The Mission of the Key Largo Wastewater Treatment District is to preserve and protect the delicate ecosystem of the Florida Keys while providing
exceptional customer service.

Welcome to Key Largo The Florida Keys Signboard

Our Ecosystem

The survival of the existing Florida Keys marine ecosystem is dependent on clear, low-nutrient waters. KLWTD is helping reverse the trend of environmental degradation and restore and maintain the Florida Keys marine ecosystem.

Our Ecosystem


Lets continue to do our part to DUMP DENGUE.

“The actions taken by the Florida Keys Mosquito Control District and the community prove to be promising. Recent Dengue transmission in the Upper Keys has been limited, with new cases, hopefully, on the decline,” says Dr. Mark Whiteside, Medical Director for the Florida Department of Health in Monroe County. “It’s important for residents to continue following basic mosquito bite prevention methods to help end the outbreak.”
... See MoreSee Less

View on Facebook
View on Facebook

Key Largo Wastewater Treatment District needs your cooperation to protect the wastewater system particularly now due to the current COVID-19 outbreak. People are cleaning and disinfecting more frequently with bleach wipes and potentially substituting other items for toilet paper, such as baby wipes and paper towels.

KLWTD is asking customers to throw these items in the trash, not flush them down the toilet. These items do not break down in the sewer system and can cause significant clogs that could lead to equipment failures and treatment plant issues.

It is important to only dispose of toilet paper and human waste in the toilet. Otherwise, it can cause costly clogs or back-ups in your sewer system.

Here is a list of items that should never be flushed down the toilet:

Disposable wipes (even if marked "flushable")
Wet Wipes
Paper Towels
Facial Tissues
Face-Cleaning Wipes
Grease / Oils
Feminine Hygiene Products
Cotton Swabs / Cotton Balls
Dental Floss
Medicines / Vitamins
Cigarettes / Cigar Butts
... See MoreSee Less

View on Facebook

KLWTD is open, but we ask that customers needing assistance do so by telephone or e-mail, instead of in office. If documents need to be submitted, an electronic version is preferred.

If you have questions or concerns please call 305-451-4019 or email For a sewer emergency call 305-451-4019 and press 1 for 24-hour assistance.

We are taking this precaution for the safety of the community and our staff and appreciate your patience and understanding.
... See MoreSee Less

View on Facebook

KLWTD's offices will be closed Monday, February 17th in observance of Presidents' Day.

If you have a sewer emergency, please call 305-451-4019 and press 1 to speak to a KLWTD system technician 24 hours a day.

Wishing everyone a happy and safe weekend!
... See MoreSee Less

View on Facebook

We're proud to announce that KLWTD was selected to receive a 2019 Domestic Wastewater Plant Operations Excellence Award for the South District from DEP in recognition of outstanding treatment plant operation, maintenance, and compliance.

Plant Operators Bobby Prince, Joe Williams and Plant Operations Manager, Jered Primicerio accepted the award that was presented by Jon Iglehard, DEP Director of the South District.
... See MoreSee Less

View on Facebook

KLWTD's offices will be closed Monday, January 20th in observance of Martin Luther King Jr. Day.

If you have a sewer emergency, please call 305-451-4019 and press 1 to speak to a KLWTD system technician.
... See MoreSee Less

View on Facebook

The District's Board of Commissioners approved a 15% reduction to the monthly wastewater billing rates. The lower rates will begin with the January billing cycle. ... See MoreSee Less

View on Facebook

KLWTD office are closed Thursday and Friday for the Thanksgiving Holiday.

For wastewater system emergencies or issues call 305-451-4019 and press 1.

The District wishes you and your family a wonderful Thanksgiving!
... See MoreSee Less

View on Facebook

The KLWTD offices are closed for regular business today for our annual employee meeting.

If you have a sewer emergency please call 305-451-4019 and press 1. A system tech will assist you.

All inspections will be postponed until tomorrow. Thank you for your understanding!
... See MoreSee Less

View on Facebook

While preparing for the possibility of potentially damaging winds, heavy rainfall, coastal flooding, and fast-moving squalls from Hurricane Dorian, please take a moment to review this guide to sewer use for residence in the Upper Keys. ... See MoreSee Less

View on Facebook


Monroe County Emergency Management continues to prepare for the possibility of potentially damaging winds, heavy rainfall, coastal flooding, and fast-moving squalls with Hurricane Dorian’s projected path.

As of the current 2 p.m. Thursday weather briefing by the National Weather Service Key West, specific weather impacts remain uncertain for the Florida Keys, but damaging tropical storm force winds and squalls are possible and could be expected throughout the Florida Keys on Sunday and Monday, especially in the Upper Keys areas and Ocean Reef.

The Upper Keys, Tavernier, Rock Harbor, and Key Largo, could also experience coastal and street flooding on the bayside that can be comparable to the highest king tides that have been historically experienced in that area.

“Watches could be issued for portions of the Florida Keys sometime Friday,” said Jon Rizzo, National Weather Service Key West. “But remember that impacts can extend far outside the cone.”

Monroe County Emergency Management’s critical staff has checked in and is prepared to activate if needed. The County is waiting until after tomorrow morning’s briefing to decide if the Emergency Operations Center will need to be set up.

“We are still three days out from a major hurricane heading toward the east coast of Florida and the cone of error is still very large,” said Marty Senterfitt, Director of Monroe County Emergency Management. “The Upper Keys are still in that cone.”

County Administrator Roman Gastesi said now is not the time to let any guard down. “Timing of Dorian’s turn is critical to the impacts the Florida Keys will experience,” he said. “Dust of your hurricane plans and be ready to implement them on a moment’s notice”

The County is taking extra precautions like gassing up vehicles and wants residents to continue to monitor the storm. Now is the time to fuel up vehicles, stock up on supplies, and keep cash on hand. Hurricane preparation information can be found at
... See MoreSee Less

View on Facebook

It's too early to know if the upper keys will be impacted by Hurricane Dorian, but please take a moment to review your hurricane plans including what to do and who to call for wastewater related concerns. ... See MoreSee Less

View on Facebook

The Florida Department of Environmental Protection (DEP) and the Key Largo Wastewater Treatment District (KLWTD) are working together to respond to water quality concerns from Key Largo residents. Recently, DEP and the KLWTD received an influx of calls regarding a strong “sewage odor” in some residential canals, mainly on the oceanside of Key Largo and Tavernier. Working in collaboration with DEP, the KLWTD staff collected and tested water samples in canals, which did not show any evidence of sewage contamination. Rather, DEP Investigators observed large amounts of dead sargassum seaweed, which when decays inside the canal, may cause a sulfur gas odor and low dissolved oxygen levels. DEP is partnering with the Key Largo Wastewater Treatment District to address these concerns.

If you encounter fish that are either dead or in poor physical condition, please contact FWC’s toll-free Fish Kill Hotline at 1-800-636-0511.
... See MoreSee Less

View on Facebook

The District welcomes its newest Commissioner, Mr. Nick Rodriguez who was appointed during the Board of Commissioners meeting yesterday. ... See MoreSee Less

View on Facebook

Traffic delays are expected to occur at mile marker 93.0 due to damage to the Islamorada wastewater transmission main. The wastewater line is located in the middle of the highway and may affect north and southbound traffic.

Your patience is appreciated while crews work to make repairs.
... See MoreSee Less

View on Facebook

The sound from a conch shell horn concluded the final board meeting for Commissioner Steve Gibbs. Thank you for all you did for KLWTD and our community. We wish you the best on your next chapter. ... See MoreSee Less

View on Facebook

A wastewater transmission line at mile marker 92.5 broke Tuesday, March, 5th at approximately 10:30 AM then again at 10 PM. Repairs have been made to the force main line that transmits wastewater effluent from the Islamorada sewer system to the Key Largo Wastewater Treatment Plant. KLWTD system was unaffected by the problem. Long term solutions are being researched to prevent future breaks.

Northbound traffic on US 1 is reduced to one lane until the repairs are complete. Repairs should be completed, and the lane reopened by 5 PM. There are traffic delays northbound on US 1 that will continue throughout the day.

The lane closure begins near the Dairy Queen restaurant and ends at Burton Drive. Access to all businesses and residential streets are open.
... See MoreSee Less

View on Facebook

Severe weather including strong winds and flooding is expected to affect Key Largo and the Florida Keys over the next 24 to 48 hours. Please take necessary precautions to prepare and monitor the weather closely.

KLWTD's office will be open regular hours, however we're always available 24 hours a day at 305-451-4019. Please contact us if you're experiencing a back-up or problems with the wastewater system.

As a reminder, please do not tamper with the wastewater system. Anyone found tampering will be fined.
... See MoreSee Less

View on Facebook

Meeting & Events

September 2020

Sun Mon Tue Wed Thu Fri Sat
  • Holiday Closure - Labor Day

Our District

The District’s mission includes the introduction and operation of advanced wastewater treatment and disposal infrastructure to serve all residents and commercial operations on the unincorporated island of Key Largo.



Vacuum systems are completely contained and will continue to function normally …


Service Area

The District’s boundaries include the territory consisting of Key Largo, including …

Plant Aerial


KLWTD has won the prestigious Florida Department of Environmental Protection’s  …