SEAUS Inc.

 

311 Dooley Road

Lexington, SC 29073

 

803.755.0090

   Environmentally Sound Science for a Quality Future

 

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WATER SYSTEMS, INC.

 

803-755-0090

 

 

WATER SYSTEMS, INC.  is certified in South Carolina (Laboratory Certification Number 32576) for aquatic toxicity testing, instream assessments, and fishery and algal productivity studies.   We also offer NPDES support services.

 

AQUATIC TOXICOLOGY SERVICES

 

Acute and Chronic Toxicity Tests fathead minnow

  • Water flea, Ceriodaphnia dubia; fathead minnow,  Pimephales promelas

  • Pass/Fail and Definitive tests

Product Testing

  • LC50 determinations, IC25 water flea

Toxicity Reduction Evaluations (TRE)

  • Industrial and Municipal Plant Process and Treatment System Evaluations

  • Toxicity Identification Evaluations (TIE)

    • Phase I - Characterization

    • Phase II - Identification

    • Phase III - Confirmation

Site Specific Studies

  • Water-Effect Ratio (WER) studies

  • Treatability Studies

  • Bench-Scale Testing

INSTREAM ASSESSMENTS

 

Instream Macroinvertebrate StudiesBiologist with samplers

 

To directly determine what, if any, impact the activities adjacent to a stream may be having on the aquatic communities in the receiving stream, a timed-qualitative multiple habitat sampling protocol is utilized by a team of experienced biologists in accordance with the United States Environmental Protection Agency “Rapid Bioassessment Protocols for Use in Streams and Rivers” (USEPA, 1999) and the South Carolina Department of Health and Environmental Control’s “Standard Operating and Quality Control Procedures for Macroinvertebrate Sampling” (SCDHEC, 1999).

 

FISHERY STUDIES

 

We are certified to conduct freshwater fishery studies. Whether it is to evaluate population dynamics, fate, and/or bioaccumulation of toxicants, we have the field crews and equipment to handle most any sampling location.

 

NPDES SUPPORT

 

Most NPDES toxicity testing limitations in freshwater are determined by the South Carolina Department of Health and Environmental Control using the Cornell Mixing Zone Expert System (CORMIX). The CORMIX model is used to predict effluent dilution in a receiving body of water based on information about the discharge and receiving stream. By determining effluent dilution characteristics in the receiving stream and by using procedures outlined in the “Technical Support Document for Water-Quality Based Toxics Control”, USEPA, 1991, valid acute and chronic testing limits can be determined.

 

Our field technicians are experienced at collecting the field data to accurately run the model.

 

We are well qualified to assist our NPDES clients in permit negotiations for fair and reasonable limits and testing requirements.

 

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