ALABAMA online listing 
(334) 271-7773
Department of Environmental Management
Drinking Water Branch
PO Box 301463
Montgomery, AL 36130-1463
ALASKA online listing Chemistry
online listing Microbiology
(907) 790-2169, fax (907)929-7335
Chemistry: (970) 375-8210
Microbiology: (907) 375-8209
Department of Environmental Conservation
5251 Hinkle Road
Anchorage, AK 99507
ARIZONA online listing
(602) 364-0728
Department of Health Services
Laboratory Licensure and Certification
250 N. 17th Avenue
Phoenix, AZ 85007
ARKANSAS
(501) 661-2220
Public Health Laboratories
Arkansas Division of Health, H47
4815 West Markham Street
Little Rock, AR 72219
CALIFORNIA online
listing
(213) 580-5731
California Department of Health Services
1449 West Temple Street, Room 231
Los Angeles, CA 90026
COLORADO online
listing
(303) 692-3291
Department of Public Health and Environment
8100 East Lowry Blvd.
Denver, CO 80230-6928
CONNECTICUT
online listing
(860) 509-7389
Department of Public Health
Environmental Health - Labratory Certification Program
P.O. Box 340308
410 Capital Avenue, Mail Stop # 51LAB
Hartford, CT 06106
DELAWARE online listing
Chemicals, Microbes & Radionuclides: (302) 739-5410
Radon: (302) 739-4731
Delaware Public Health Lab
30 Sunnyside Road
P.O. Box 1047
Smyrna, DE 19977-1047
FLORIDA online listing
Chemicals & Microbes: (904) 791-1599
Radionuclides: (407) 297-2095
Radon: (850) 245-4288 or (800) 543-8279
Department of Health and Rehabilitative Services
1217 N. Pearl Street
Jacksonville, FL 32202
GEORGIA
(404) 656-4807
Georgia Department of Natural Resources
Drinking Water Permitting Program
Floyd Towers, East Suite 1362
205 Butler Street, SE
Atlanta, GA 30334
GUAM
(671) 475-1664
Monitoring Services Division
Guam Environmental Protection Agency
15-6101 Mariner Avenue, Tiyan,
Tiyan, Guam 96913
(mailing address:
PO Box 22439 GMF,
Barrigada, Guam 96921)
HAWAII online listing
Chemicals: (808) 453-6679, fax (808) 453-6685
State of Hawaii Department of Health
Environmental Chemistry Section
2725 Waimano Home Road
Pearl City, HI 96782
Microbes: (808) 453-6601, fax (808) 453-6612
State of Hawaii Department of Health
Environmental Microbiology Section
2725 Waimano Home Road
Pearl City, HI 96782
IDAHO online listing
(208) 334-2235
Manager, Environmental Section
State of Idaho Department of Health and Welfare
2220 Old Penitentiary Road
Boise, ID 83712-8299
ILLINOIS online
listing
Chemicals: (217) 782-6455
Illinois Environmental Protection Agency
P.O. Box 19276
1021 North Grand Ave., East
Springfield, IL 62794-9276
Microbes: (217) 782-6562
online listing
Illinois Department of Public Health, Division of Laboratories
Environmental Laboratory Evaluation Unit
P.O. Box 19435
825 North Rutledge
Springfield, IL 62794-9435
Radionuclides: (217) 786-6363
Illinois Department of Nuclear Safety
1301 Knotts Street
Springfield, IL 62703
INDIANA online listing
Chemicals & Radionuclides: (317) 233-8071
Microbes: (317) 233-8072
Department of Health, Medical Services Building
635 North Barnhill Drive
Indianapolis, IN 46202
Radon: (317) 233-7146
Department of Health
2 North Meridian
Indianapolis, IN 46204
IOWA online listing
(515) 725-0341
Department of Natural Resources
Water Quality Bureau
401 SW 7th St., Suite M
Des Moines, IA 50309-4611
KANSAS online listing
(785) 296-1639
Health and Environmental Laboratory
Department of Health and Environment
Forbes Field, Building #740
Topeka, KS 66620-0001
KENTUCKY online listing
(502) 564-6121
Department of Environmental Protection
100 Sower Blvd., Suite 104
Frankfort, KY 40601
LOUISIANA
(504) 219-4664
24 Hour Number: (504) 458-9537
State Laboratory
Louisiana Department of Health and Hospitals
3101 West Napoleon Ave
Metairie, LA 70001
MAINE online listing
(207) 287-1929
Department of Health and Human Services
Division of Health Engineering, Bureau of Health
State House, Station 11
286 Water Street, 3rd Floor
Augusta, ME 04333
MARYLAND online
listing
(410) 537-3712
Department of the Environment
Water Supply Program
1800 Washington Boulevard, Suite 450
Baltimore, MD 21230
MASSACHUSETTS online
listing
(978) 682-5237
Radiochemistry: (617) 983-6870
Department of Environmental Protection
William X. Wall Experiment Station
37 Shattuck Street
Lawrence, MA 01843
MICHIGAN online
listing
(517) 335-8812
Department of Environmental Quality
3423 N. Martin Luther King Jr. Boulevard
P.O. Box 30195
Lansing, MI 48909
MINNESOTA online
listing
Chemicals, Microbes & Radionuclides: (651) 201-5323
Radon: (800) 383-9808
Department of Health
601 Robert Street North
P.O. Box 64899
St. Paul, MN 55164-0899
MISSISSIPPI online listing
Chemicals & Microbes: (601) 576-7518
Radon & Radionuclides: (601) 987-6893 or (800) 626-7739
State Department of Health
P.O. Box 1700
Jackson, MS 39215-1700
MISSOURI online listing
(573) 751-1077 or (800) 334-6946
Public Drinking Water Program
Department of Natural Resources
P.O. Box 176
Jefferson City, MO 65102
MONTANA online listing
(406) 444-2642
DPHHS Environmental Laboratory
1400 Broadway Rm. B-219
Helena, MT 59620
NEBRASKA
(402) 471-2122
Division of Laboratories
Department of Health and Human Services
P.O. Box 2755
Lincoln, NE 68502
NEVADA online listing
(775) 687-9491
Division of Environmental Protection
Department of Conservation and Natural Resources
901 S. Stewart Street, Suite 4001
Carson City, NV 89701-5249
NEW HAMPSHIRE online listing
(603) 271-2998
Department of Environmental Services
Environmental Laboratory Accreditation Program
P.O. Box 95
29 Hazen Drive
Concord, NH 03302
NEW JERSEY
(609) 292-3950
Office of Quality Assurance
Department of Environmental Protection
P.O. Box 424
Trenton, NJ 08625
NEW MEXICO online listing
(505) 827-7536
Drinking Water Bureau
Environment Department
525 Camino de las Marquez, Suite 4
Santa Fe, NM 87501
NEW YORK online listing
(518) 485-5570
Department of Health
Wadsworth Center
Empire State Plaza
P.O. Box 509
Albany, NY 12201-0509
NORTH CAROLINA
online listing
Chemicals & Microbes: (919) 733-7308
Radionuclides & Radon: (919) 571-4141
Department of Health & Human Services
Lab Services
P.O. Box 28047
Raleigh, NC 27611
NORTH DAKOTA online listing
Chemistry
North Dakota Department of Health
Laboratory Services Division – Chemistry
P.O. Box 937
Bismarck, ND 58502-0937
Microbiology
North Dakota Department of Health
Laboratory Services Division – Microbiology
P.O. Box 937
Bismarck, ND 58502-0937
OHIO online listing
(614) 644-4245
Ohio Environmental Protection Agency
Division of Environmental Services
8995 East Main Street
Reynoldsburg, OH 43068
OKLAHOMA online
listing
Chemicals & Microbes: (405) 702-1024
Radon: (405) 702-1000
Department of Environmental Quality
Box 1677
Oklahoma City, OK 73101-1677
OREGON online listing
(503) 229-5505
State Public Health Laboratory
1717 South West 10th Avenue
Portland, OR 97201
PACIFIC ISLANDS
(415) 744-1594
U.S. EPA Region 9
Pacific Insular Area Programs
75 Hawthorne Street
San Francisco, CA 94105
PENNSYLVANIA online listing
(717) 346-7200
Department of Environmental Protection
Bureau of Laboratories
2575 Interstate Drive
Harrisburg, PA 17110-9332
PUERTO RICO
(787) 274-7711 or 7713
Medical Center
Institute of Health Laboratory
Builing A Old Psychiatric Hospital
P.O. Box 70184
San Juan, PR 00936-8184
RHODE ISLAND online
listing
(401) 222-5578
Department of Health
50 Orms Street
Providence, RI 02904
SOUTH CAROLINA
(803) 896-0970
Department of Health & Environmental Control
P.O. Box 72
State Park, SC 29147
SOUTH DAKOTA online listing
(605) 773-3754
SD Department of Environment & Natural Resources
Joe Foss Building
523 E. Capitol
Pierre, SD 57501
TENNESSEE online listing PDF file
(615) 532-0183
Department of Environmental Conservation
6th Floor, L&C Tower
401 Church Street
Nashville, TN 37243-1549
TEXAS online listing
(512) 239-3518
TCEQ, MC 176
P.O. Box 13087
Austin, TX 78711-3087
UTAH online listing
(801) 584-8469
Utah Department of Health
Division of Laboratory Services
46 North Medical Drive
Salt Lake City, UT 84113-1105
VERMONT online listing
(802) 863-7335
Department of Health
195 Colchester Avenue
Burlington, VT 05402-1125
VIRGIN ISLANDS
(340) 773-0565, extension 2274
Department of Planning and Natural Resources
45 Mars Hill
Frederiksted, VI 00840
VIRGINIA online
listing
(804) 648-4480
Laboratory Certification Officer
600 North Fifth Street
Richmond, VA 23219
WASHINGTON online
listing
(360) 895-6144
Laboratory Accreditation Section
Washington State Department of Ecology
P.O. Box 488
Manchester, WA 98353-0488
WEST VIRGINIA online listing PDF
Chemicals: (304) 965-2694
Office of Laboratory Services
Bureau of Public Health
Environmental Chemistry Laboratory
4710 Chimney Drive, Suite G
Charleston, WV 25302
Microbiology (304) 558-3530
Office of Laboratory Services
Environmental Microbiology Laboratory
167 11th Avenue
South Charleston, WV 25303
WISCONSIN online listing
(608) 266-0245
Wisconsin Department of Natural Resources
101 S. Webster Street, TS-6
P.O. Box 7291
Madison, WI 53707-7921
WYOMING
online listing
(303) 312-6984
Drinking Water Laboratory Certification program
U.S. EPA Region 8, TMS-Q
1595 Wynkoop Street
Denver, CO 80202-1129
