Monterey Water Bill – Pay Online, Phone or Walk-In (2026)

Updated 2026 • Official Monterey One Water Links

Monterey One Water Sewer Bill Online Payment, Phone Pay, Auto Pay, Mail and Walk-In Customer Service Guide

Use this guide to pay your Monterey One Water bill online, use the secure payment portal without creating an online account, pay by phone, enroll in Auto Pay, mail payment, visit the Customer Service Center, find your statement and contact support for sewer billing questions.

866
phone payment
24/7
online portal
Auto
bank deduction
M–F
support hours
Monterey One Water Customer Service
831-372-3367

Alternate phone: 831-422-1001. Pay by phone: 866-514-6814. Customer Service Center: 5 Harris Court, Building D, Monterey, CA 93940.


01 — Overview

Monterey One Water Sewer Bill Payment Basics for Residents and Property Owners

Monterey One Water customers can pay sewer bills online, pay by phone, enroll in Auto Pay, mail payment, use customer support resources and visit the Customer Service Center for account or billing help.

The online payment portal is available 24 hours per day and does not require an online account. This makes it useful when you need to make a simple sewer bill payment without setting up a full login profile.

Monterey One Water also offers Auto Pay for customers who want their bi-monthly wastewater fee automatically deducted from a checking or savings account. This can reduce missed due dates, but you should still review every bill for unusual usage or billing changes.

Simple rule: Start from Monterey One Water’s official Payment Options page before entering account, card, bank or e-check details. Avoid third-party bill-pay pages unless you clearly understand the fees and posting rules.
NeedOfficial Monterey One Water OptionWhat To Know
Pay onlineSecure Online Payment PortalNo online account is required; available 24/7.
Pay by phone866-514-6814Use bank account or Visa, Mastercard or Discover card.
Auto PayAuto Pay ProgramAutomatically deducts from checking or savings.
Customer service831-372-3367 or 831-422-1001Use for billing, statements, account questions and support.
Walk-in help5 Harris Court, Building DSupport hours are Monday through Friday, 8 a.m. to 5 p.m.

02 — Online Payment

How to Pay Monterey One Water Bill Online Through the Official Portal

The safest online route is to start from Monterey One Water’s official Payment Options page and then use the secure Online Payment Portal listed there.

1
Open the official Payment Options page
Start from montereyonewater.org

Go to Monterey One Water’s official Payment Options page. This is the safest starting point because it lists the current online, phone and Auto Pay options.

Official payment options pagehttps://www.montereyonewater.org/194/Payment-Options
2
Choose the Online Payment Portal
No online account required

The official payment page says the secure Online Payment Portal can be used to pay your sewer bill and no online account is required. Use the portal link from the official page.

3
Enter details from your sewer bill
Do not guess account data

Keep your latest Monterey One Water sewer bill open. Enter the account number, customer name, service address or other details exactly as shown on the bill.

4
Choose card or e-check payment
Review convenience fee before submitting

The official page says credit/debit card payments with Visa, Mastercard or Discover and e-check from checking or savings are accepted. A small convenience fee applies when using this service.

5
Save payment confirmation
Useful for account questions

Save the receipt, confirmation number, payment amount and payment date. If the payment does not show or your account has a billing question, call Monterey One Water Customer Service.

Online payment tip: If you are paying close to the due date, save the confirmation number immediately. For posting questions, customer service can help faster when you provide exact payment details.

03 — Auto Pay

Monterey One Water Auto Pay Program for Checking or Savings Accounts

Auto Pay simplifies your Monterey One Water bi-monthly wastewater fee by automatically deducting payment from your checking or savings account.

Automatic deduction

Good for customers who want fewer manual payment steps each billing cycle.

Checking account

Use your checking account details if that is your preferred bill payment method.

Savings account

Auto Pay can also use savings account details if allowed by your bank.

1
Open Auto Pay information from official support
Use Monterey One Water resources

Start from the official support or payment options page and choose Auto Pay Program or Auto Pay Sign Up. This ensures you use the current authorization process.

Official support pagehttps://www.montereyonewater.org/253/Support
2
Prepare account and bank details
You need accurate billing and bank information

Keep your Monterey One Water account number, property address, bank name, account type, bank account number and routing number ready before filling out authorization details.

3
Submit the authorization carefully
Check every digit before sending

Because Auto Pay uses bank information, double-check the routing number and account number. A wrong digit can cause failed payment or delays.

4
Review your next bill even after Auto Pay
Auto Pay does not replace bill review

Auto Pay helps prevent missed payments, but you should still review each statement for billing changes, service address issues, account ownership changes or unusual charges.

Auto Pay tip: After submitting Auto Pay, watch your next billing cycle. Do not assume it is active until you see confirmation or the first successful automatic deduction.

04 — Phone Payment

How to Pay Monterey One Water Bill by Phone

Phone payment is useful when you do not want to use the website or you prefer to pay with your bank account or card through the toll-free phone payment system.

Phone payment

Call 866-514-6814 to pay your sewer bill over the phone.

Card payment

Visa, Mastercard and Discover are listed for phone payment.

Bank account

Bank account payment is also listed for phone payment.

1
Call the official phone payment number
Use the toll-free number listed by Monterey One Water

Call the official phone payment number and follow the automated instructions. Keep your latest sewer bill ready before calling.

Pay by phone866-514-6814
2
Enter account details from your bill
Use the bill, not memory

You may need your account number, service address, billing ZIP code or other details. Enter them exactly as they appear on your Monterey One Water bill.

3
Choose bank account or card
Convenience fee may apply

The official payment page says you can pay by phone using your bank account or credit/debit card. Review the convenience fee before completing payment.

4
Write down the confirmation number
Keep proof until payment posts

Save the confirmation number, amount and payment date. If there is a billing issue, call customer service at 831-372-3367 or 831-422-1001.

Phone payment tip: If you are not sure whether the sewer bill is current, call Customer Service first before making duplicate payments through the phone system.

05 — Mail and Walk-In Help

Monterey One Water Mail, Walk-In Customer Service Center and Statement Help

For account questions, statement copies, address changes, payment support or in-person help, use Monterey One Water’s Customer Service Center and official support resources.

Customer Service Center

5 Harris Court, Building D, Monterey, CA 93940.

Support hours

Monday through Friday, 8 a.m. to 5 p.m.

Mailing address

P.O. Box 2109, Monterey, CA 93942.

1
Use mail for non-urgent payments or billing correspondence
Allow enough mailing time

If you mail payment or billing documents, include your account number and service address so Monterey One Water can match the correspondence to the correct sewer account.

Mailing addressMonterey One Water P.O. Box 2109 Monterey, CA 93942
2
Visit the Customer Service Center for walk-in help
Best for account and support questions

Use the Customer Service Center if you need help understanding a bill, updating information, finding a statement, handling account questions or discussing support options.

Customer Service Center5 Harris Court Building D Monterey, CA 93940
3
Check support hours before visiting
Monday through Friday support

Customer Service support hours are listed as Monday through Friday, 8 a.m. to 5 p.m. Holiday closures may apply, so check the official website before making a special trip.

Mail and walk-in tip: Do not mail urgent payments close to the due date. Use online or phone payment when timing matters, then keep the confirmation.
Insider Tips

Real Monterey One Water Bill Tips That Save Time, Fees and Account Confusion

These practical checks help Monterey One Water customers avoid third-party payment confusion, missing account details, late payment stress and Auto Pay setup mistakes.

Tip 01

Start from the official payment page

Open Monterey One Water’s Payment Options page first before clicking any payment portal link.

Tip 02

No login may be needed

The official online portal says no online account is required, useful for quick sewer bill payment.

Tip 03

Check the convenience fee

Online and phone payment may include a small convenience fee, so review it before submitting.

Tip 04

Use Auto Pay for routine bills

Auto Pay can help with the bi-monthly wastewater fee, but confirm the first deduction actually happens.

Tip 05

Keep your sewer bill open

Use exact account and service details from the bill. Guessing account information can delay payment matching.

Tip 06

Call before duplicate payment

If you already paid but the balance still shows, call customer service with confirmation details before paying again.

06 — Help

Monterey One Water Customer Service Phone, Mailing Address, Walk-In Office and Map

Use Monterey One Water Customer Service for billing questions, statement copies, account help, payment support, Auto Pay questions, address changes and service-related sewer billing support.

ResourceUse It ForOfficial Detail
Customer ServiceBilling questions, statements, payment support, account help831-372-3367
831-422-1001
Phone PaymentPay by bank account or card over the phone866-514-6814
Payment OptionsOnline payment, phone payment, Auto Pay informationOpen Payment Options
Support CenterCustomer service, payment options, Auto Pay, statements, address formsOpen Support
Customer Service CenterWalk-in help and account support5 Harris Court
Building D
Monterey, CA 93940
Mailing AddressMail payment or billing correspondenceP.O. Box 2109
Monterey, CA 93942
Support HoursKnow when staff support is availableMonday–Friday
8:00 a.m.–5:00 p.m.
Regional Treatment & Recycling FacilitiesAgency facility reference14811 Del Monte Boulevard
Marina, CA 93933
Phone: 831-422-1001

Monterey One Water Customer Service Center

5 Harris Court, Building D, Monterey, CA 93940. Support hours are listed as Monday through Friday, 8 a.m. to 5 p.m.

Open Map
Before calling: Keep your Monterey One Water account number, service address, latest sewer bill, payment confirmation, Auto Pay question, statement request or address-change details ready.

07 — FAQ

Monterey One Water Bill Pay, Online Portal, Phone Payment, Auto Pay and Walk-In FAQs

These answers cover common Monterey One Water sewer bill payment questions before paying online, using phone payment, enrolling in Auto Pay, mailing payment or contacting customer service.

QWhere do I pay my Monterey One Water bill online?

Use the official Monterey One Water Payment Options page and choose the secure Online Payment Portal.

QDo I need an online account to pay Monterey One Water online?

No. Monterey One Water says no online account is required to pay through the secure Online Payment Portal.

QWhat is the Monterey One Water pay-by-phone number?

Monterey One Water lists 866-514-6814 as the toll-free phone payment number.

QWhat payment methods are accepted online?

The official payment page says credit/debit cards with Visa, Mastercard or Discover and e-check from checking or savings are accepted through the online payment portal.

QDoes Monterey One Water charge a convenience fee for online or phone payment?

Yes. Monterey One Water says a small convenience fee applies when using the online or phone payment service.

QCan I set up Auto Pay for Monterey One Water?

Yes. Monterey One Water offers an Auto Pay Program that automatically deducts payment from a checking or savings account.

QWhere is Monterey One Water Customer Service located?

The Customer Service Center is located at 5 Harris Court, Building D, Monterey, CA 93940.

QWhat is the Monterey One Water customer service phone number?

Customer Service can be reached at 831-372-3367 or 831-422-1001.

QWhere do I mail Monterey One Water payment or billing correspondence?

The listed mailing address is Monterey One Water, P.O. Box 2109, Monterey, CA 93942. Include your account number and service address when mailing payment or documents.

QIs WaterBillsPay.org the official Monterey One Water website?

No. WaterBillsPay.org is an independent informational guide. Use official Monterey One Water resources for final payment, account, service and billing decisions.

Final takeaway: For Monterey One Water bill payment, start with the official Payment Options page, use the secure online payment portal for 24/7 payment, call 866-514-6814 for phone payment, enroll in Auto Pay if you want automatic deduction, contact Customer Service at 831-372-3367 or 831-422-1001, mail correspondence to P.O. Box 2109 in Monterey, or visit 5 Harris Court, Building D during support hours.
Editorial review note: This guide was reviewed on May 3, 2026. Official Monterey One Water payment options, customer service address, phone payment number, Auto Pay support, mailing address, support hours and contact details were checked against Monterey One Water’s official website before publication.

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