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Sampling Techniques
How to properly use sampling as a tool for wastewater treatment.
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The right way to design, build and use a wastewater sampling port.
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Questions often asked about wastewater treatment.
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Norwalk Wastewater Equipment Company, Inc.
220 Republic Street  Norwalk, Ohio, U.S.A.  44857-1156
1-800-NORWECO  Phone: (419) 668-4471  Fax: (419) 663-5440 

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Industry References

At different times and for various reasons, it may be desirable to sample effluent from a wastewater treatment system.  In order to be accurate, especially to determine system performance, any wastewater sampling must follow specific procedures and guidelines. Specific sampling parameters and procedures are described in STANDARD METHODS FOR THE EXAMINATION OF WATER AND WASTEWATER, published by American Public Health Association, American Water Works Association and Water Environment Federation. THE CODE OF FEDERAL REGULATIONS, TITLE 40, PROTECTION OF ENVIRONMENT, published by the Office of the Federal Register, outlines how samples must be analyzed and evaluated to be considered valid by regulatory agencies.

WASTEWATER SAMPLING FOR PROCESS AND QUALITY CONTROL, MANUAL OF PRACTICE NO. OM-1, published by the Water Environment Federation, provides specific instructions on sampling techniques and the conclusions that can be drawn. In order to properly sample water or wastewater flows and draw accurate conclusions, all of these procedures must be strictly followed.