Payment channels

Pay Marin Municipal Water District (Marin Water)

Use the provider’s verified online, telephone, mail, or counter instructions. Check the final confirmation screen for the amount, processing date, and any transaction fee before submitting.

Primary online route

Use the official payment portal

The direct portal is the fastest route when it is available. The provider identifies its payment gateway as Paymentus; Marin Water states that Paymentus operates the modernized online bill-pay platform and provides after-hours payment support.. Never enter account credentials into a lookalike site reached through an unsolicited message.

Open payment portal ↗

Telephone payment

Phone IVR

866-332-2444, available 24/7 for one-time payments and autopay enrollment; Paymentus after-hours bill-pay support is 800-420-1663.

Have your account number and payment instrument ready. Follow the provider’s recorded prompts and retain the confirmation number.

Alternative channels

Mail, text, and in-person payment instructions

Pay by text

The reviewed Marin Water payment pages describe online autopay, email reminders, and phone payment but do not publish a verified text-to-pay keyword or enrollment sequence. Customers should use the new Paymentus portal or call 415-945-1400 for current enrollment instructions.

Mail-in address

Marin Water, P.O. Box 994, Corte Madera, CA 94976. The district says checks mailed in the reply envelope post on the following business day after receipt.

Counters, drop boxes, and office hours

Marin Water Customer Service, 220 Nellen Avenue, Corte Madera, CA 94925, accepts in-person payments Monday-Thursday 8:00 a.m.-4:30 p.m., excluding holidays; the public counter is closed Fridays. An after-hours drop box is located in front of the building. The district’s payment pages do not provide a separate retail-counter list.

Accepted digital instruments

What you can use online

Online and phone payments support credit card, checking-account/ACH payments, and digital wallets including Venmo, Apple Pay, Google Pay, and PayPal. Autopay and one-time payments are available; payment posting may take three to five business days in the online system.

2026 transaction pricing

Convenience fees

No customer credit-card service fee was identified in the district’s published payment materials; confirm any current processor disclosure in the Paymentus checkout before submitting a transaction.

Fees can vary by payment type, channel, account class, and processor terms. The checkout screen is the final fee disclosure.

Payment guidance

Choose the payment channel that fits your deadline

The safest payment path is the one published by Marin Municipal Water District (Marin Water) and matched to the account information on your bill. Online portals are convenient, but telephone, mail, counter, and drop-box options may follow different posting schedules and may use different fees.

For a routine payment, save the final confirmation page or IVR number and check when the transaction will post. For a same-day shut-off notice, do not assume that submitting a card payment automatically stops a field order; ask the provider what amount and confirmation are required.

Never send your account number, password, card details, or bank information to Water Ledger. Those details belong only on the provider’s verified payment channel or at an authorized counter.

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