screenshot. For billing questions, call 808-245-5442 or email billing@kauaiwater.org.
Kauai Water Bill Payment Options: Online Portal, Mail, Automatic Bill Payment, Lobby and Drop Box
Kauaʻi Department of Water directs customers to pay by mail, online through the Customer Account Portal or through Automatic Bill Payment. Walk-in and drop box options may also be useful depending on timing.
| Payment Method | Official Route | Best For | Practical Tip |
|---|---|---|---|
| Online Customer Account Portal | Koʻu Wai Portal | Online account access and water bill payment | Register with the account holder name exactly as shown on the statement. |
| Mail payment | Use the mailing instructions printed on your Department of Water bill | Non-urgent check payment | Do not mail if the account is already urgent or service-sensitive. |
| Automatic Bill Payment | Submit ABP form with voided blank check | Avoiding missed due dates | Call 808-245-5442 or email billing@kauaiwater.org to stop or cancel ABP. |
| Lobby payment / walk-in help | 4398 Pua Loke Street, Līhuʻe | Direct customer service and account questions | Lobby hours are Monday–Friday, 8:00 a.m.–4:00 p.m. |
| Payment drop box | Parking lot at 4398 Pua Loke Street | Dropping off payment during expanded access hours | Use only if you are comfortable with drop-off posting timing. |
| Meter reader | Not accepted | Do not use | The Department says meter readers do not accept bill payments. |
Kauai Department of Water Phone Number, Office Hours, Lobby Hours and Address
Use the general number for routing, billing number for account/payment questions, and emergency numbers for active water service problems.
General inquiries
Use for general Department of Water questions and routing to the correct office.
Office address
Department of Water, County of Kauaʻi
4398 Pua Loke Street
Līhuʻe, HI 96766
Hours of operation
Monday–Friday
7:45 a.m.–4:30 p.m.
Use for general business-hour expectations.
Lobby hours
Monday–Friday
8:00 a.m.–4:00 p.m.
Use for walk-in customer service and payment help.
| Need | Official Contact | Practical Note |
|---|---|---|
| General Department inquiries | 808-245-5400 | Main Department of Water number. |
| Billing / ABP questions | 808-245-5442 / billing@kauaiwater.org | Use for payment and automatic bill payment questions. |
| Business-hours service issue | 808-245-5444 | Use for water service issues during business hours. |
| After-hours / weekend / holiday emergency | 808-241-1711 | Police Dispatch contacts DOW standby crew. |
| Department email | dow@kauaiwater.org | Use for general non-urgent inquiries. |
Kauai Water Account Help, Billing Questions and Automatic Bill Payment Setup
Automatic Bill Payment is useful if you want recurring payment from your bank account, but you must submit the form and a voided blank check as instructed by the Department.
Set up ABP
Complete and submit the Automatic Bill Payment form along with a voided blank check to the Department by mail, email or in person.
Stop or cancel ABP
Contact the office at 808-245-5442 or billing@kauaiwater.org to stop or cancel Automatic Bill Payment service.
Portal registration
Use the account holder name exactly as it appears at the top right of the water statement when registering in Koʻu Wai.
1
Open billing and collections FAQs
Useful before calling or submitting forms.
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Start here: Kauaʻi DOW Billing and Collections FAQs.
2
Prepare account details before calling
This makes billing support faster.
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Have your account number, account holder name, service address, statement date, amount due and payment method ready before contacting billing.
Kauai Water Emergency and Service Issue Contacts
Billing questions and active water emergencies are different. Use billing contacts for account questions and emergency/service numbers for water leaks, outages or active service problems.
Nights, weekends and holidays
Police Dispatch will contact the Department of Water standby crew.
| Problem | Best Contact | What to Mention |
|---|---|---|
| Water emergency during business hours | 808-245-5444 | Address, type of issue, active leak/outage and nearest landmark. |
| After-hours emergency | 808-241-1711 | Tell dispatch it is a Department of Water emergency and give exact location. |
| Water outage | Service Outages page + emergency number if urgent | Street, area, outage start time and whether neighbors are affected. |
| Billing issue | 808-245-5442 | Account number, statement date, payment confirmation and amount due. |
| Portal login problem | Billing / general inquiry | Account holder name as printed, account number and error message. |
Kauai Water Bill Too High? Check Leaks, Account Details and Payment Method First
A high water bill may come from actual usage, private plumbing leaks, irrigation, meter reading changes, missed payments, mail delay, Automatic Bill Payment changes or account matching issues.
Check private leaks
Inspect toilets, irrigation systems, hose bibs, water heaters, outdoor lines and wet ground before calling billing.
Check portal account
Make sure you are viewing the correct account and that the registered account holder details match your statement.
Check payment status
If you paid by mail or drop box, keep the receipt or check details and ask billing whether the payment has posted.
Practical Kauai Water Bill Tips That Save Portal Problems, Payment Delays and Wrong-Number Calls
These details matter when registering online, paying close to a deadline, using Automatic Bill Payment or reporting water emergencies after normal office hours.
Register exactly as your bill shows
The Koʻu Wai portal asks for the primary account holder information exactly as it appears on the statement.
Use billing email for ABP changes
For Automatic Bill Payment setup, stop or cancellation questions, use 808-245-5442 or billing@kauaiwater.org.
Do not hand payment to meter readers
The Department says meter readers do not accept bill payments. Use official payment channels only.
Call dispatch after hours
For nights, weekends and holidays, use 808-241-1711 so dispatch can contact the standby water crew.
Kauai Water Department Bill Pay FAQs
These FAQs match real user intent: online payment, phone number, address, lobby hours, billing support, Automatic Bill Payment, service issues and after-hours emergency contacts.
QHow do I pay my Kauai water bill online?▾
Use the official Koʻu Wai Customer Account Portal or start from the Department’s Pay Your Water Bill page.
QWhat is the Kauai Water Department phone number?▾
For general inquiries, call 808-245-5400. For billing-specific questions, call 808-245-5442 or email billing@kauaiwater.org.
QWhere is the Kauai Department of Water located?▾
The Department of Water, County of Kauaʻi is located at 4398 Pua Loke Street, Līhuʻe, HI 96766.
QWhat are Kauai Department of Water office hours?▾
Regular hours are Monday through Friday from 7:45 a.m. to 4:30 p.m. Lobby hours are Monday through Friday from 8:00 a.m. to 4:00 p.m.
QWho do I call for a Kauai water emergency during business hours?▾
For water emergencies during business hours, call 808-245-5444.
QWho do I call for a Kauai water emergency after hours or on weekends?▾
For nights, weekends and holidays, call 808-241-1711. Police Dispatch will contact the Department of Water standby crew.
QCan I set up automatic bill payment for Kauai water bills?▾
Yes. The Department says customers can complete and submit an Automatic Bill Payment form with a voided blank check by mail, email or in person.
QCan I give my Kauai water bill payment to a meter reader?▾
No. The Department says meter readers do not accept bill payments. Pay by mail, online through the Customer Account Portal or by Automatic Bill Payment.
QDoes Kauai Department of Water have a payment drop box?▾
Yes. The Department has a drop box in the parking lot at 4398 Pua Loke Street. Check the official Department site or call before relying on drop-box access during holidays or special closures.
QIs WaterBillsPay.org the official Kauai Department of Water website?▾
No. WaterBillsPay.org is an independent informational guide. Always make payments and confirm account rules through official Kauaʻi Department of Water links.
The Safest Way to Pay or Fix a Kauai Water Bill Issue
For normal online payment, use the official Koʻu Wai Customer Account Portal or start from the Kauaʻi Department of Water Pay Your Water Bill page.
For billing questions or Automatic Bill Payment help, call 808-245-5442 or email billing@kauaiwater.org. For business-hours water service issues, call 808-245-5444. For nights, weekends and holidays, call 808-241-1711.
Pay Your Water Bill Safely, Fix High Bills, Avoid Shutoff, Start Service and Find Official Utility Links
Use this free USA water bill assistant before paying online, calling utility billing, setting up AutoPay, checking a high bill, requesting leak help, starting or stopping service, handling a past due account, or searching for the official city utility portal.
What water bill problem do you need to solve?
Choose your situation. The tool will suggest the safest route, what to prepare, and which official page or office to check first.
Open the official city, county, water authority or utility website first. Do not enter account details into a random sponsored payment page.
If the bill is unusually high, compare usage, billing days, meter read type, toilet leaks, irrigation, late fees and leak adjustment rules before paying blindly.
Safe Water Bill Payment Route
Choose how you want to pay. This helps users avoid wrong portals, posting delays and urgent shutoff mistakes.
AutoPay / Bank Draft Setup Helper
Use this before enrolling in recurring payments so the first draft, current balance and payment date do not surprise you.
High Water Bill Review
Compare your normal bill and usage with the current bill. This gives a practical path before requesting a high bill review.
Leak Adjustment Proof Checklist
Use this before asking for a leak adjustment, high bill review, sewer adjustment or payment plan.
Past Due, Shutoff Notice and Reconnect Helper
Use this if your bill is late, you received a shutoff notice, service is off, or you need a payment plan.
Start, Stop or Transfer Water Service
Use this before moving, closing an account, starting service, transferring service or requesting a final bill.
Water Bill Cost Estimate
Estimate a simple monthly bill from base charge, water usage, sewer, stormwater, trash, service fees and late charges. Official tiered rates may be different.
Bill Dispute and Meter Reading Checklist
Use this before calling billing support about a meter reading, duplicate payment, wrong address, missing payment, estimated bill, or incorrect charge.
Official Water Bill Portal and Phone Finder
Enter city/utility and state to create safe searches for official water bill pay, phone payment, guest pay, AutoPay, start service, leak adjustment, reconnect, assistance and this site’s guide.
Official portal safety
- Use official city, county, authority or utility websites first.
- Check service address before paying.
- Save confirmation number and screenshot.
- Call the utility for shutoff or reconnect situations.
Best sitewide placement
Place this tool after the first payment section or before FAQs. It turns every water bill article into a practical help page, not only a list of links.
Important note
This tool gives educational guidance only. Always confirm payment portals, fees, shutoff rules, assistance programs, account balance and reconnection steps with the official utility.