Events

Please join us for an exclusive walking tour focused entirely on the Future Secondary Treatment – Phase 1 project at the Sand Island Wastewater Treatment Plant. This is a unique opportunity to explore the advanced upgrades transforming Oʻahu's largest wastewater treatment facility!

Limited spots available! Please register now via Google Form: Sand Island Wastewater Treatment Plant Walking Tour

                         Join us for a morning of making a difference followed by some serious fun in the sun!

When & Where:
Saturday, August 2, 2025
 - Beach Cleanup: 9:00 AM - 11:30 AM
 - BBQ: 11:30 AM - 2:00 PM
 - Location: Magic Island, Ala Moana Beach Park

What to Expect:
Morning Mission: Help us keep our beautiful coastline clean! We'll provide gloves, trash bags, and pickup tools. Just bring yourself, sunscreen, and a
water bottle.
Afternoon Feast: After our cleanup heroes deserve a reward! Food and beverages will be provided. Plus, music and good vibes.

What We'll Provide:
 - All cleanup supplies
 - Food & drinks

What to Bring:
 - Water bottle & sunscreen
 - Comfortable clothes you don't mind getting sandy
 - Chairs or beach mats
 - Appetite for fun!

Can't make the cleanup? No worries! Join us for the BBQ portion starting at 11:30 AM.

Let's make our beach beautiful and then celebrate together.

Please sign up via Google Form: HWEA/AWWA YP - Magic Island Clean-Up & BBQ

2025-2026 HWEA Annual Sponsorship 

Mahalo for your interest as an HWEA Annual Sponsor! We are extremely appreciative of your contribution and support of HWEA. 

Join us for this year’s annual Imagine A Day Without Water event, on Saturday, September 20, 2025, at Windward Mallʻs Center Court.

Explore 20+ interactive booths hosted by city, state, and local organizations—packed with hands-on activities, educational games, and eye-opening exhibits.

Check out the following:

• Rain Barrel Workshop – Learn how to harvest rainwater and take home tips for sustainable living
• Nalo Meli Maoli " Yellow-Faced Bees" keiki activity.
• Prize Giveaways – Including a chance to win a 45-gallon rain barrel!

Bring your family and friends to this free community event.

Event Details:
Date: Saturday, September 20, 2025
Time: 10 AM – 2 PM
Location: Windward Mall (Center Court)

Learn More: Imagine A Day Without Water Event - Board of Water Supply

 2025 WEFTEC Pau Hana

Are you attending WEFTEC 2025 in Chicago, Il?

The Hawaii Water Environment Association (HWEA) is excited to invite you to our WEFTEC Pau Hana on Sunday, September 28th from 5:00 PM to 7:00 PM at Ace Bounce (230 N. Clark Street)! 

Registration:

• HWEA Member: $20
• Non-Member: $30

RSVP by September 19, 2025! Hope to see you there!

Sponsorship Opportunities: 

Sponsorship selections are available through the Register (Individual) page.

*Only 1 diamond level sponsor allowed.

FOR OFFLINE PAYMENTS, please make check payable to HWEA.

Mail Check to:
HWEA
P.O. Box 2422
Honolulu, HI 96804

Refund Policy:
All cancellation requests must be made by emailing This email address is being protected from spambots. You need JavaScript enabled to view it. by September 30, 2025. Requests must be made by the deadline specified below to receive the refund amount of the registration order. Registrations paid by credit card are subject to a 5% fee for cancellations.