About Us

M.J. Reider  is a full service environmental testing laboratory  that specializes in the analysis of drinking water, ground water, waste water, soil, and solid materials.  

M.J. Reider Associates, Inc. is an environmental testing laboratory which has been accredited to the National Environmental Laboratory Accreditation Conference (NELAC) Standards by the Pennsylvania Department of Environmental Protection (PADEP) for drinking water (DW), non-potable water (NPW) and solid and chemical materials (SCM). MJRA has been a proud member of The NELAC Institute (TNI) since its inception.  

Along with our analytical services, expert sample collection and courier services are available for municipalities, industries and private homeowners.

M.J. Reider Associates, Inc is committed and dedicated to providing only the highest quality analytical data possible to its clients.

Our Certifications

Accurate, defensible, trustworthy data starts here. An environmental testing laboratory you can rely on.

We are accredited in accordance with the National Environmental Laboratory Accreditation Program (NELAP), which is based on ISO/IEC 17025:2005 standards. This requires us to pass strict regulatory audits and pass routine proficiency testing in all matrices to ensure our analysis is up to the highest level of quality standards.

We hold accreditation for drinking water, non-potable water, and solid and chemical materials in Pennsylvania.