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Asbestos in Water Testing

In 1974 the EPA passed the Safe Drinking Water Act (SDWA) in an effort to determine the level of contamination in drinking water to which no adverse health effects are likely to occur. There are numerous contaminants regulated by the SDWA and asbestos was added to the list in 1992. The various contaminants can be found in National Primary Drinking Water Regulations (NPDWR).
These regulations are legally enforceable primary standards that apply to public water systems only. For asbestos, the EPA has set a Maximum Contaminant Level (MCL) of 7 million fibers (>10 micron in length) per liter (MFL). The EPA periodically reviews this act to determine if the MCL still protects human health. States and other local agencies may set more stringent drinking water MCLs for asbestos than the EPA; so it is always best to check with your local authorities prior to interpreting your laboratory results.

EPA 100.1 versus 100.2
The EPA 100.1 method started out as the “Analytical Method for Determination of Asbestos Fibers in Water” (EPA-600/4-83-043) and was written in 1983. In 1992, with the establishment of the MCL, the EPA also added to the Federal Register that the analysis of asbestos in water should be conducted using Transmission Electron Microscopy (TEM). Since the 1983 EPA 100.1 method was not designed to specifically meet the needs of the 1992 regulation, the EPA issued a memorandum to clarify how the EPA 100.1 standard could be used for compliance.

The EPA 100.2 method was issued in 1994 (“Determination of Asbestos Structures Over 10 μm in Length in Drinking Water, (EPA/600/R-94/134) and was written specifically to respond to the asbestos drinking water standard. It also incorporated quality assurance objectives developed under the Asbestos Hazard Emergency Response Act (AHERA).
EPA 100.1 vs EPA 100.2

While these two methods are quite similar they differ in several ways- such as filter material, filter pore size, ozone/ultraviolet treatment and fiber identification. These differences arise from the intent of each method. EPA 100.1 was written as a refinement to an interim method and was designed more for research level work than regulatory compliance; whereas, the EPA 100.2 was streamlined for use specifically for compliance with the EPA MCL.

Asbestos in Water Testing Overview & FAQ

Full list of services provided for Asbestos in Water ( click for details )
TEM EPA Method 100.1
TEM EPA Method 100.2 (fibers > 10 microns)
TEM EPA Method 100.2 (fibers >0.5 microns)
Laboratories providing Asbestos in Water ( click for details )
Atlanta, GA (LAB 07) - NVLAP Lab Code 101048-1Baton Rouge, LA (LAB 25) - NVLAP Lab Code 200375-0Beltsville, MD (LAB 19) - NVLAP Lab Code 200293-0Boston, MA (LAB 13) - NVLAP Lab Code 101147-0Buffalo, NY (LAB 14) - NVLAP Lab Code 200056-0Carle Place, NY (LAB 06) - NVLAP Lab Code 101048-10Charlotte, NC (LAB 41) - NVLAP Lab Code 200841-0Chicago, IL (LAB 26) - NVLAP Lab Code 200399-0Cinnaminson, NJ (LAB List in Description) - NVLAP Lab Code 101048-0Dallas, TX (LAB 11) - NVLAP Lab Code 600111-0Denver, CO (LAB 22) - NVLAP Lab Code 200828-0EMSL Canada - Calgary, AB (LAB 65) - NVLAP Lab Code 500100-0EMSL Canada - Edmonton, AB (LAB 50) - NVLAP Lab Code 600321-0EMSL Canada - Markham, ON (LAB 66) - NVLAP Lab Code 600317-0EMSL Canada - Montreal, QC (LAB 68) - NVLAP Lab Code 201052-0EMSL Canada - Ottawa, ON (LAB 67) - NVLAP Lab Code 201040-0EMSL Canada - Toronto, ON (LAB 55) - NVLAP Lab Code 200877-0EMSL Canada - Vancouver, BC (LAB 69) - NVLAP Lab Code 201068-0Fort Lauderdale, FL (LAB 56) - NVLAP Lab Code 500085-0Houston, TX (LAB 15) - NVLAP Lab Code 102106-0Huntington Beach, CA (LAB 33) - NVLAP Lab Code 101384-0Indianapolis, IN (LAB 16) - NVLAP Lab Code 200188-0Kernersville, NC (LAB 02) - NVLAP Lab Code 102104-0Las Vegas, NV (LAB 31) - NVLAP Lab Code 600140-0Long Island City, NY (LAB 03) - NVLAP Lab Code 101048-9Meriden, CT (LAB 24) - NVLAP Lab Code 200700-0Miami, FL (LAB 17) - NVLAP Lab Code 200204-0Minneapolis, MN (LAB 35) - NVLAP Lab Code 200019-0Ontario, California (San Bernadino County / Inland Empire) (LAB 71) - NVLAP Lab Code 600239-0Orlando, FL (LAB 34) - NVLAP Lab Code 101151-0Phoenix, AZ (LAB 12) - NVLAP Lab Code 200811-0Piscataway, NJ (LAB 05) - NVLAP Lab Code 101048-2Plymouth Meeting, PA (LAB 18) - NVLAP Lab Code 200699-0Raleigh, NC (LAB 29) - NVLAP Lab Code 200671-0Rochester, NY (LAB 53) - NVLAP Lab Code 600183-0San Diego, CA (LAB 43) - NVLAP Lab Code 200855-0San Leandro, CA (LAB 09) - NVLAP Lab Code 101048-3Santa Clara, CA (LAB 47) - NVLAP Lab Code 600318-0Seattle, WA (LAB 51) - NVLAP Lab Code 200613-0South Pasadena, CA (LAB 32) - NVLAP Lab Code 200232-0South Portland, ME (LAB 62) - NVLAP Lab Code 500094-0St. Louis, MO (LAB 39) - NVLAP Lab Code 200742-0Syracuse, NY (LAB 73) - NVLAP Lab Code 600283-0Tampa, FL (LAB 93) - NVLAP Lab Code 600215-0
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