The National Field Quality Assurance (NFQA) project was created in 1979 to provide quality-assurance reference samples to field personnel who make water quality field measurements. The project monitors the proficiency of alkalinity, pH, and specific conductance measurements determined by water quality field analysts.

Nationwide, hundreds of field measurements are made daily by USGS field-analysts. The data reported by the NFQA project provides a confidence level to these field measurements by testing the proficiency of the instruments and the field-analyst to measure prepared test samples. The proficiency data obtained through the NFQA should be reflected in the data collected by the field-analyst on a daily basis. The data produced by the NFQA project also documents the precision of the method for alkalinity, pH, and specific conductance.

All WY24 samples have been delivered to participants.
The database is open for data entry.
All data must be entered by Wednesday, May 22, 2024 at 4 PM MST.
No late data will be accepted.
Thanks, RoseAnn Martin