Fairfax Water Portal & Payment Help
Trying to pay a Fairfax County Water Authority bill? The public utility now commonly uses the name Fairfax Water. Use this guide to pick the right official payment route, avoid the $4.25 card fee when possible, register your portal account, check balance by phone, handle a high bill, start or stop service, and call the right number for emergencies.
Do This First If You Just Want To Pay
Use the Fairfax Water Customer Portal for one-time payment or registered account access.
Open portalFairfax Water says ACH from a bank account is free for one-time or recurring payment.
See payment rulesSpeedpay phone payment: 1-877-311-9969. Have 13-digit account number, ZIP and amount ready.
Call SpeedpayFor water main break, no water, leak or emergency: call 703-698-5613.
Call emergency lineHow To Pay a Fairfax Water Bill Online
Open the official Customer Portal
Go to FWCustomer.org or start from the Fairfax Water payment page. Do not enter account details on a random third-party bill-pay site.
Choose one-time pay or register
The portal supports one-time payment without registration. Registration unlocks bill history, usage history, recurring debit, paperless billing, profile updates and notifications.
Pick ACH if you want the lowest-fee route
Fairfax Water says ACH from a bank account is free, whether one-time or recurring. Debit/credit card payments have a $4.25 convenience fee.
Save payment proof
Keep the confirmation, date, amount, account number, payment method and bank/card record. This matters if the balance display updates later or the payment is questioned.
Fairfax Water Payment Options: Best Use and Official Details
| Payment route | Official detail | Best for | Watch out for |
|---|---|---|---|
| Customer Portal | View and pay bills, turn off paper bills, set recurring debit, see usage/billing history, request notifications, and make one-time payment without registration. | Most customers; especially anyone who wants history or no-fee ACH. | Use official FWCustomer.org, not a lookalike bill-pay website. |
| ACH / bank account | Fairfax Water says ACH is free for one-time or recurring payment. | Customers who want to avoid card convenience fees. | Returned/failed payments can trigger a returned payment charge and recurring debit problems. |
| Debit or credit card | Card payments are processed by Speedpay and carry a $4.25 convenience fee. | Customers who prefer card payment and accept the fee. | Phone/Speedpay transactions are limited to $400 each, up to three every 30 days. |
| Phone payment | Call Speedpay at 1-877-311-9969, TTY 711. Have 13-digit account number, service ZIP code and payment amount ready. | Customers who cannot use the web portal or need automated phone payment. | $4.25 convenience fee applies. |
| In person | Cash, check or money order accepted at the Morin Building, 8570 Executive Park Avenue, Monday–Friday 8:00 a.m.–4:30 p.m. except holidays. | Customers who need to pay in person or use cash/check/money order. | Phone support is available later than lobby hours. |
| Night deposit box | Check or money order may be deposited anytime using the night deposit box at the front entrance of the main building. | After-hours check/money order drop-off. | Do not use for urgent same-day shutoff or restoration proof. |
| Send payments to Fairfax Water, P.O. Box 5008, Merrifield, VA 22116-5008. | Non-urgent check or money order payment. | Allow mailing and processing time before due date. | |
| Bank bill pay | Use the 13-digit account number and remit address. Payee may appear as Fairfax County Water Authority or Fairfax Water depending on the bank. | Customers who use their bank’s online bill-pay feature. | Check your bank’s fees and delivery timing. |
Customer Portal: Register or Pay Once?
Use one-time pay when…
- You only need today’s payment.
- You have the correct account details.
- You do not need usage history.
- You are not setting AutoPay.
Register when…
- You want current and past bills.
- You want balance access anytime.
- You want to compare water usage quarter to quarter.
- You want recurring debit or paperless billing.
Registration needs
- Fairfax Water account number.
- City for the service property.
- ZIP code for the service property.
- Valid email and profile details.
Phone Pay, Balance Check and IVR Rules
Customer Service
703-698-5800
Call Center weekdays, 8:00 a.m.–6:00 p.m.
Speedpay phone
1-877-311-9969
Use for phone payment with 13-digit account number, ZIP and amount.
Balance by IVR
From 703-698-5800, select option 3 during business hours or option 2 after hours.
Data update
Account information is updated once daily, Tuesday through Saturday, by 7:00 a.m. ET, except holidays.
Recurring Debit: No-Fee AutoPay Setup Details
How it starts
You must register in the Customer Portal. Fairfax Water says recurring debit begins upon sign-up in the amount of the current balance.
Draft timing
The amount is deducted from checking or savings on the bill’s due date. Each bill serves as notice of the amount to be deducted.
Cancel timing
Change or cancellation must be submitted at least four business days before the scheduled debit date.
| Recurring debit question | Official rule | User action |
|---|---|---|
| Will I still get a bill? | Yes. Fairfax Water says you still receive a bill for records. | Read it because usage and amount may change each billing period. |
| What if funds are unavailable? | A return payment fee applies; after a second returned payment within a year, participation is discontinued. | Keep enough money in the bank account before due date. |
| Can the amount change? | Yes. The authorization allows Fairfax Water to adjust the drafted amount for usage and charges. | Do not ignore the bill even if AutoPay is active. |
| Is ACH free? | Fairfax Water lists ACH from a bank account as free of charge. | Use ACH if avoiding the $4.25 card fee matters. |
Fairfax Water Phone, Address and Hours
Headquarters
8570 Executive Park Ave.
Fairfax, VA 22031.
Office hours
8:00 a.m.–4:30 p.m.
Weekdays, except holidays.
Customer Service
703-698-5800
Weekdays, 8:00 a.m.–6:00 p.m.
Emergency line
703-698-5613
24/7 after-hours and water-related emergencies.
2026 Fairfax Water Rates and Fee Notes
Use this section when a 2026 bill looks different from a past bill. Rates changed effective April 1, 2026, and some account/service fees can also affect the total.
| Item | Official detail | Why it matters |
|---|---|---|
| New rates | Fairfax Water rates changed effective April 1, 2026. | A higher bill may involve both usage and rate changes. |
| Estimated monthly impact | Fairfax Water described the increase as about $1.93 per month for most customers. | Use usage history to separate rate impact from leak/usage changes. |
| First bill account charge | FAQ says initial bills include a one-time $48 account charge. | New customers should not compare the first bill to a normal quarterly bill. |
| After-hours restoration | 2026 rates page lists an after-hours service restoration charge of $58. | Same-day restoration requests after normal hours can cost more. |
| Returned payment | 2026 rates page lists a $25 returned payment charge. | Important for AutoPay/ACH users with insufficient funds. |
| Unauthorized use | 2026 rates page lists a $250 unauthorized use charge. | Do not attempt to reactivate water service yourself after disconnection. |
High Fairfax Water Bill: What To Check Before Paying Blindly
Toilet leak first
Fairfax Water says toilet leaks are the most common leak source and one running toilet can waste over 1,000 gallons a day.
Outdoor use
New lawn watering, sprinkler systems, irrigation, pool filling and hose use can drive large usage increases.
Portal usage history
Registered portal users can compare water usage quarter to quarter and view current/past bills.
| Check | How to do it | Next step |
|---|---|---|
| Toilet dye test | Put dye/food coloring in the tank, do not flush, wait 15 minutes. Color in the bowl means a leak. | Repair promptly and save receipts/invoices if asking for adjustment. |
| Meter leak test | Turn off faucets/running water, note meter reading, wait at least 15 minutes, then check whether numbers changed. | If numbers move with no water use, investigate leak or call Customer Service. |
| Underground leak check | Turn off the main valve inside and verify faucet flow stops, then see whether the outside meter keeps running. | Meter movement may point to a leak between meter and house valve. |
| Meter read concern | If you suspect a misread, call Customer Service at 703-698-5800. | Fairfax Water says it will check the reading and correct billing errors if needed. |
Leak Adjustment: What Fairfax Water Requires
Important: Fairfax Water may offer a one-time courtesy adjustment for unusually high water charges caused by leaks, but the customer must promptly repair the leak, provide written proof of repairs, and not have received a Courtesy Leak Adjustment during the preceding five years.
Repair required
Fix the leak promptly and properly. Keep plumber invoices, hardware receipts, repair dates and photos.
Proof required
Submit copies of receipts or an invoice with the Leak Adjustment Request Form.
Review timing
Fairfax Water’s leak adjustment materials say customers are notified after review; the form notes response after required information is received.
| Adjustment type | Rule summary | Cap / limit |
|---|---|---|
| Underground service-line leak | Rules describe 100% of usage above normal usage for one billing period. | One quarterly billing period; water adjustment capped at $5,000. |
| Inside structure / irrigation leak | Rules describe 66% of usage above normal usage for one billing period. | One quarterly billing period; water adjustment capped at $5,000. |
| Unknown loss | Requires written request and proof from contractor/plumbing professional that no leaks are present. | One-time per account; capped at $5,000 under rules. |
If You Need Help Paying a Fairfax Water Bill
Fairfax Water lists local community organizations that may help with utility bills. Contact the organization that matches your locality or ZIP code. Do not wait until the account is close to disconnection.
| Area / situation | Organization listed by Fairfax Water | Phone / route |
|---|---|---|
| Fairfax County residents | Fairfax County Coordinated Services Planning | 703-222-0880 |
| City of Falls Church residents | City of Falls Church Department of Housing and Human Services | 703-248-5005 |
| Fairfax City residents | Fairfax City Department of Human Services | 703-385-7894 |
| Vienna, Oakton, Dunn Loring, Merrifield | CHO | 703-281-7614 |
| Parts of Springfield/Alexandria ZIP areas | ECHO / Koinonia / other local organizations may apply by ZIP | Check Fairfax Water payment-help page for exact ZIP match. |
Start or Stop Fairfax Water Service
Start service
Fairfax Water links Start Service through the Customer Portal. Use it when moving into a property served by Fairfax Water.
Stop service
Stop service through the Customer Portal before moving out so the final bill and account closeout are handled correctly.
First bill note
Fairfax Water FAQ says initial bills include a one-time $48 account charge for establishing the account, turn-on field work and initial meter reading.
Tenant, Landlord and Lien Offset Notes
Portal helps tenants/landlords
Fairfax Water says registered portal users can send messages and complete tenant-related account tasks through the Customer Portal.
Lien Offset Payment
The tenants/landlords page describes a $190 Lien Offset Payment that is applied to the final bill when the account is closed.
Same-day service
If service begins the same day, Fairfax Water says customers must contact 703-698-5800 once the Lien Offset Payment is paid to have water turned on.
Local Fairfax Water Tips That Save Time
“Fairfax County Water Authority” is still a useful bank-pay name
Fairfax Water says some bank bill-pay systems may show the payee as Fairfax County Water Authority or Fairfax Water. Use the 13-digit account number and remit address.
Use ACH before Speedpay when possible
ACH is the cleanest no-fee route. Speedpay/card is useful but adds the $4.25 fee and has transaction limits.
Check usage before asking for a rate explanation
2026 rates changed, but a large bill jump is often usage or leak-related. Compare portal usage first.
Call emergency line only for water emergencies
Use 703-698-5613 for water-related emergencies. Use Customer Service for account balance, payment, portal and billing questions.
Fairfax Water Office Map and Visit Planning
Use this for office orientation only. Call before visiting if your issue is payment posting, shutoff, leak adjustment, account access, or same-day service restoration.
Address
Fairfax Water, Morin Building, 8570 Executive Park Avenue, Fairfax, VA 22031.
Hours
Office payment hours: Monday–Friday, 8:00 a.m.–4:30 p.m. ET, except holidays.
Bring this
Bill, 13-digit account number, service address ZIP, payment proof, ID if needed, and leak-repair proof if asking about adjustment.
Official Fairfax Water Links Used in This Guide
Fairfax Water Bill Pay FAQs
Is Fairfax County Water Authority the same as Fairfax Water?
Fairfax Water is the current utility name commonly used for the Fairfax County Water Authority. Some bank bill-pay systems may still show the payee as Fairfax County Water Authority or Fairfax Water.
Where do I pay a Fairfax Water bill online?
Use the official Fairfax Water Customer Portal at FWCustomer.org or start from the Payments page on FairfaxWater.org.
Can I pay without registering?
Yes. Fairfax Water says the Customer Portal allows one-time payment without registration.
Is ACH payment free?
Yes. Fairfax Water says ACH from a bank account is free for one-time or recurring payments.
What is the Fairfax Water card payment fee?
Debit and credit card payments through Speedpay carry a $4.25 convenience fee.
What is the Fairfax Water phone payment number?
Call Speedpay at 1-877-311-9969, TTY 711. Have your 13-digit account number, service address ZIP code and payment amount ready.
What is Fairfax Water Customer Service phone number?
Call 703-698-5800. Fairfax Water lists Customer Service Call Center hours as weekdays, 8:00 a.m.–6:00 p.m.
What number do I call for water emergencies?
Call 703-698-5613 for after-hours service or water-related emergencies such as no water, main breaks and urgent leaks.
Why is my Fairfax Water bill high?
Common reasons include toilet leaks, underground leaks, irrigation, outdoor water use, billing cycle differences, meter read concerns and the 2026 rate change. Start with portal usage history and leak checks.
Does Fairfax Water offer leak adjustments?
Fairfax Water may offer a courtesy leak adjustment if the leak is repaired promptly, written proof of repairs is provided, and the account has not received a Courtesy Leak Adjustment during the preceding five years.
Where do I mail Fairfax Water payments?
Mail payments to Fairfax Water, P.O. Box 5008, Merrifield, VA 22116-5008.
Is WaterBillsPay.org the official Fairfax Water website?
No. This is an independent informational guide. Use FairfaxWater.org and FWCustomer.org for live balance, payment, service rules, fees and emergency support.
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.