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News & Events

May 8 - 10, 2019

WEF Stormwater and Green Infrastructure Symposium

Greg Williams, Managing Director, GHL, will be speaking on, Mass recovery versus grab sampling for measuring sediment removal by oil grit separators

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June 17-19, 2019


Greg Williams, Managing Director, GHL, will be presenting, Stormwater Technology Performance Verification

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August 12 - 16, 2018

StormCon 2018

GHL will be attending StormCon, the only North American event dedicated to stormwater and surface-water professionals.

For more info or to register

September 18, 2018

information bulletin

CETV Information Bulletin

Modification to Section 5.2 “Test Conditions – Light Liquid Re-entrainment Simulation Test” of the CETV Procedure for Laboratory Testing of Oil Grit Separators.

Click to view PDF

September 29 - October 3, 2018



Greg Williams, Managing Director, GHL, will be speaking at the SWEMA Breakfast Forum on Oct. 2, as well as a few other events. Click for more information on the event and where Greg will be speaking.

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June 15, 2018

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GHL is now PDI certified!

GHL is now able to test grease interceptors for compliance with the PDI-G101 standard.

Click for more info.

June 28, 2018


VerifiGlobal General Assembly Meeting

Greg will be attending the VerifiGlobal Alliance General Assembly Meeting

July 25-26, 2018


STEPP Meeting

GHL will be attending the National Stormwater Testing and Evaluation for Products and Practices (STEPP) Initiative Work Team meeting at the WEF headquarters.

November 17, 2017

New service offering from GHL

GHL is now offering SR&ED Tax incentive program services for all eligible product development testings.

Click for more information about the program and GHL’s service.


February 27, 2018

Greg will be presenting at the NSF

Greg will be presenting on Tuesday morning February 27th on “Testing 201: Gravity Grease Interceptors”

Click for more information about the NSF International’s FOG Prevention Conference.


April 12, 2018

Sarnia-Lambton Water Symposium

Greg will be attending and speaking on “Moving Forward with ISO 14034: Environmental Technology Verification”

For more info or to register

November 14, 2016

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Two New Stormwater Technologies Verified with ETV Canada by GHL

Our latest newsletter discussed about how GHL facilitated the ETV Canada verification for two different stormwater technologies as well as helped Bio Clean Environment Services to get their stormwater device, The Kraken, NJDEP Approved.


April 26, 2017

New Verified Stormwater Filtration System With NJDEP

AquaShield’s AquaFilter, a stormwater filtration system, has been officially certified by the State of New Jersey with the help of GHL.


September 25, 2017

Now a member of the ITRC

GHL is now a member of the Interstate Technology Regulatory Council (ITRC), a public-private coalition working to reduce barriers to the use of innovative air, water, waste, and remediation environmental technologies and processes.


October 18, 2016

WIA 2.0

Water Innovation in Action 2.0

Dr. Greg Williams will part of a panel of speakers on Tuesday, October 18 at 10am for “Success Stories: Tapping into the Ecosystem“, where he will share some of his recent success stories.


October 18-20, 2016

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World Water-Tech North America (WWTNA)

WWTNA will take place in Toronto, Ontario on October 18-20. Hosted by WaterTAP Ontario and Rethink Events and will focus on the role of advanced water and wastewater solutions in developing a low carbon economy.

October 28, 2016

verified stormwater technologies

New Verified Stormwater Technologies with CETV

GHL has help verified two stormwater technologies, the CB Shield and the Hydro International Downstream Defender with the Canadian Environmental Technology Verification (CETV)


September 6, 2016

Sep 6 newsletter

Grease Interceptor Manufacturers have a great new option available!

Great news for our grease interceptor manufacturers. We are now a recognized testing lab by the IAPMO R&T which means we are the only lab in Canada that can provide certified grease interceptor performance testing.

September 27, 2016

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SWEMA Breakfast Forum at WEFTEC 2016

GHL is proud to be one of the sponsors of this forum on Tuesday, September 27, 7am to 8:30am, Ernest N. Morial Convention Center, New Orleans. View agenda (PDF).


September 28, 2016

Greg at WEFTEC

WEFTEC Ingenuity Award 2016

Congratulations to Dr. Greg Williams, one of the winners of the WEFTEC Ingenuity Contest. He will be presenting his invention at WEFTEC on September 28 and you can read about it in an upcoming edition of Water Environment and Technology magazine.


December 11, 2015


An independent, qualified and unbiased testing organization

Learn about GHL and how we can help you to verified and certified your technology.

January 12, 2016

January 12 newsletter

We Are Now Accredited!

In this article we announce our new ISO:9001:2008 designation with the BSI Group.

March 29, 2016

March 29 newsletter

We Have a New Look!

GHL would like to share our new website design/layout which would be more user-friendly and aesthetically pleasing to our visitors.