Hach Co.
- Manufactures and distributes analytical instruments and reagents for water testing and water quality analysis, including portable systems (test strips, etc.), laboratory instruments, and process analyzers.
- http://www.hach.com

ISMA
- Manufacturing and selling equipment for flow monitoring, waste water treatment and oil-on-water detection.
- http://perso.orange.fr/isma/

PRP Engineering Inc
- Water and wastewater engineers for design of water pump stations, reservoirs, lift stations, and storm drains.
- http://www.prpengineering.com/

Jorgensen & Close Associates Inc
- Engineering of prestressed concrete water tanks, and post-tensioned concrete water tanks. Includes a virtual tank tour.
- http://www.close-associates.com/

HGN-Hydrogeologie GmbH
- German firm specializing in environmental water issues.
- http://www.hgn-online.de/en/index.htm

Ashbrook Corp
- Manufactures and installs precision-engineered equipment for all water and wastewater treatment and control applications.
- http://www.ashbrookcorp.com/

Gunderboom, Inc.
- Designs, manufactures, and supports aquatic filter barrier systems for diverse applications, including underwater construction, drinking water protection, and protection of marine mammals.
- http://www.gunderboom.com/

Watercone
- Simple solar water distiller for use in developing countries. Description of the product and its method of producing fresh water, general information on potable water needs, information on awards won and press coverage and contact information.
- http://www.watercone.com/

Dantek Environmental Services
- Specialising in a wide range of water hygiene services including biological monitoring, tank cleaning and Legionella risk assessments.
- http://www.dantekenvironmental.co.uk/

Northern Data Systems
- NDS provides radio telemetry SCADA systems and other products for environmental management.
- http://www.nordatasys.com/

Quest Technologies Inc.
- A full-service industrial water treatment company specializing in analytical equipment, chemical feed, and chemical control systems.
- http://www.questeam.com/

Technical Treatment Services
- Provides solutions and services for water treatment, odor control, aeration, and remediation problems.
- http://www.clean-site.com/

Kari Float Switches
- Over 30 years of experience in cable suspended multilevel float switches, silo switches and electronic level controllers. Used in fresh and waste water wells, and tanks.
- http://www.kari-finn.fi/eng/e_index.html

Orival Water Filters
- Manufacturer of automatic self cleaning water filters and strainers for cooling towers, industrial, irrigation, waste water and nozzle protection.
- http://www.orival.com/

Eurofill
- Offers fill packs for cooling towers and waste water treatment, as well as drift and droplet eliminators. Located in Villasanta, Italy.
- http://www.eurofill.it/

OilTrap, Inc.
- Designer and manufacturer of customized water treatment and recycling systems for the removal of oil, sediments, and other contaminants from wash-down water, bilge water, and process water streams.
- http://www.oiltrap.com

Wells Water Treatment Services
- UK water treatment company specialising in maintaining the safe supply of all water to hotels, hospitals, health centres and all major industrial premises and installations.
- http://www.wellswater.co.uk/

TSG Water Resources
- A multi-faceted water company, providing services ranging from the initial master planning phase to day-to-day plant operations and maintenance.
- http://tsgwaterresources.com/

DHA Pollution Control
- Environmental and waste water engineering services.
- http://www.dha-pollution.co.uk/

SRS Crisafulli
- Manufacturer sludge removal systems, including dredge and pumping systems for flood and stormwater control.
- http://www.crisafulli.com/index.html

NEFCO
- Builds fiberglass products for the water and wastewater industries such as baffles, covers, and weirs.
- http://www.nefcoinc.com/

Allstate Resource Management, Inc.
- Lake management company operating throughout South Florida. Offers waterway and wetland maintenance, weed and algae control, fish stocking, stormwater drainage system services, flying insect control, wetland plantings, water testing, fountain installatio
- http://www.allstatemanagement.com/

Aquatic Habitat
- Environmental company specializing in the creation and rehabilitation of streams, rivers, ponds, lakes and wildlife habitat.
- http://www.troutheadwaters.com/

Flomatic Corporation
- Manufacturer of check and foot valves, automatic control valves, backflow preventers, air and vacuum valves for the water, waste water, irrigation, municipal and industrial markets.
- http://www.flomatic.com/

Takitimu Weather Modification
- Unique Indigenous weather modification service. TWM specializes in drought mitigation or water resource augmentation using Indigenous environmental knowledge and holistic methods.
- http://twm.co.nz/

Pulse Instrumentation [1992] Ltd.
- Pulse Instrumentation sells parts and consumables for all continuous-flow Technicon AutoAnalyzer instrumentation used in the analysis of waste water.
- http://www.autoanalyzer.com/

Limnotek Research and Development
- Provide information and implement projects to make optimal use of water to sustain freshwater resources.
- http://www.limnotek.com/

Walden Inc. - Clean Water
- Custom builds wastewater treatment plants for environmentally sensitive areas worldwide, using sequencing batch reactor (SBR) technology.
- http://www.waldeninc.com/

Water Wise of America
- A service oriented company that helps industrial and commercial businesses with water related problems. Offers full-service water treatment, boiler and cooling products,
- http://www.waterwiseofamerica.com/

Tracom
- Manufactures fiberglass products for the water and wastewater industries including: flumes, metering manholes, buildings, enclosures, consoles, and weir boxes.
- http://www.tracomfrp.com/

Thames Water
- Largest water and wastewater services company in the United Kingdom. Information on all areas of Thames Water activities from corporate reports, products and services, community and environmental matters, news, scientific and educational resources and int
- http://www.thames-water.com

Envirogard, Malaysia
- Water treatment company which provides design, installation and servicing of wastewater, potable, and pure water treatment systems; bioremediation; and supplies equipment and chemicals for water treatment. Malaysia.
- http://www.envirogard.com.my/

Granger Water Specialties
- Providing innovative water and wastewater treatment solutions as well as variable frequency drive pumping and control packages, in central California. As electrical contractors, can provide turnkey solutions for pumping and manufacturing processes.
- http://www.grangerwater.com

Tecnomil S.p.A. - Water Technologies & Engineering
- Describes and offers several technologies for desalination and treatment of primary and waste water.
- http://www.tecnomil.it/

Weil Aquatronics
- Manufacturers' representative specializing in pumps, pumping systems, non-chemical water treatment, and related equipment. Territory includes Southern California and Clark County, Nevada.
- http://www.weilaquatronics.com/

Tibban Design
- Manufacturer of tanks for all applications: Water Storage, Pressure Vessels, Reservoir, Sewage. Cryogenic, Stainless Steel, Galvanized.
- http://www.tibban.com/

American Manufacturing Company, Inc.
- Manufacturer of residential and commercial wastewater/water products for septic tanks, onsite sewage treatment and effluent, including drip irrigation equipment, pump controls and motor controls.
- http://www.americanonsite.com/