NECi's Enzymatic Nitrate Testing Method has reached a landmark milestone: it has been officially approved and published in the Federal Register as part of the EPA's Clean Water Act Methods Update Rule for the Analysis of Effluent.
What Was Approved
The EPA has formally recognized NECi's enzymatic nitrate testing method as an approved analytical method for effluent analysis under the Clean Water Act. This approval validates years of scientific development and positions enzymatic testing as a reliable, field-ready alternative to traditional cadmium reduction methods.
Key Effective Dates
- September 12, 2017 — Data collected using these new methods becomes legally defensible.
- September 27, 2017 — The Clean Water Act Methods Update Rule becomes fully effective.
What This Means for You
Laboratories and field teams using NECi's nitrate testing kits can now submit results with full regulatory confidence. Whether you're conducting compliance monitoring, environmental assessments, or effluent reporting, your data is backed by EPA-approved methodology.
View the official ruling: Download the PDF from the Federal Register.
Clean Water. Fertile Soil. Serious Science.
— NECi


