Tour de Trash Logo

2007 City Livability Awards Winner
Sponsored by the U.S. Conference of Mayors
Honolulu is proud to be the recipient of an
Outstanding Achievement Award for Tour de Trash.

For 28 years this award has recognized mayoral leadership for developing and implementing programs that
improve the quality of life in America's cities.
Congratulations to all the participating businesses and waste/recycling companies that have contributed to the success of Tour de Trash.

FREE Tour Series

Tour Schedule/Registration
Virtual Tour
Costs and Sponsors
Custom Tours for School and Community Groups


Tour de Trash is in its 21st year, and those interested know they better reserve their seat quickly. Buses are usually fully booked within a couple weeks with long wait lists for each tour. It’s surprising how many people are interested in getting up-close and personal with our trash.

And that’s good, because we face some challenges in waste management and need to be knowledgeable in determining future directions. On an island, land is one of our most precious resources, and reducing our use of landfills is a critical goal of our waste management strategy. In order to move forward successfully with major recycling initiatives and alternative technologies, it’s imperative that we engage the public in intelligent discussion. Raising public awareness of our opala– through Tour de Trash, our website and other educational programs – helps to facilitate better public discussions and decision-making on recycling and waste management initiatives.

“How we manage our island’s waste today will affect generations to come. The more we know about systems and technology, the better equipped we are to develop and participate in programs at home and at work. Tour de Trash offers an opportunity to get an up-close look at the recycling and waste processing operations on Oahu and peek behind those “Employees Only” doors at island businesses that have instituted successful recycling programs. Now in its 15th year, Tour de Trash is an award-winning educational program. Get on board and learn more about the dynamic world of waste” – Kirk Caldwell, Mayor, 2013.

Oahu’s annual recycling rates have increased from approximately 160,000 tons in 1990 to more than 1.2 million tons today. Based on a total waste stream of 2.3 million tons annually, that’s a 52 percent recycling rate – well above the national average of 27-32 percent. Combined with waste-to-energy, Oahu’s landfill diversion rate is over 75 percent, again exceeding the national average of 41-44 percent.

There is more to accomplish, and the job gets tougher as we reach for higher diversion rates. Public awareness through programs such as Tour de Trash is critical to moving any new initiatives forward.

Tour de Trash is a collaborative event, coordinated by the City and supported by island businesses engaged in recycling at many levels.

2019 Tour Schedule/Registration

Tour de Trash is back for its 21st year!  Help us celebrate by coming out to one (or more) of this year's tours.

Register by phone: 768-3200.

Tour 1: Recyclers & Waste Processors
Date: Tuesday, April 16th, 2019
Time: 8:30am-1:00pm
Start/Finish: Kapolei Hale

The recyclers and waste processors tour follows the path of our opala from the blue, green, and gray carts to their respective sorting, composting, and waste-to-energy facilities.  This tour is a great introduction to the City’s main solid waste programs and starts off with a visit to the City’s H-POWER waste-to-energy facility, where all of Oahu’s trash is incinerated to generate electricity.  H-POWER is capable of processing up to one million tons of trash per year; providing Oahu with up to 10% of its electricity needs - 70 megawatts of power, or enough electricity to power 60,000 homes.  The tour also stops at RRR Recycling Services where all of the City's curbside blue cart material is received and processed.  Tour goers will follow the recycling stream through the elevated sort line and see how paper, plastic, metal, and glass are separated and prepared for shipping to overseas end users. At Hawaiian Earth Recycling (HER) participants will see how yard waste from the curbside green bins is recycled into mulch and compost.  HER staff will explain the science behind the composting process; from mulching and open air windrow management to screening and mixing their final product.  At Waimanalo Gulch Sanitary Landfill tour goers will learn about the environmental protections employed by today’s modern landfill including its complex liner, leachate catchment, and methane recovery systems. 

Tour 2: Wastewater Management
Date: Thursday, May 30th, 2019
Time: 8:30am-12:00pm
Start/Finish: Kapolei Hale

Follow the flush on the Wastewater Management tour to find out what happens to the water that’s washed down your sinks and toilets.  The tour visits the Honouliuli Wastewater Treatment Plant, where 25 million gallons of sewage per day are treated through screens, filters, and clarifiers which clean and separate liquids from solids.  The tour then travels to the Honouliuli Water Reclamation Facility, where the Board of Water Supply further processes the wastewater into cleaner water which can be used for irrigation.  Collection System Maintenance will provide a live on-site demonstration of how sewer pipes are serviced and maintained using a robotic Closed-Circuit TV camera and a Vactor truck.

Tour 3: Green Business
Date: Thursday, June 13th, 2019
Time: 8:30am-1:30pm
Start/Finish: Hawaii Convention Center- 1801 Kalakaua Ave.

On the Green Business tour, participants will get a behind the scenes look at the Hawaii Convention Center’s exemplary sustainability programs including food recovery and donation system, mixed material recycling collection system for offices and events, as well as the energy and water efficiency equipment and measures they've implemented throughout their facility. Gyotaku Japanese Restaurant will showcase how it captures food waste, which is recycled into animal feed, and used cooking oil, which is converted into bio-diesel.  Whole Foods Kahala will show off their recycling programs and sustainability initiatives, such as food donation, reusable shipping containers, and energy and water efficiency measures.

Businesses participating in this tour have received the Green Business Award from the Hawaii State Energy Office, Department of Business, Economic Development, and Tourism.  Learn more about these recognized businesses by visiting the Hawaii Green Business Awardees Page.

Tour 4: Reuse Tour (Brand new tour added in 2019!)
Date: Tuesday, July 23rd, 2019
Time: 8:30am-12:45pm
Start/Finish: Kapolei Hale

This new tour will feature organizations that are doing their part to reduce our waste at the source. Part of their work includes salvaging or accepting donations of construction material, tools, appliances, furniture and other home goods to be refurbished, resold and reused. Re-Use Hawaii is a nonprofit organization established in 2006 whose mission is to reduce waste through alternatives to demolition from public donations of building materials. They redistribute these materials to the community as an affordable resource. They also work to deconstruct instead of demolish buildings in order to salvage the reusable material. The Salvation Army is an international organization that came to Hawaii in the 1890s. Their mission is to aid in providing for the material, emotional and spiritual needs for those requiring assistance. At their headquarters, we will see how they provide housing and work for those in need, receive truck loads of donations from around the island, sort, refurbish, distribute to their other thrift stores and resell the items to help support their cause. Honolulu Habitat for Humanity is part of a global, nonprofit organization that seeks to eliminate substandard housing through constructing, rehabilitating and preserving homes. Their ReStore section is a home improvement store and donation center that sells new and gently used furniture, appliances, building materials and home accessories to the public at a fraction of the retail price. Proceeds raised at ReStore go towards supporting their mission of providing housing for those in need.

Tour 5: Construction & Demolition Recycling
Date: Thursday, August 22nd, 2019
Time: 8:30am-12:30pm
Start/Finish: Kapolei Hale

On the Construction and Demolition (C&D) Recycling tour, see how companies give C&D material a second life by transforming it into new usable forms.  Learn how Island Demo deconstructs buildings, recycles the metals, and cleans and grinds concrete to be used as aggregate.  West Oahu Aggregate recycles concrete, rock, and asphalt for resale and screens and converts dirt into topsoil.  At PVT Landfill, the majority of the incoming C&D waste is separated, processed for reuse or recycling.  Much of the waste at PVT Landfill is planned to be used as feedstock for a gasification process that will produce electricity.

Tour 6: Recyclers & Waste Processors (Discover Recycling Saturday event)
Date: Saturday, September 21st, 2019
Time: 8:30am-1:00pm
Start/Finish: Kapolei Hale

Same as Tour 1, but conveniently offered on a Saturday to make it easy for teachers and students to attend.  Others are welcome to join, however preference will be given to those in the education system.

At the conclusion of this tour, buses will return to Kapolei Hale where City recycling staff will be available for questions about the tour and discussion on the City’s solid waste management and associated educational programs.  Staff will have several of the City’s recycling educational resources available for distribution, including student activity books and recycling reminder stickers. 

Additional Tour Information:  Must be 12 years old to attend.  Under 18 years old must be accompanied by an adult. 

All tours, including site-to-site transportation, are FREE.  Space is limited and reservations are made on a first-come basis.  Please consider your reservation a binding agreement to attend.  A no-show is a seat we could have given to another participant.  Tour does not include lunch or refreshments.  Please bring water and/or snacks.

Keep in mind that the Tour de Trash is designed to give participants a behind-the-scenes look at some of Oahu’s largest and most dynamic recycling and waste processing facilities.  The sites may be dusty and dirty.  Some of the tours have participants climbing several flights of stairs, walking through narrow corridors and standing outside for extended periods of time. Please inquire with City Recycling Branch staff about the amount of physical activity involved in each tour.  

For tours 1, 2, 4, 5 and 6, please arrive at Kapolei Hale 15-20 minutes prior to departure.   Parking is free in the public lot or on the street.   For tour 3, please arrive at the Hawaii Convention Center 30 minutes before departure time.  Parking at the Convention Center will be validated. All tour buses depart promptly in the morning on schedule; tour end times are approximate. Tour sites are subject to change.  Call 768-3200 to register.  

The City is able to coordinate custom tours for school groups, solid waste advisory committees, technical associations, visiting professionals and other such groups. Custom tour participants must provide their own transportation.  Please call 768-3200 for more information.

Virtual Tour

Would you like to take a virtual Tour de Trash? Not quite the same as being there, but may help you decide if you would like to sign up for one or more of the tours.

The recycling and waste processing sites are most popular. People get to see the inner workings of the HPOWER waste-to-energy facility -- look into the furnace; peek into the RDF (refuse-derived fuel) room; see how metals are extracted from the mixed waste for recycling. They walk through a canyon of recycled paper bales at Island Recycling. They talk with the recycling facility managers, hear about their challenges, ask questions. They walk the sort line at Honolulu Recovery Systems, where the materials collected in their neighborhood recycling bins are sorted by commodity.

Just like tourists, they pose for pictures in front of the mountains of metal at Schnitzer Steel Hawaii and get free samples of compost at Hawaiian Earth Products.

A host of businesses take the tour groups back-of-the-house to show how they’ve instituted successful recycling programs – the Hard Rock Café, Hilton Hawaiian Village, Hawaii Convention Center are among the leaders. The Sheraton Waikiki shows off its mini MRF. Young Laundry demonstrates how it put a biodiesel fuel to work.

The facilities and businesses are proud to have this opportunity to showcase their operations to a local group of interested citizens. They know as well as the City, that educating our public about the challenges we face in waste management today will provide strong public support for the next directions.

Also, consider taking virtual tour with The Green Channel videos on our Youtube channel. Check out dozens of story titles including “Where’d Our Stuff Go?” about the journey of the materials in the blue carts; “Food For Worms,” about worm composting in schools; “Green Waste,” about Oahu’s green waste composting; “Great Waste, Less Filling,” about the Waimanalo Gulch Sanitary Landfill; “H-POWER;” and lots more!

Costs and Sponsors

Tour de Trash is FREE to the public. The tour includes round trip site-to-site bus transportation. Please follow all dress code, arrival times and check-in procedures specific to each event. Tour buses leave promptly at scheduled departure times. Tour sites are subject to change.

Tour guides on each bus are City Department of Environmental Services staff. Each participating tour site makes their facility available to the tour group for about an hour and provides in-house staff to conduct the tour and respond to questions.

Tour de Trash is promoted in of the City’s WasteLine e-newsletter and on the City’s website. City staff handles registration, planning and coordination.

The City supports the costs of the buses, tour guides, promotion, registration, planning and site coordination. The participating tour sites offer their facilities and staffing resources at no charge, and are considered sponsors and partners:

City Department of Environmental Services – Collection Systems Maintenance
Gyotaku Japanese Restaurant
H-POWER – Covanta Energy
Hawaii Convention Center
Hawaiian Earth Recycling
Honolulu Habitat for Humanity-ReStore
Honouliuli Wastewater Treatment Plant
Honouliuli Water Reclamation Facility-Board of Water Supply
Island Demolition
PVT Land Company
Re-Use Hawaii
RRR Recycling Services
The Salvation Army
Waimanalo Gulch Sanitary Landfill – Waste Management
West Oahu Aggregate
Whole Foods Kahala

Past tour sites include:
Access Information Management
AES Hawaii
Baseyard Hawaii Reuse Facility
City Board of Water Supply
City Department of Facilities Maintenance – Automotive Equipment Services
Fasi Municipal Building
Grace Pacific
Green Bed Factory
Hard Rock Café
Hickam Air Force Base
Honolulu Hale
Honolulu Recovery Systems
Honolulu Zoo
Hilton Hawaiian Village
Hyatt Regency Waikiki
Ihilani Hotel
Island Demo
Island Recycling
Island Shell
Kahala Hotel & Resort
Navy Biosolids Composting Facility
Pacific Biodiesel
Pacific Corporate Solutions
Queen’s Medical Center
Re-use Hawaii
Refrigerant Recycling
Sand Island Wastewater Treatment Plant
Schnitzer Steel Hawaii
Sheraton Waikiki Resort
Tripler Army Medical Center
Unitek Solvent Services
Young Laundry & Dry Cleaning


Tour de Trash is an outgrowth of the annual Partnership for the Environment education conferences the City coordinated since 1995. These conferences were developed to educate our business community about the benefits and how-to’s of implementing recycling into their waste management practices. The partners included business leaders from hotels, restaurants, building management, food and beverage industry, dry cleaning, media, and publishers, who had become experts in recycling and were willing to share their expertise with other businesses to help them get started or improve their existing recycling programs.

The conferences were full-day events held at local hotels. Workshops ran in breakout meeting rooms morning and afternoon, with an awards luncheon midday to recognize new members and outstanding recycling programs. The partners presented their programs in video, PowerPoint and display boards. And because each conference was held at a Partner hotel, the conference included a back-of-the-house tour of the hotel’s recycling operation.

People commented repeatedly on how they learned so much from the tour.

In 1998 when the Partner hotel site shifted out of Waikiki to the Leeward side of Oahu, where many of our recycling and waste processing operations are located, we saw an opportunity to introduce the conference attendees to a full morning of site visits to the landfill, waste-to-energy facility, composting facility, and metal recycling company. And at the end of the day, all we heard was how fabulous and educational the tour was.

We finally got it. Getting up-close and personal with trash and having the opportunity to speak with the managers onsite was far more vivid than watching it in a slide show.

In 1999 we launched the first Tour de Trash – an open house of all our Partner businesses and facilities. Instead of bringing our experts into a sterile workshop room to present their recycling programs, we loaded our attendees onto six buses and brought them to the Partners. Each bus toured different sites with particular industry focus – restaurant/hotel, workplace, recycled products, construction and demolition, recycling and waste processing – allowing attendees to gather as much information as possible in their area of interest.

The conference was now “all tour;” workshops were conducted on-site. The buses pulled out at 9:00 a.m. and returned around 4:00 p.m. when everyone gathered for a pau hana networking with drinks and pupus.

You would think the participants would be exhausted by a full day of trash, but as each bus unloaded, they strolled to the networking session talkative and bright-faced. They ate, drank and talked trash for a couple hours, and many of them returned the next year to take another tour.

Each year Tour de Trash has grown in popularity, beyond the business sector audience to a broad general public group, including college students, educators, senior citizens, military, state and other county government, and community leaders. The interest has been overwhelming. The 2002 tours fully booked in the first week of promotion – 300 filled our six bus tours with more than 500 on the wait list.

Call 768-3200 for registration.

© 2005 City & County of Honolulu's Department of Environmental Services.