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Our Story

The challenges have changed. So have we.

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Innovation

Seeing the full system and improving it.

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Our commitments

Driving long-term value through responsible delivery.

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Locations

Explore our locations across the U.S., Canada and Australia.

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Featured Solutions

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Emergency Response

Building readiness for decisive environmental action.

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Stack Testing

Accurate, EPA-compliant stack testing for industrial facilities.

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Leak Detection

Managing fugitive emissions in complex industrial facilities.

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Contact Laboratory Services

Request a quote for advanced laboratory analysis and support.

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Our Thinking Spotlight

The Onterris Outlook Report
NEW REPORT

The Onterris Outlook: Why Environmental Performance Is Business-Critical

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BRIEF

Federal Methane Rules in 2026: What Oil and Gas Operators Need to Do Now

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PERSPECTIVE

CCL 6 Is a Signal, Not a Standard. Why a Science-Forward Strategy Matters Now

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BRIEF

The HON MACT Rule: Shifting Compliance Monitoring to Emissions Intelligence

Culture & Careers
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Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
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Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
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Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
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Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
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Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.
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Our Locations

Our Locations

United States & Canada

Australia

Corporate Headquarters

Onterris, Inc.
5120 Northshore Drive
North Little Rock, AR 72118
+1 501.900.6400

Our lab locations

Click to jump to country.

United States | Canada | Australia

U.S. Locations

Albuquerque

9100 2nd St. NW, Suite 200

Albuquerque, NM 87114

+1 505.830.9680

Anaheim

2532 E. Cerritos Ave.

Anaheim, CA 92806

+1 714.771.6900

Antioch

2825 Verne Roberts Circle

Antioch, CA 94509

+1 501.900.6400

Arvada

5601 Olde Wadsworth Blvd.

Arvada, CO 80002

+1 501.900.6400

Arvada

6270 Joyce Drive, Unit B

Arvada, CO 80004

+1 501.900.6400

Atlanta

400 Northridge Road, Suite 400

Atlanta, GA 30350

+1 404.315.9113

Auburn

4150 B St. NW 105, 106

Auburn, WA 98001

+1 253.480.3800

Austin

2201 Denton Drive, Suite 111

Austin, TX 78758

+1 507.822.5661

Bakersfield

19479 Creek Rd.

Bakersfield, CA 93314

+1 501.900.6400

Baton Rouge

625 Highlandia Drive

Baton Rouge, LA 70810

+1 225.753.1115

Beaverton

8625 Southwest Cascade Ave., Suite 430

Beaverton, OR 97008

+1 501.900.6400

Bellingham

1325 Meador Ave.

Bellingham, WA 98229

+1 509.279.8947

Bethlehem

252 Brodhead Road

Bethlehem, PA 18017

+1 610.559.8776

Brecksville

10060 Brecksville Rd.

Brecksville, OH 44141

+1 440.262.3760

Bridgeville

412 Darby St., Suite 1-3, 5-8, 2nd Floor

Bridgeville, PA 15019

+1 713.542.3167

Carrollton

2430 Lacy Lane, Suite 120

Carrollton, TX 75006

+1 214.529.5829

Charlotte

4340 Taggart Creed Rd., Suite C

Charlotte, NC 28208

+1 804.358.8295

Charlottesville

1006 E. Jefferson St.

Charlottesville, VA 22902

+1 434.293.4039

Deer Park

314 Deerwood Glen Drive

Deer Park, TX 77536

+1 713.946.6222

Denver

1536 Wynkoop St.

Denver, CO 80202

+1 501.900.6400

Denver

1725 W. Elk Place

Denver, CO 80211

+1 303.433.1322

Durham

800 Capitola Drive

Durham, NC 27713

+1 919.850.4392

El Dorado Hills

1104 Windfield Way

El Dorado Hills, CA 95762

+1 916.673.1520

Elgin

2451 Technology Drive, Suite 408

Elgin, IL 60124

+1 501.900.6400

Elk Grove

1802 Brummel Ave.

Elk Grove, IL 60007

+1 501.900.6400

Elko

147 Idaho St.

Elko, NV 89801

+1 501.900.6400

Emeryville

5900 Hollis St., Suite L

Emeryville, CA 94608

+1 510.486.0900

Evans

3805 Carson Ave.

Evans, CO 80620

+1 949.491.2931

Flowood

660 Lakeland East Drive, Suite 107

Flowood, MS 39232

+1 601.351.5515

Freeport

1744 W. Fourth St., Suite 204

Freeport, TX 77541

+1 504.308.1367

Fuquay-Varina

208 Technology Park Ln., Suite 110

Fuquay-Varina, NC 27526

+1 501.900.6400

Houston

208 Deerwood Glen Dr.

Houston, TX 77536

+1 501.900.6400

Houston

20465 State Hwy 249, Suite 300

Houston, TX 77070

+1 281.664.2490

Irvine

4 Park Plaza, Suite 790

Irvine, CA 92614

+1 949.988.3500

Jefferson

119 Causeway Blvd.

Jefferson, LA 70121

+1 501.801.8500

Kemah

2000 Anders Lane

Kemah, TX 77565

+1 281.535.2834

Knoxville

8331 E. Walker Springs Lane, Suite 402

Knoxville, TN 37923

+1 865.367.7590

Long Beach

5500 E. Atherton St.

Long Beach, CA 90815

+1 562.799.9866

Loveland

1880 Fall River Drive, Suite 120

Loveland, CO 80538

+1 970.302.3382

Loveland

471 N. Denver Ave.

Loveland, CO 80537

+1 501.900.6400

Mt. Pleasant

2625 Denison Drive

Mt. Pleasant, MI 48858

+1 989.772.5088

Nashville

207 Donelson Pike

Nashville, TN 37214

+1 615.889.6888

Newport Beach

2901 W. Coast Hwy.

Newport Beach, CA 92663

+1 949.497.0931

North Hollywood

7411 Laurel Canyon Blvd., Unit 8

North Hollywood, CA 91605

+1 714.771.9904

North Little Rock

5110 Northshore Dr.

North Little Rock, AR 72118

+1 501.900.6400

North Little Rock

5120 Northshore Dr.

North Little Rock, AR 72118

+1 501.801.8500

Oakland

1 Kaiser Plaza, Suite #340

Oakland, CA 94612

+1 510.899.4503

Orange

931 W. Barkley Ave.

Orange, CA 92868

+1 714.771.6900

Orlando

9400 Southpark Center Loop

Orlando, FL 32819

+1 407.629.8180

Pasadena

177 E. Colorado Blvd.

Pasadena, CA 91105

+1 501.900.6400

Pelham

30 Monroe Drive

Pelham, AL 35214

+1 501.900.6400

Phoenix

3001 S. 35th St., C2

Phoenix, AZ 85040

+1 480.423.7240

Pine Brook

45 Route 46, #601

Pine Brook, NJ 07058

+1 973.575.2555

Pittsburgh

1050 William Pitt Way

Pittsburgh, PA 15238

+1 412.826.3636

Plant City

2007 Wood Court

Plant City, FL 33563

+1 501.900.6400

Portland

125 Industrial Way

Portland, ME 04103

+1 207.383.6529

Portland

13585 NE. Whitaker Way

Portland, OR 97230

+1 503.255.5050

Richmond

1941 Reymet Rd.

Richmond, VA 23237

+1 804.358.8295

Roanoke

5075 Hollins Road

Roanoke, VA 24019

+1 540.265.1987

Rochester

100 S. Clinton Ave.

Rochester, NY 14604

+1 501.900.6400

Robbinsville

500 Horizon Drive, Suite #540

Robbinsville, NJ 08691

+1 609.890.7277

Royal Oak

4949 Fernlee Ave.

Royal Oak, MI 48073

+1 248.548.7980

Sacramento

4630 Northgate Blvd., Suite 150

Sacramento, CA 95834

+1 916.537.6094

San Diego

4340 Vandever Ave.

San Diego, CA 92120

+1 858.321.7177

San Diego

2275 Rio Bonito Way, Suite 390

San Diego, CA 92108

+1 501.900.6400

Santa Ana

1631 E. St. Andrew Place

Santa Ana, CA 92705

+1 714.282.8240

Santa Maria

2015 Preisker Lane, Suite C

Santa Maria, CA 93455

+1 805.732.5454

Saratoga

116 W. Bridge St. E.

Saratoga, WY 82331

+1 307.326.3237

Seabrook

28 Collins

Seabrook, NH 3874

+1 978.302.6128

Spanish Fork

623 S. 3600 W.

Spanish Fork, UT 84660

+1 501.900.6400

Spanish Fork

6823 S. 3600 W.

Spanish Fork, UT 84660

+1 801.794.2950

Tampa

5911 Breckenridge Parkway

Tampa, FL 33610

+1 813.623.1557

Tampa

2109 N 40th Street

Tampa, FL 33605

+1 501.900.6400

Valley Forge

1140 Valley Forge Rd.

Valley Forge, PA 19482

+1 610.935.5577

Ventura

3639 Harbor Blvd., Suite 203 D

Ventura, CA 93001

+1 805.644.8810

Watkinsville

1120 Industrial Dr.

Watkinsville, GA 30677

+1 706.621.2383

Wauconda

951 Old Rand Road 102

Wauconda, IL 60084

+1 501.900.6400

Wilmington

5341 Limestone Road

Wilmington, DE 19808

+1 302.234.4400

Wilmington - Laboratory

2712 - 2714 Exchange Drive

Wilmington, NC 28405

+1 910.212.5858

Wilmington - Consulting

8048 Market St.

Wilmington, NC 28411

+1 501.900.6400

Windsor

1000 Champion Dr.

Windsor, CO 80550

+1 501.900.6400

Canada Locations

Click here to explore Onterris solutions in Canada

Calgary

Unit 200

214 11 Ave. Southwest

Calgary, AB T2R 0K1

+1 403.237.0606

Calgary

Unit 260

4311 12 St. Northeast

Calgary, AB T2E 6L1

+1 501.900.6400

Cold Lake



611 Lakeshore Drive

Cold Lake, AB T9M 1B1

+1 780.594.8103

Edmonton



9956 67 Ave. Northwest

Edmonton, AB T6E 0P5

+1 780.462.4099

Edmonton



13804 164 St. Northwest

Edmonton, AB T5V 1N8

+1 780.434.0400

Fort St. John



11312 100 Ave.

Fort St. John, BC V1J 1Z9

+1 250.785.7833

Grande Prairie



9502 118 St.

Grande Prairie, AB T8W 0M1

+1 780.532.9779

Guelph

Unit 7B

650 Woodlawn Road

Guelph, ON N1K 1B8

+1 519.772.3777

Kindersley

Unit 3A

1319 11 Avenue West

Kindersley, SK S0L 1S2

+1 306.463.2190

Lloydminster

Unit 102A

1625 50 Ave.

Lloydminster, SK S9V 2H3

+1 306.825.6900

London



350 Ridout St. South

London, ON N6C 3Z5

+1 519.772.3777

Medicine Hat



26 Boundary Road Southeast

Medicine Hat, AB T0J 2P0

+1 403.526.0650

Oakville

Unit 100

2265 Upper Middle Road East

Oakville, ON L6H 0G5

+1 905.877.9531

Point Edward



704 Mara St.

Point Edward, ON N7V 1X4

+1 519.336.4101

Swift Current

Unit 2

505 North Service Road West

Swift Current, SK S9H 4Y9

+1 306.773.3009

Virden




121 Tiger Moth Road

Virden, MB R0M 2C0

+1 204.748.3256

Weyburn




1780 Railway Ave.

Weyburn, SK S4H 2K1

+1 306.842.3088

Australia Locations

Click here to explore Onterris solutions in Australia

Adelaide

Suite 1C, Level 1,

70 Light Square,

Adelaide SA 5000

+61 1800.779.363

Alice Springs

Desert Knowledge Precinct

90 Heath Road

Kilgariff NT 0873

+61 8.8981.1100

Brisbane

Level 3,

95 North Quay

Brisbane City QLD 4000

+61 1800.779.363

Cairns


36 Abbott Street

Cairns City QLD 4870

+61 1800.779.363

Darwin


70 Cavenagh Street

Darwin City NT 0800

+61 8.8981.1100

Geelong

West 6,

33 Mackey Street

Geelong VIC 3152

+61 1800.779.363

Heatherbrae

Unit 3,

31 Camfield Drive

Heatherbrae NSW 2324

+61 1800.779.363

Melbourne

Level 2,

696 Bourke Street,

Melbourne VIC 3000

+61 1800.779.363

Mudgee

Level 1, Town Hall Arcade,

Byron Place,

Mudgee NSW 2850

+61 1800.779.363

Newcastle

Level 2,

180 King Street

Newcastle NSW 2300

+61 1800.779.363

Sydney

Suite 1, Level 7,

1 York Street,

Sydney NSW 2000

+61 1800.779.363

Tomago

Unit 4,

3 McIntyre Road

Tomago NSW 2322

+61 1800.779.363

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Sectors

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