Pay your Los Angeles County Waterworks Districts (LACWD) bill quickly and securely through the official MyWAM (My Waterworks Account Manager) portal. Register once to view your bill, make payments, enroll in AutoPay, and monitor water usage.
MyWAM Online Payment Portal (Register / Login) https://dpw.lacounty.gov/mywam/ Official portal to register, log in, view your balance, and pay your water bill online.
LA County Waterworks Districts Official Site https://pw.lacounty.gov/core-service-areas/water-resources/waterworks-districts/ Main information page with payment options, contact details, and customer service resources.
How to Pay Your LA County Waterworks Bill
The Los Angeles County Waterworks Districts provide water service to various areas in Los Angeles County. Online payments are processed through the secure MyWAM portal.
Guest Pay / One-Time Payment (No Login Required)
LA County Waterworks does not offer a public guest/one-time payment option. You must register for a MyWAM account to pay online.
Login to Pay / New Portal
Register or sign in at the MyWAM portal (link above). First-time users will need your account/customer number from your billing statement. Once logged in, you can view your balance, make one-time payments, enroll in AutoPay, and track your water usage.
Pay by Phone
Call the 24-hour automated payment line at 1-877-637-3661 (select Option 1). Have your account number and payment information ready.
Payment Address (Mail)
Los Angeles County Treasurer P.O. Box 512150 Los Angeles, CA 90051-0150
Use the payment coupon from your bill and include your account number for fastest processing.
In-Person or Pay in Store
Pay in person at your local Waterworks District office or the Main Office Cashier in Alhambra. A 24-hour drop box is also available at some locations. Check the official website for your specific district office hours and location.
Contact LA County Waterworks
- Customer Service: 1-877-637-3661 (Mon–Fri 8:00 a.m. – 5:00 p.m., 24-hour automated line)
- Water Emergencies: 1-877-637-3661
- Official Website: pw.lacounty.gov/waterworks
Mobile App & Payment Assistant
No dedicated mobile app exists. The MyWAM portal is mobile-friendly and works on smartphones and tablets.
Fees and Late Payments
Credit card payments may have a convenience fee (shown at checkout). eCheck/bank payments are usually the lowest cost. Pay by the due date (typically 25 days from bill date) to avoid late fees and possible service disconnection.
Frequently Asked Questions
How do I pay my LA County Waterworks bill online?
Register or log into the MyWAM portal at dpw.lacounty.gov/mywam/ to view and pay your bill.
Can I make a guest payment for my LA County Waterworks bill?
No. Registration for a MyWAM account is currently required for online payments.
What is the phone number for LA County Waterworks bill pay?
Call 1-877-637-3661 (24-hour automated payment system available).
Where do I mail my LA County Waterworks payment?
Send to Los Angeles County Treasurer, P.O. Box 512150, Los Angeles, CA 90051-0150.
How do I set up Auto Pay for my LA County Waterworks bill?
Log into your MyWAM account and enroll in AutoPay under the payment settings.
Is there a mobile app for LA County Waterworks bill pay?
No dedicated mobile app is available. Use the MyWAM website on your mobile browser.
How do I avoid late fees on my LA County Waterworks bill?
Pay before the due date using MyWAM, AutoPay, phone, mail, or in person at a district office.
