e-WaterTest
- Provides comprehensive, USEPA approved testing by professionals to determine the quality of drinking water. Includes message boards, informational articles and FAQs on water testing, and news.
- http://www.e-watertest.com/

Proficiency Testing and Quality Control
- worldwide Proficiency Testing (PT) programme for environmental water analysis
- http://www.nmiqa.com/

Environmental Laboratories Testing Ohio
- Benchmark Environmental Laboratories : Legionella Testing, Water Analysis, Water Quality Tests, Bacteria in water, Mold Testing, Fungal Analysis, Bacterial Identification, Parasites, Cryptosporidium, Giardia, services, labs, Columbus, ohio, contamination,
- http://benchmarklabs.biz

Colitag - The First Definitive Water Test System
- Detects for Coliforms and E. Coli, tests for both MUG-positive and MUG-negative E. coli.
- http://www.colitag.com

GFS Chemicals
- Sells water calibration equipment, reagents and quality standards. Page includes online catalog. Based in Powell, Ohio, USA.
- http://www.mcfarlandstandards.com/

Wilkes University
- The Center for Environmental Quality operates and maintains a homeowner outreach program, and a series of water testing laboratories from Wilkes-Barre, Pennsylvania.
- http://www.water-research.net/homeowner.htm

HM Digital - Water Quality Testing Instruments
- Water testing instruments for residential and commercial purposes. Instruments check tap water or monitor water purification systems. Inline and handheld TDS meters, reverse osmosis and filter monitors, precipitators, controllers.
- http://www.tdsmeter.com/

Nova Biologicals Testing Laboratory
- Nova is an environmental testing laboratory, specializing in microbiological testing of drinking water, food and cosmetics, medical devices, and air quality.
- http://www.novatx.com

Blue Marsh Laboratories, Inc. - Environmental Laboratories
- BML is a NELAC Certified Environmental Laboratory. Testing Drinking Water, Waste Water, UST, Soils, Hazardess Waste and many other typs of Analytical Testing.
- http://www.bluemarshlabs.com/

Center for Environmental Quality, Wilkes University
- Specializes in general water quality, biological, and chemical analysis for monitoring programs, water supplies, and homeowners. Includes information on common water quality problems and possible solutions.
- http://www.water-research.net/

Simpltek
- Offers on-site biological and chemical test kits for water, indoor air, food and soil quality. Includes coliform and e-coli specific tests as well as microbial quantitative presence and absence tests.
- http://www.simpltek.com/

Palintest LTD
- Manufacturer of water analysis and water testing instrumentation used in analyzing 48 different parameters cross referenced with available methods for testing water content and drinking water quality.
- http://www.palintest.com/

AquaMD, Inc.
- Connecticut business offers laboratory water testing and provides advice on treatment.
- http://www.aquamd.com/

Total Environmental Services Technologies, Inc.
- Provides laboratory services for water, wastewater, soil, and sludge analyses, testing, monitoring, and treatment.
- http://www.testinc.com/

Aqua Pro-Tech Laboratories
- APL is accredited by the NJDEP, USEPA, NELAP and the US Army, offering login for clients, for testing drinking water, wastewater, soil, sludge and solid samples at labs in Fairfield, NJ.
- http://www.aquaprotechlabs.com/

Clean Water Lead Testing Inc.
- The site provides information and resources for examining lead and arsenic in drinking water. Test kits can be ordered online.
- http://www.leadtesting.org/

Garden State Laboratories, Inc.
- Certified testing laboratory analyzing water, wastewater, recreational bathing water, for chemical, bacteriological and other microbiological contaminants. Performs sampling and analysis for NJ's Private Well Testing Act at Hillside, NJ.
- http://www.gslabs.com/

BSK Analytical Laboratories
- BSK Labs provides high quality testing services to the environmental industry. We specialize in drinking water, waste water and hazardous waste testing.
- http://www.bsklabs.com/

Water and lab test equipment
- Full range of test equipment for pH, conductivity, TDS, ion specific, turbidity, and other water quality parameters.
- http://www.hannainst.com/

Alchemy Environmental Laboratories
- Alchemy Environmental Laboratories - testing to private and public clients in New York State for over 10 years. Full service laboratory in northeast New York State.
- http://www.aelabs.com/

Waterborne, Inc.
- Fluorescent and enzyme-labeled monoclonal antibody detection kits for Giardia, Cryptosporidium, and microsporidia, for water-testing, research, and clinical use; purified organisms for positive controls.
- http://www.waterborneinc.com/

Premier Laboratory
- Premier Laboratory offers complete environmental and drinking water analytical services throughout New England
- http://www.premierlaboratory.com/

Biotrace - Rapid Hygiene Cleanliness Testing
- Biotrace, global leaders in rapid cleanliness testing for food contamination using atp technology.
- http://www.biotrace.com/

Water: Should You Have Yours Tested?
- Information from hometips.com
- http://www.hometips.com/help/wat5.html

Water Testing and Treatment Considerations
- Information from the University of Florida, Institute of Food and Agricultural Sciences
- http://edis.ifas.ufl.edu/scripts/htmlgen.exe?DOCUMENT_HE024

Suburban Water Testing Labs, Inc.
- Nationally Recognized Lab, Specializing in Drinking Water Analysis and Radon Testing
- http://www.h2otest.com/