90 Certified Water Testing Labs in Maryland

90 laboratories from Maryland Department of the Environment's certified-laboratory list, 40 of them located in Maryland. Compare the ones near you on phone number, certificate number and certified scope before you send a sample.

40 certified laboratories located in Maryland

Across 28 cities. Closest is usually cheapest: most labs need the sample within 24-30 hours of collection, and courier or overnight shipping is billed on top of the test.

Aberdeen, Maryland (2)

ABERDEEN ADVANCED WASTEWATER TREATMENT PLANT LABORATORY

361 Michael Lane
Aberdeen, MD 21001

(410) 272-2650

Certificate G-1002

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

COMMUNITY ENVIRONMENTAL LABORATORIES, INC

1202 Technology Drive, Suite F
Aberdeen, MD 21001

Phone number not published in the state directory

Certificate 255

Inorganics 1, 2Micro 4

Listed in mde.maryland.gov, read 2026-09-20

Annapolis, Maryland (2)

HOME LAND LABS - ANNAPOLIS

108 Old Solomons Island Road, #L2
Annapolis, MD 21401

(410) 224-4304

Certificate 106

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

WATER TESTING LABS OF MD - ANNAPOLIS

1993 Moreland Parkway, Suite 201
Annapolis, MD 21401

(410) 643-7711

Certificate 134

Micro 4

Listed in mde.maryland.gov, read 2026-09-20

Baltimore, Maryland (7)

ASHBURTON WATER QUALITY LABORATORY

3001 Druid Park Drive
Baltimore, MD 21215

Phone number not published in the state directory

Certificate G-1006

Inorganics 1, 2, 3Micro 1, 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

BALTIMORE COUNTY BUREAU OF UTILITIES ENGINEERING & REGULATION LAB

4419 Bucks School House Road
Baltimore, MD 21237

Phone number not published in the state directory

Certificate G-1050

Inorganics 1, 2, 3Metals 1, 2THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

MARTEL LABORATORIES JDS, INC

1025 Cromwell Bridge Road
Baltimore, MD 21286

Phone number not published in the state directory

Certificate 107

HAA5Inorganics 1, 2, 3Metals 1, 2Micro 3, 4, 5THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

MARYLAND SPECTRAL SERVICES, INC

1500 Caton Center Drive, Suite G
Baltimore, MD 21227

Phone number not published in the state directory

Certificate 153

HAA5Inorganics 1, 2, 3Metals 1, 2SOC 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

MICROBAC LABORATORIES, INC - BALTIMORE

2101 Van Deman Street
Baltimore, MD 21224

Phone number not published in the state directory

Certificate 109

Inorganics 1, 2Metals 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

MONTEBELLO WATER QUALITY LABORATORY

3901 Hillen Road
Baltimore, MD 21218

Phone number not published in the state directory

Certificate G-1017

Inorganics 1, 2, 3Micro 1, 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

PHASE SEPARATION SCIENCE, INC

6630 Baltimore National Pike
Baltimore, MD 21228

Phone number not published in the state directory

Certificate 179

Inorganics 1, 2, 3, 5Metals 1, 2THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

Beltsville, Maryland (1)

EMSL ANALYTICAL, INC - BELTSVILLE

10752 Baltimore Avenue
Beltsville, MD 20705

(301) 937-5700

Certificate 305

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Forest Hill, Maryland (1)

HOME LAND LABS - FOREST HILL

2216 Commerce Road, Suite 2A
Forest Hill, MD 21050

(443) 969-1649

Certificate 370

Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Frederick, Maryland (2)

CITY OF FREDERICK WATER QUALITY LABORATORY

100 Treatment Plant Road
Frederick, MD 21701

(301) 600-1473

Certificate G-1016

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

FREDERICK COUNTY DIVISION OF WATER & SEWER UTILITIES LABORATORY

7400 Marcies Choice Lane
Frederick, MD 21704

Phone number not published in the state directory

Certificate G-1044

HAA5, THMsInorganics 1, 2Metals 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Freeland, Maryland (1)

AQUA LABS, LLC

21429 York Road
Freeland, MD 21053

Phone number not published in the state directory

Certificate 368

Inorganics 1, 2Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Hagerstown, Maryland (1)

CITY OF HAGERSTOWN DW LABORATORY

1 Clean Water Circle
Hagerstown, MD 21740

(301) 739-8577

Certificate G-1053

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Halethorpe, Maryland (1)

NAN TECHNOLOGIES, INC

1550 Caton Center Drive, Suite #M (Front)
Halethorpe, MD 21227

(410) 800-4263

Certificate 360

Metals 1, 2

Listed in mde.maryland.gov, read 2026-09-20

Lanham, Maryland (1)

AMA ANALYTICAL SERVICES, INC

4475 Forbes Boulevard
Lanham, MD 20706

(301) 459-2640

Certificate 262

AsbestosMetals 1

Listed in mde.maryland.gov, read 2026-09-20

LaPlata, Maryland (1)

MATTAWOMAN WATER QUALITY LAB Charles County Dept of Utilities

5310 Hawthorne Road
LaPlata, MD 20646

Phone number not published in the state directory

Certificate G-1033

Inorganics 1, 2Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

Laurel, Maryland (1)

AMERICAN WATER LABORATORY - FORT MEADE

3220 Laurel Fort Meade Road
Laurel, MD 20724

(301) 289-7027

Certificate 342

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

Lexington Park, Maryland (1)

ST. MARY'S METCOM DW LAB - LEXINGTON PARK (new lab as of 5/9/2024)

48020 Pine Hill Run Road
Lexington Park, MD 20653

(301) 737-7400

Certificate G-1055

Micro 4

Listed in mde.maryland.gov, read 2026-09-20

Millersville, Maryland (1)

ANNE ARUNDEL COUNTY UTILITIES CENTRAL LAB

437 Maxwell Frye Road
Millersville, MD 21108

Phone number not published in the state directory

Certificate G-1005

Metals 1Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

Myersville, Maryland (1)

FREDERICKTOWNE LABS, INC

3020 Ventrie Court
Myersville, MD 21773

Phone number not published in the state directory

Certificate 116

Inorganics 1, 2, 3Metals 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Oakland, Maryland (1)

DEEP CREEK LAKE LABORATORY

762 Mayhew Inn Road
Oakland, MD 21550

(301) 387-6162

Certificate G-1035

Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Ocean City, Maryland (1)

TOWN OF OCEAN CITY LABORATORY SERVICES

6405 Seabay Drive
Ocean City, MD 21842

Phone number not published in the state directory

Certificate G-1027

Inorganics 1Micro 1, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Perryman, Maryland (1)

SOD RUN WASTEWATER LABORATORY

1212 Chelsea RD
Perryman, MD 21130

(410) 273-5617

Certificate G-1030

Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Salisbury, Maryland (2)

GEOSCOPE ENVIRONMENTAL LABORATORIES, INC

1019 North Division Street
Salisbury, MD 21801

(410) 334-6496

Certificate 326

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

WATER TESTING LABS OF MD - SALISBURY

113 High Street
Salisbury, MD 21801

(410) 546-1318

Certificate 104

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Savage, Maryland (1)

HOWARD COUNTY GOVERNMENT - LITTLE PATUXENT WATER RECLAMATION PLANT

8900 Greenwood Place
Savage, MD 20763

(410) 313-1210

Certificate G-1045

Micro 4

Listed in mde.maryland.gov, read 2026-09-20

Silver Spring, Maryland (1)

WASHINGTON SUBURBAN SANITARY COMMISSION LABORATORY DIVISION (WSSC)

12245 Tech Road
Silver Spring, MD 20904

Phone number not published in the state directory

Certificate G-1049

HAA5HerbicidesInorganics 1, 2, 3Metals 1, 2Micro 3, 4, 5Pesticides 1, 2+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

Stevensville, Maryland (2)

CHESAPEAKE ENVIRONMENTAL LABORATORY, INC

302 Love Point Road
Stevensville, MD 21666

Phone number not published in the state directory

Certificate 181

ArsenicInorganics 1, 2, 3Metals 1Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

WATER TESTING LABS OF MD - STEVENSVILLE

1000 Butterworth Court
Stevensville, MD 21666

Phone number not published in the state directory

Certificate 214

Inorganics 1, 2, 3Metals 1, 2Micro 1, 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Sykesville, Maryland (1)

ADVANCED ENVIRONMENTAL CONCEPTS, INC

5201 Holniker Drive
Sykesville, MD 21784

(410) 939-5550

Certificate 333

THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

Thurmont, Maryland (1)

CERTIFIED WATER TESTING, LLC

15009 North Franklinville Road
Thurmont, MD 21788

Phone number not published in the state directory

Certificate 135

Inorganics 1, 2Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Towson, Maryland (2)

CALIBER ANALYTICAL SERVICES, LLC

8851 Orchard Tree Lane
Towson, MD 21286

(410) 825-1151

Certificate 320

Metals 1, 2THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

HOME LAND LABS - TOWSON

1220 East Joppa Road, Building C, Suite #505
Towson, MD 21285

Phone number not published in the state directory

Certificate 365

Inorganics 1, 2Metals 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Waldorf, Maryland (1)

HOME LAND LABS - WALDORF

3430 Rockefeller Court
Waldorf, MD 20602

Phone number not published in the state directory

Certificate 139

Inorganics 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Westminster, Maryland (1)

FOUNTAIN VALLEY ANALYTICAL LABORATORY, INC

1413 Old Taneytown Road
Westminster, MD 21158

Phone number not published in the state directory

Certificate 133

Inorganics 1, 2, 3Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Williamsport, Maryland (1)

WASHINGTON COUNTY DIVISION OF ENVIRONMENTAL MANAGEMENT LABORATORY

16232 Elliott Parkway
Williamsport, MD 21795

Phone number not published in the state directory

Certificate G-1025

Inorganics 1, 2, 3Metals 1Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

50 more Maryland-certified laboratories located in another state

Maryland certifies these laboratories, but they are not in Maryland. They mail you a kit and you ship the sample back, so turnaround includes transit both ways.

EUROFINS EATON ANALYTICAL - POMONA (formerly Eurofins Eaton Analytical-Monrovia)

941 Corporate Center Drive
Pomona, CA 91768

Phone number not published in the state directory

Certificate 224

HAA5HerbicidesInorganics 1, 2, 5Metals 1, 2, UraniumMicro 3, 4Pesticides 1, 2, 3, 5, 6, 7+2 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

MICROBAC LABORATORIES, INC - DAYVILLE

61 Louisa Viens Drive
Dayville, CT 06241

Phone number not published in the state directory

Certificate 349

HAA5HerbicidesInorganics 1, 2, 3, 5Metals 1, 2, UraniumPesticides 1, 2, 3, 4, 5, 7SOCs 1, 3+2 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

BATTA LABORATORIES, LLC Delaware Industrial Park

6 Garfield Way
Newark, DE 19713

(302) 737-3376

Certificate 263

Asbestos

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - ORMOND BEACH

8 East Tower Circle, Ormond Beach, Florida 32174
FL

Phone number not published in the state directory

Certificate 346

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2, UraniumMicro 3, 4Pesticides 1, 2, 3, 4, 5, 6, 7+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

FLORIDA RADIOCHEMISTRY SERVICES, INC

5456 Hoffner Avenue, Suite 201
Orlando, FL 32812

Phone number not published in the state directory

Certificate 278

Gross alpha, Gross beta, Radium 226, Radium 228, Uranium

Listed in mde.maryland.gov, read 2026-09-20

KNL ENVIRONMENTAL TESTING, LLC

3202 North Florida Avenue
Tampa, FL 33603

Phone number not published in the state directory

Certificate 283

Gross alpha, Gross beta, Radium 226, Radium 228, Uranium

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS - SAVANNAH (formerly Eurofins TestAmerica - SAVANNAH)

5102 LaRoche Avenue
Savannah, GA 31404

Phone number not published in the state directory

Certificate 250

Inorganics 1, 2, 3, 5Metals 1, 2Pesticides 1, 2, 3, 6, 7SOCs 3

Listed in mde.maryland.gov, read 2026-09-20

AMERICAN WATER LABORATORY - BELLEVILLE

1115 South Illinois Street
Belleville, IL 62220

Phone number not published in the state directory

Certificate 112

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2Pesticides 1, 2, 3, 4, 5, 6, 7SOCs 1, 3+2 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS EATON ANALYTICAL, LLC - SOUTH BEND

110 South Hill Street
South Bend, IN 46617

Phone number not published in the state directory

Certificate 209

Gross alpha, Gross betaHAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2, UraniumMicro 3, 4, 5+5 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - MANSFIELD (formerly ALPHA ANALYTICAL - MANSFIELD)

320 Forbes Boulevard
Mansfield, MA 02048

(508) 898-9220

Certificate 350

Metals 1, 2SOCs 2

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - WESTBOROUGH (formerly ALPHA ANALYTICAL - WESTBOROUGH)

8 Walkup Drive
Westborough, MA 01581

Phone number not published in the state directory

Certificate 348

Inorganics 1, 2, 3, 5SOCs 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

KATAHDIN ANALYTICAL SERVICES, LLC

600 Technology Way
Scarborough, ME 04074

Phone number not published in the state directory

Certificate 247

Inorganics 1, 2, 3, 5Metals 1, 2SOCs 3

Listed in mde.maryland.gov, read 2026-09-20

NSF INTERNATIONAL

789 North Dixboro Road
Ann Arbor, MI 48105

Phone number not published in the state directory

Certificate 201

Gross alpha, Gross beta, Radium 226, Radium 228HAA5, SOCs 1, 2, 3HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2, UraniumPesticides 1, 2, 3, 4, 5, 6, 7+2 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

NATIONAL TESTING LABORATORIES, LTD

556 South Mansfield Street
Ypsilanti, MI 48197

Phone number not published in the state directory

Certificate 205

HAA5HerbicidesInorganics 1, 2, 3, 6Metals 1, 2, UraniumMicro 3, 4, 5Pesticides 1, 2, 3, 4, 5, 6, 7+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - MINNEAPOLIS

1700 Elm Street SE
Minneapolis, MN 55414

Phone number not published in the state directory

Certificate 322

Metals 1, 2SOCs 2

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS TESTAMERICA - ST. LOUIS

13715 Rider Trail North
Earth City, MO 63045

(314) 298-8566

Certificate 310

Radiologicals

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS CEI - CARY

730 SE Maynard Road
Cary, NC 27511

(919) 481-1413

Certificate 359

Asbestos

Listed in mde.maryland.gov, read 2026-09-20

EMSL ANALYTICAL, INC - CINNAMINSON

200 Route 130 North
Cinnaminson, NJ 08077

Phone number not published in the state directory

Certificate 331

Inorganic 1, 2, 3, 4, 5Metals 1, 2: VOCsRadiologicalsSOCs 3THMs

Listed in mde.maryland.gov, read 2026-09-20

SGS NORTH AMERICA INC - DAYTON

2235 Route 130
Dayton, NJ 08810

Phone number not published in the state directory

Certificate 167

Inorganics 1, 2, 3, 5Metals 1, 2SOCs 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

ALLIANCE TECHNICAL GROUP - NEWARK (formerly CHEMTECH, Inc)

284 Sheffield Street
Mountainside, NJ 07092

Phone number not published in the state directory

Certificate 296

Metals 1, 2SOCs 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS TESTAMERICA - BUFFALO

10 Hazelwood Drive
Amherst, NY 14228

Phone number not published in the state directory

Certificate 294

Inorganics 1, 2, 3Metals 1, 2SOCs 3

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - MELVILLE

575 Broad Hollow Road
Melville, NY 11747

Phone number not published in the state directory

Certificate 208

HAA5, SOCs 3HerbicidesInorganics 1, 2, 3, 5Metals 1, 2Pesticides 1, 2, 3, 4, 6, 7THMs+1 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

ALLIANCE TECHNICAL GROUP - AKRON (formerly SUMMIT LABORATIES, INC)

3310 Win Street
Cuyahoga Falls, OH 44223

Phone number not published in the state directory

Certificate 339

Gross alpha, Gross betaHAA5Inorganics 1, 2, 3, 5, 6Metals 1,2Pesticides 1, 2SOCs 1, 2, 3+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

ALLOWAY

1776 Marion-Waldo Road
Marion, OH 43302

Phone number not published in the state directory

Certificate 184

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2Pesticides 1, 2, 3, 4, 5, 6, 7SOCs 1, 3+2 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - ALTOONA (formerly Fairway Laboratories, Inc. )

2019 Ninth Avenue
Altoona, PA 16602

Phone number not published in the state directory

Certificate 275

Inorganics 1, 2, 3, 5Metals 1, 2Micro 3, 4, 5SOCs 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

EVITTS CREEK WATER COMPANY City of Cumberland

1032 Lake Gordon Road
Bedford, PA 15522

(814) 767-9552

Certificate G-1014

Micro 4

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - PITTSBURGH

1638 Roseytown Rd, Suites 2, 3 & 4
Greenburg, PA 15601

Phone number not published in the state directory

Certificate 308

Gross Alpha,Gross Beta, Radium 226, Radium 228, Strontium 90, Uranium, Tritium

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS ENVIRONMENTAL TESTING PHILADELPHIA, LLC - PHILADELPHIA

213 Witmer Road
Horsham, PA 19044

(215) 355-3900

Certificate 357

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

NIAGARA BOTTLING, LLC

217 Aqua Penn Drive
Howard, PA 16841

(814) 357-8600

Certificate 213

Micro 1, 3, 4

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS LANCASTER LABORATORIES ENVIRONMENT TESTING, LLC

2425 New Holland Pike
Lancaster, PA 17601

Phone number not published in the state directory

Certificate 100

Inorganics 1, 2, 3, 5Metals 1, 2Pesticides 3SOCs 2THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

ALS ENVIRONMENTAL - MIDDLETOWN

301 Fulling Mill Road
Middletown, PA 17057

Phone number not published in the state directory

Certificate 128

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2, UraniumMicro 3, 4, 5Pesticides 1, 2, 3, 4, 5, 6, 7+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

PURE-TEST LABORATORY

729 East Lincoln Avenue
Myerstown, PA 17067

Phone number not published in the state directory

Certificate 345

Inorganics 1, 2, 3Metals 1, 2Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

LABORATORY ANALYTICAL AND BIOLOGICAL SERVICES, INC (LABS INC)

125 Enterprise Drive
New Oxford, PA 17350

Phone number not published in the state directory

Certificate 300

Inorganics 1, 2, 3Metals 1, 2Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

M. J. REIDER ASSOCIATES, INC

107 Angelica Street
Reading, PA 19611

Phone number not published in the state directory

Certificate 261

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2Micro 3, 4, 5Pesticides 1, 2, 3, 4, 5, 6, 7+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

SUBURBAN TESTING LABS, INC

1037 MacArthur Road
Reading, PA 19605

Phone number not published in the state directory

Certificate 347

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2, UraniumMicro 3, 4, 5Pesticides 1, 4, 6+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

GEOCHEMICAL TESTING

2005 North Center Avenue
Somerset, PA 15501

Phone number not published in the state directory

Certificate 226

Inorganics 1, 2, 3Metals 1, 2Micro 4THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL SERVICES, LLC - WILLIAMSPORT

2829 Reach Road
Williamsport, PA 17701

Phone number not published in the state directory

Certificate 202

Inorganics 1, 2, 3Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

GEL LABORATORIES, LLC

2040 Savage Road
Charleston, SC 29407

Phone number not published in the state directory

Certificate 270

Inorganic 1, 2, 3Metals 1, 2RadiologicalsSOCs 3THMsVOCs

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS TESTAMERICA - KNOXVILLE

5815 Middlebrook Pike
Knoxville, TN 37921

(865) 291-3000

Certificate 277

SOCs 2 (Dioxin)

Listed in mde.maryland.gov, read 2026-09-20

PACE ANALYTICAL - MOUNT JULIET National Center for Testing & Innovation

12065 Lebanon Road
Mount Juliet, TN 37122

Phone number not published in the state directory

Certificate 324

HAA5Inorganics 1, 2, 3, 5Metal 1, 2Micro 4, 5SOCs 3 RadiologicalsTHMs+1 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

NOVA BIOLOGICALS, INC

1775 N Loop 336 E, Suite 4
Conroe, TX 77301

(936) 756-5333

Certificate 304

Micro 4

Listed in mde.maryland.gov, read 2026-09-20

ALS ENVIRONMENTAL - HOUSTON

10450 Stancliff Road, Suite 210
Houston, TX 77099

(281) 530-5656

Certificate 343

Metals 1SOCs 2

Listed in mde.maryland.gov, read 2026-09-20

AMERICAN WATER LABORATORY - ALEXANDRIA

2223 Duke Street
Alexandria, VA 22314

(703) 706-3867

Certificate 340

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

EUROFINS ANALYTICS - ASHLAND (formerly Analytics Corporation)

10329 Stony Run Lane
Ashland, VA 23005

Phone number not published in the state directory

Certificate 155

Inorganic 1, 2, 3Metals 1, 2Micro 4

Listed in mde.maryland.gov, read 2026-09-20

HP ENVIRONMENTAL

104 Elden Street, Suite 11
Herndon, VA 20170

(703) 471-4200

Certificate 319

Micro 3, 4

Listed in mde.maryland.gov, read 2026-09-20

OAKWOOD SCIENTIFIC LAB

7102 Pole Green Road
Mechanicsville, VA 23116

(804) 730-3263

Certificate 352

Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

ENVIRONMENTAL HAZARDS SERVICES, LLC

7469 Whitepine Road
North Chesterfield, VA 23237

(804) 275-4788

Certificate 354

ArsenicMetals 1

Listed in mde.maryland.gov, read 2026-09-20

MID-ATLANTIC LABORATORIES, INC

224 Main Street, Suite 1
Port Royal, VA 22535

Phone number not published in the state directory

Certificate 215

Inorganics 1, 2, 3Metals 1Micro 3, 4, 5

Listed in mde.maryland.gov, read 2026-09-20

ENTHALPY ANALYTICAL, LLC

1941 Reymet Road
Richmond, VA 23237

Phone number not published in the state directory

Certificate 341

HAA5HerbicidesInorganics 1, 2, 3, 5, 6Metals 1, 2Micro 4, 5Pesticides 1, 2, 4+3 more in the source list

Listed in mde.maryland.gov, read 2026-09-20

SCHNEIDER LABORATORIES GLOBAL, INC

2512 West Cary Street
Richmond, VA 23220

Phone number not published in the state directory

Certificate 355

Inorganics 1, 2Metals 1, 2Micro 4, 5

Listed in mde.maryland.gov, read 2026-09-20

Where this list comes from

Read on 2026-09-20 from 1 document published by Maryland Department of the Environment. This page lists what those documents list — not necessarily every laboratory Maryland certifies — so check the official directory below before you rely on it.

MD Certified Drinking Water Lab list.pdf (90 laboratories)

How Maryland publishes it: Downloadable PDF list of certified laboratories

Access Maryland Lab Directory

State Certification Program

Maryland Department of the Environment

Visit Certification Program Website

💡 Local Resources & Tips

Maryland Department of Health Laboratories provides testing services; some county health departments offer subsidized testing

How to choose one of these labs

1.Shortlist two or three: start with the labs in your own city above, because most drinking-water samples must reach the lab within 24-30 hours of collection
2.Verify certifications: confirm the lab holds current state certification for the specific contaminants you want to test (bacteria, nitrate, metals, VOCs, PFAS). Certification is per-analyte, and a certificate number on this page is a starting point, not a guarantee it is still current
3.Request pricing: call multiple labs to compare prices and turnaround times—costs vary significantly even within the same state
4.Schedule testing: follow lab instructions for sample collection, storage, and delivery
5.Review results: compare detected concentrations against EPA standards and take appropriate action

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