USGS Ohio Water Science Center

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Ohio Water Microbiology Lab

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Ohio Water Science Center

USGS In Your State

USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusettes South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.

Analytical Methods


Cryptosporidium and Giardia are widely distributed in the aquatic environment and are the principal protozoan pathogens that affect the public health acceptability of waters in the United States. Both produce environmentally resistant forms (oocysts and cysts) that allow for their extended survival in water. The OWML analyzes water samples for Cryptosporidium and Giardia by use of the USEPA-approved Filtration/IMS/FA method.


Cryptosporidium and Giardia
by Filtration/IMS/FA


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