← Back to Marathon City

Marathon Water Bill Pay & Setup

Official water utility, online billing, and customer service guide for Marathon, Florida.

Online Bill Pay Portal

Securely pay your municipal water and sewer bills online without any hassle.

Pay Bill Now 💳

Contact & Office Details

🏢

Service Provider

Florida Keys Aqueduct Authority (FKAA)

📞

Customer Service

305-743-5409

🕒 Monday - Friday, 8:00 AM - 5:00 PM

🏛️

In-Person Office

9805 Overseas Hwy, Marathon, FL 33050

📝

Important Notice

FKAA provides potable water; Marathon City handles municipal wastewater services separately.

Complete Water Utility Guide

Tapping into the Florida Keys Aqueduct Authority

Freshwater in Marathon travels over 100 miles from the mainland down a massive pipeline. The Florida Keys Aqueduct Authority (FKAA) is the sole provider of potable water for the entire island chain. To initiate fresh water flow at a new Marathon residence, you must submit an application directly to the FKAA. This can be accomplished through their comprehensive online portal or by visiting a regional customer service branch. You will need to provide your social security number, a valid driver's license, and documentation of your property lease or purchase. A standard start-up deposit is universally required.

Satisfying Your FKAA Monthly Invoices

The FKAA ensures that fulfilling your financial obligations is an effortless experience. The authority’s digital payment platform allows residents to securely clear their monthly invoices using credit cards, debit cards, or ACH bank transfers from anywhere in the world. For locals who prefer to drop off their payments, secure physical drop boxes are available. Additionally, part-time 'snowbird' residents frequently utilize the automatic bank draft feature, ensuring their island property's utility bills are paid punctually even when they are residing in another state.

Wastewater Logistics with the City of Marathon

While the FKAA supplies the drinking water, the City of Marathon operates its own highly advanced municipal wastewater utility to protect the nearshore waters from septic pollution. Your monthly utility obligations in Marathon will include separate billing considerations for this sewer service. The city calculates your wastewater charges based on the metered water consumption data transmitted by the FKAA. Ensuring both of these vital services are paid promptly is essential for maintaining full habitability of your island home.

Crucial Conservation in the Middle Keys

Because every drop of water is pumped down from Florida City, conservation is not just encouraged in Marathon—it is a critical necessity. The FKAA and the South Florida Water Management District mandate incredibly strict year-round irrigation rules. Watering your tropical landscaping is heavily restricted to specific days based on your house number, and absolutely no automated sprinkling is permitted during the peak evaporation hours between 10:00 a.m. and 4:00 p.m. The authority also actively promotes the installation of cisterns and rain barrels to capture tropical downpours for outdoor watering needs.

Dealing with Delinquency and Meter Locks

Maintaining an active account with the FKAA requires strict adherence to their billing deadlines. If a payment is missed, a statutory late penalty is applied to the balance. The authority will dispatch a final warning notice, outlining the exact date a physical disconnection will occur if the debt is not settled. If a field technician is sent to lock the meter at your Marathon property, the financial penalties escalate rapidly. Restoring the water supply will mandate the complete payment of the overdue charges, the accrued late fees, and a hefty manual reconnection surcharge.

Frequently Asked Questions

Q: Where can I pay my water bill online in Marathon?

A: You can pay your bill securely through the official payment portal managed by Florida Keys Aqueduct Authority (FKAA).

Q: What are the office hours for water utility services?

A: The office is open during these hours: Monday - Friday, 8:00 AM - 5:00 PM.

Q: Who do I call for water emergencies or billing questions?

A: You can contact Florida Keys Aqueduct Authority (FKAA) customer service directly at 305-743-5409.

🗑️

Looking for Trash & Recycling info?

Find your pickup schedule, bulk waste rules, and holiday delays for Marathon.

View Trash Schedule →