Press Release

On 3/28/16, Analytical Services, Inc. (ASI) unexpectedly received notification from the Pennsylvania Department of Environmental Protection (PA DEP) of suspension of ASI’s accreditation for providing analysis of drinking water supplies for Giardia, Cryptosporidium and E. coli. The suspension was based on PA DEP's submission of unknown check samples to ASI and a data audit. 

ASI has reviewed PA-DEP's allegations regarding deficiencies identified in its data audit and believes that the alleged violations are without merit.  ASI has requested further information from PA-DEP that would provide the factual / scientific basis for the alleged violations related to the check samples including identification of the samples involved, PA DEP's spiking protocols and the associated Quality Assurance/Quality Control program information, the Certificate of Analysis for the spike dose, copies of the PA DEP laboratory reports, Chain of Custodies, etc., however ASI was informed by the PA DEP Laboratory Accreditation Program Chief that they “did not have the authority to release that information.”  ASI is confident that upon receipt of the information, it will be able to defend its results.   

ASI respectfully disagrees with and is appealing PA-DEP’s decision, and we will work diligently with them to resolve any issues.  In the interim, ASI has scheduled Bill Hall of New Hampshire ELAP to conduct an audit of its laboratory on Friday (4/1/2016) and, since PA-DEP has not been on-site at ASI, we have invited them to send an auditor as well.  ASI welcomes an audit from any client or any regulatory agency to alleviate any concerns. 

 Please note:  This action by PA-DEP affects utilities located in the state of Pennsylvania only; ASI’s Primary NELAP accreditation from NH-ELAP, Secondary NELAP Accreditation or Approval in other states, and registry on the USEPA Approved Lab List remain unchanged.


Analytical Services, Inc. (ASI, located in Williston, VT) is nationally recognized as an expert laboratory for protozoa analysis.  Accordingly, we have been involved in numerous USEPA-sponsored protozoa research projects, including the USEPA’s multi-laboratory validations of EPA Method 1623.1 (2012), Method 1623 (1999) and Method 1622 (1998).  ASI has analyzed more than 30,000 samples for the detection of Cryptosporidium and Giardia using EPA approved methods over the last 20 years.  ASI has maintained approved status since the inception of the USEPA’s Laboratory Approval Program and is accredited under the National Environmental Laboratory Accreditation Program (NELAP/TNI), with Primary Accreditation through the New Hampshire Environmental Laboratory Accreditation Program (ELAP) and the State of Florida Department of Health.  We have been granted Secondary NELAP Accreditation or Approval to perform Cryptosporidium analysis in more than 25 states.

For additional information, please contact:     

Paul Warden, ASI Vice-President, 800-723-4432 x15 or

Brad Eldred, ASI President, 800-723-4432 x16 or