State Certification Officers for Drinking Water Laboratories, Updated May 2001
If you want to know what contaminants are in your drinking water, check your annual
water quality report from your water supplier or call the water
supplier directly. If you want to have additional tests on your
water, EPA recommends that you use a laboratory certified by the
state. Call the state certification officer or click the web link
below to get a list of certified labs.
A | B | C | D | E | F |
G | H | I | J
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L | M | N | O | P
| Q | R | S | T | U |
V | W | X | Y | Z
To report an update to this list, please call EPA's Safe Drinking Water
Hotline
(1-800-426-4791) or send a report
electronically.
ALABAMA
(334) 271-7773
Department of Environmental Management
Drinking Water Branch
PO Box 301463
Montgomery, AL 36130-1463
ALASKA
online
listing 
(907) 790-2169
Department of Environmental Conservation
State Chemistry Laboratory
10107 Bentwood Place
Juneau, AK 99801
ARIZONA (602) 364-0746
Department of Health Services
Laboratory Licensure and Certification
1740 W. Adams
Suite 203 N
Phoenix, AZ 85007
ARKANSAS
refer to the "Laboratories-Analytical" section of the yellow pages
CALIFORNIA
online
listing
(510) 540-2800
Laboratory Certification Office
2151 Berkeley Way, Annex 2
Berkeley, CA 94704
COLORADO
(303) 692-3291
Department of Health and Environment
Lab Certification Unit
8100 East Lowry Blvd.
Denver, CO 80230
CONNECTICUT
online listing
(860) 509-7389
Department of Public Health
Environmental Health - Labratory Certification Program
P.O. Box 340308, Mail Stop # 51LAB
410 Capital Avenue
Hartford, CT 06106
DELAWARE
Chemicals, Microbes & Radionuclides: (302) 739-5410
Radon: (302) 739-4731
Health Services Protection
Public Water System Supervision Program
Federal Street
P.O. Box 637
Dover, DE 19903
FLORIDA
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,
Barrigada, Guam 96913
(mailing address:
PO Box 22439 GMF,
Barrigada, Guam 96921)
HAWAII
(808) 586-4258
Department of Health
919 Ala Moana Blvd, Room 308
Honolulu, HI 96814
IDAHO
(208) 334-2235 ext. 270
Manager of Laboratory Improvement
State Health Department
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
Department of Public Health
P.O. Box 19435
825 North Rutlidge
Springfield, IL 62794-9435
Radon: (312) 793-4760 or (800) 325-1245
Dept. of Public Health
Division of Laboratories
2121 West Taylor St.
Chicago, IL 60612-4285
INDIANA online listing
Chemicals & Radionuclides: (317) 233-8071
Microbes: (317) 233-8072
Department of Health
635 North Barnhille 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)568-3455
Division of Laboratory Services
Department of Health and Human Services
325 Loyola Avenue, Room 709
New Orleans, LA 70112
MAINE
(207) 287-1929
Health and Environment Testing Laboratory
State House, Station 12
221 State Street
Augusta, ME 04333
MARYLAND
(410) 631-3706
Department of the Environment
Public Drinking Water Program
2500 Broening Highway
Baltimore, MD 21224
MASSACHUSETTS online listing
Chemicals & Radionuclides: (978) 682-5237 ext: 331
Microbes: (978) 682-5237 ext. 333
Radon: (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
Drinking Water and Radiological Protection Division
3350 Martin Luther King, Jr. Boulevard
Building #44, 3rd floor
Lansing, MI 48909-2933
MINNESOTA online
listing
Chemicals & Microbes: (612) 676-5200
Radon: (800) 383-9808
Department of Health
717 Delaware Street, S. E.
P. O. Box 9441
Minneapolis, MN 55440-9441
MISSISSIPPI
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
(406) 444-4400
Department of Environmental Quality
Community Services Bureau, Public Water Supply Program
1520 East 6th Avenue, PO Box 200901
Helena, MT 59620-0901
NEBRASKA
(402) 471-2122
Division of Laboratories
Department of Health and Human Services
P.O. Box 2755
Lincoln, NE 68502
NEVADA online
listing
Chemicals & Microbes: (775) 688-2888
Radon: (775) 687-5394
Bureau of Licensure and Certification
State Health Department
1755 East Plumb Lane, Suite 241
Reno, NV 89502
NEW HAMPSHIRE online listing
(603) 271- 3503
Department of Environmental Services Laboratory
6 Hazen Drive
P.O. Box 95
Concord, NH 03301
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
(701) 328-6172
Department of Health
Division of Chemicals - P.O. Box 937
Division of Microbes - P.O. Box 5520
Bismarck, ND 58502
OHIO online
listing
(614) 644-2752
Ohio Environmental Protection Agency
P.O. Box 1049
122 S. Front Street
Columbus, OH 43215-1049
OKLAHOMA online
listing
Chemicals & Microbes: (405) 702-1024
Radon: (405) 702-1000
Dept. of Environmental Quality
Box 1677
Oklahoma City, OK 73101-1677
OREGON
(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) 783-7150
Department of Environmental Protection
P.O. Box 1467
Harrisburg, PA 17105-1467
PUERTO RICO
Microbes: (787) 274-7711
Chemicals & Radionuclides: (787) 274-7713
Department of Health
Edificio a Centro Medico
P.O. Box 70184
San Juan, PR 00936
RHODE ISLAND
(401) 222-5600 - ask for Ewa King
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
(605) 773-3368 or (800) 738-2301
Department of Health
615 East 4th Street
Pierre, SD 57501-1700
TENNESSEE online
listing
(615) 532-0183
Department of Environmental Conservation
6th Floor, L&C Tower
401 Church Street
Nashville, TN 37243-1549
TEXAS
(512) 239-3518
TNRCC, MC 176
P. O. Box 13087
Austin, TX 78711-3087
UTAH
(801) 584-8459
State Health Laboratory
46 North Medical Drive
Salt Lake City, UT 84113-1105
VERMONT
(802) 863-7335
Department of Health
P.O. 1125
Burlington, VT 05402-1125
VIRGIN ISLANDS
(340) 774-3320 x3
Department of Planning and Natural Resources
Wheatley Center 2
St. Thomas, Virgin Islands 00802
VIRGINIA
(804) 786-7905
Laboratory Certification Officer
One North 14th Street
Richmond, VA 23219
WASHINGTON
(206) 361-2820
Department of Health
Health Laboratory
Drinking Water Laboratory Certification Office
1610 North East 150th Street
Shoreline, WA 98155
WEST VIRGINIA online listing
Chemicals & Radionuclides: (304) 558-2782
Office of Laboratory Services
Bureau of Public Health
4710 Chimney Dr.
Charleston, WV 25302
Microbes: (304) 558-3530
Office of Laboratory Services
State Health Department
167 11th Avenue
South Charleston, WV 25303
WISCONSIN online
listing
(608) 267-7633
Laboratory Certification Program
Department of Natural Resources
P.O. Box 7291
Madison, WI 53707-7921
WYOMING
online listing
(303) 312-6985
Drinking Water Laboratory Certification program
U.S. EPA Region 8
999 18th Street, Suite 300
Denver Federal Center
Denver, CO 80202
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