City & County of Honolulu Department of Environmental Services

City & County of Honolulu Department of Environmental Services Official page of the City & County of Honolulu Department of Environmental Services

Welcome to the Official page of the City and County of Honolulu Department of Environmental Services. The purpose of this page is to provide updates on wastewater, refuse, recycling, and environmental quality. For complete information and history of the department, visit www.ENVHonolulu.org. The Mission of ENV is to protect public health and the environment by providing effective and efficient management of wastewater and solid waste disposal systems for the City and County of Honolulu. ENV is serious about its responsibility to lay the best plans for the future, while working within fiscal constraints of the present to educate the public on measures protecting the public health and the environment. Note: Any comments containing inappropriate content will be removed. Inappropriate content includes but is not limited to:
• Explicit, hostile, discriminatory, or harmful material
• Content violating copyright or legal ownership interests
• Encouragement of illegal activities
• Irrelevant material, spam, or marketing

The City and County of Honolulu does not officially endorse any referenced products or businesses. The purpose of any reference is to provide information on the city agency's programs.

Happy Aloha Friday! 🌺 Did you know the Honouliuli Wastewater Treatment Plant (WWTP) has been serving West Oʻahu for near...
10/10/2026

Happy Aloha Friday! 🌺

Did you know the Honouliuli Wastewater Treatment Plant (WWTP) has been serving West Oʻahu for nearly 50 years? 💧

Built in 1978, the Honouliuli WWTP plays an important role in Honolulu's wastewater system, serving communities from Hālawa to Makakilo, including ʻEwa, Kapolei, and Mililani.

Over the years, the facility has undergone major improvements to keep up with the needs of our growing communities. One of its biggest milestones was the completion of its full secondary treatment upgrade ahead of the June 2024 deadline!

The plant also incorporates sustainable technologies, including solar energy, biogas recovery, and systems that support recycled water use.

From treating wastewater to supporting a more sustainable future, the Honouliuli WWTP continues to play an important role in protecting Oʻahu's environment.

10/09/2026

Our ENVironment: Employee Spotlight 🎥

We’re continuing our Employee Spotlight video series, highlighting the dedicated ENV employees whose work makes a difference across Oʻahu.

Meet Kevin Walton, the Supervising Water Quality Technician with ENV’s Environmental Quality Division Ocean Team.

For Kevin, no two days on the ocean are the same. From shoreline and offshore monitoring to diving for sea urchins and collecting sediment samples, his team works to monitor water quality around Oʻahu.

Kevin and his team monitor waters near the City’s ocean outfalls and along the shoreline to help ensure water quality standards are being met.

One of Kevin’s favorite parts of the job is being out on the ocean, where he gets to experience beautiful sunrises, sunsets and even whales during the winter months.

For Kevin, the work is about more than just monitoring water quality. It’s about caring for the ocean and looking out for the people who call Oʻahu home.

Mahalo, Kevin, for your leadership, dedication and commitment to protecting Oʻahu’s waters! 🌊

Only 3 WEEKS left to apply for the CARES program!If you need help paying your sewer bill, there’s still time to apply fo...
10/08/2026

Only 3 WEEKS left to apply for the CARES program!

If you need help paying your sewer bill, there’s still time to apply for the City’s Customer Assistance and Relief for Environmental Services (CARES) program.

📄 Get an application:
Download an application at honolulu.gov/env/cares or pick one up at any Satellite City Hall or public library.

📬 Complete & submit:
Complete your application and include copies of all required tax documents. Then, mail it or drop it off at any ENV office.

⏰ Applications will be accepted through October 31, 2026.

Assistance is first come, first served while funds are available, so don’t wait to apply!

Learn more and download an application at honolulu.gov/env/cares.

🌱 G.R.O.W. is islandwide, Oʻahu! Residents with the City’s three-cart system can now include food scraps and wasted food...
10/07/2026

🌱 G.R.O.W. is islandwide, Oʻahu!

Residents with the City’s three-cart system can now include food scraps and wasted food in their green carts along with green waste.

As you G.R.O.W., remember to keep it loose — no bags or containers, including compostable bags. Keeping contaminants out helps turn our food and green waste into compost for use right here on Oʻahu.

Worried about odors or mess? Try freezing food waste until the night before or morning of collection, or use baking soda and coffee grounds to help with odors.

Learn more about the G.R.O.W. Program at honolulu.gov/env/grow

Meet Alan Nishimura, Water Quality Technician with ENV's Ocean Team!As part of our Employee Spotlight series, we’re high...
10/05/2026

Meet Alan Nishimura, Water Quality Technician with ENV's Ocean Team!
As part of our Employee Spotlight series, we’re highlighting the dedicated people who work behind the scenes to help protect Oʻahu’s environment and communities.

When asked what people might not know about his job, Alan shared:
“We’re trying to do everything for the public to make the water safer. We don’t just take water samples. We also scuba dive, take pictures and collect sediment samples. There’s a lot that we do that people don’t know about.”

Alan’s work goes far beyond collecting water samples. From monitoring shorelines to diving beneath the surface and collecting sediment samples, his work helps provide important information about water quality and supports efforts to keep the public informed.

After 22 years with ENV, Alan has also seen firsthand how technology and improvements at wastewater treatment plants have changed the work he does and contributed to cleaner water.

Mahalo, Alan, for your many years of service to ENV and for the work you do to help protect Oʻahu’s waters and our community!

Starting Monday 10/5, traffic will be affected as City contractors conduct work between the hours of 8:30 am and 3:30 pm...
10/04/2026

Starting Monday 10/5, traffic will be affected as City contractors conduct work between the hours of 8:30 am and 3:30 pm (or *8:00 pm and 6:00 am).

Dates and locations of work are provided in this post.

All 7 of the City and County of Honolulu’s Convenience Centers and the Kapaʻa and Kawailoa Transfer Station accepts the ...
10/03/2026

All 7 of the City and County of Honolulu’s Convenience Centers and the Kapaʻa and Kawailoa Transfer Station accepts the following types of compressed gas items listed below. Keehi Transfer Station does not accept compressed gas items.

Please dispose of compressed gas items in the designated compressed gas area only. Do not dispose in the metal bin. If unsure of the location, as the facility’s security guard.

The City and County of Honolulu accepts the following types of compressed gas items:

• Propane Tanks (20 lbs. – 100 lbs.) - commonly used as a fuel source for gas grills.
• Propane Cylinders (1 lb.) – commonly used for portable stoves.
• Butane Cylinders (8 oz.) – commonly used for portable stoves.
• MAPP Gas Cylinders (14 oz.) - used as a fuel source for hand torches for soldering.
• Refrigerant Tanks – used to refill refrigerant.
• Fire Extinguishers – ABC (common household) type only.
• Helium Tanks (14.9 cu. ft.) – to inflate balloons.
• CO2 Cylinders – Used for soda carbonation or to propel am******on in airsoft/paintball guns.

All commercial grade compressed gas tanks are prohibited, including but not limited to the following:

• Acetylene Tanks
• Oxygen Tanks
• Scuba Tanks
• Other Industrial Tanks

Please feel free to call us at (808) 768 – 3200 x 6 or email us at [email protected] with any questions.

Happy Aloha Friday 🌺ENV had a splashin' time today at the Make a Splash event at Pearl Harbor Elementary School!The hand...
10/03/2026

Happy Aloha Friday 🌺

ENV had a splashin' time today at the Make a Splash event at Pearl Harbor Elementary School!

The hands-on water education festival brought students, educators and environmental groups together for games, demonstration and experiments focused on water quality, stormwater pollution, watersheds, recycling, drinking water and protecting Hawaiʻi natural resources.

Our Recycling Branch put students' sorting skills to the test with an ʻŌpala sorting relay race, while our Environmental Quality Division taught students about what happens to wastewater after it leaves their homes and what happens when the system is overwhelmed — through a game of Super Bowl Surge.

Mahalo to for putting together the event and to Pearl Harbor Elementary School for having us!

Effective October 1, 2026, through January 31, 2027, ENV will not offer gray cart monitoring or process requests for add...
10/02/2026

Effective October 1, 2026, through January 31, 2027, ENV will not offer gray cart monitoring or process requests for additional carts.

Requests for cart repairs or replacements and stolen carts will still be accepted during this period.

Additional cart requests will resume February 1, 2027.

For more information about refuse collection and cart services, visit honolulu.gov/opala.

Mahalo for your understanding.

10/01/2026

TODAY’S THE DAY! 🌱 G.R.O.W. is now islandwide!

Any household with the City’s three-cart system can now place food scraps and wasted food in their green compost cart to be turned into nutrient-rich compost.

Remember, no bags — loose food scraps only! Just add your food scraps directly into your green cart along with your green waste.

For more information, helpful tips and everything you need to know about how to participate, visit honolulu.gov/env/grow.

Let’s get G.R.O.W.ing, Oʻahu! 🌱

Address

91-2060 Franklin D. Roosevelt Avenue, Suite 220
Kapolei, HI
96707

Opening Hours

Monday 7:45am - 4:30pm
Tuesday 7:45am - 4:30pm
Wednesday 7:45am - 4:30pm
Thursday 7:45am - 4:30pm
Friday 7:45am - 4:30pm

Telephone

+18087683454

Website

Alerts

Be the first to know and let us send you an email when City & County of Honolulu Department of Environmental Services posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to City & County of Honolulu Department of Environmental Services:

Shortcuts

Share

Category