EPA Compliant Methods

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Products. Support. Expertise. Hach® provides the right solution for your specific application. With almost a decade of experience delivering the right solutions and the greatest number of EPA approved methods, Hach is your trusted partner in water analysis.

Hach Approved Methods

These methods may be used for compliance monitoring. They have either obtained an EPA Approval or Acceptance letter, or the method is a packaged product that follows an EPA Reference method and is deemed Equivalent by Hach. With any method used for compliance reporting, always consult with your local regulatory authority.

Examples of EPA Acceptance Letters

Hach has more EPA approved methods than other supplier!

EPA-Approved Methods

The EPA has evaluated and approved new technological methods developed by Hach Company. All EPA-Approved methods are cited in the Federal Register and compiled in the Code of Federal Regulations at 40 CFR 136 and CFR 141.

EPA-Accepted Methods

The EPA has reviewed Hach methods and accepted them for use in compliance monitoring. These methods are defined by EPA as Acceptable versions of previously approved methods. These methods are generally not published in the Federal Register or in the Code of Federal Regulations. A facsimile of the EPA Acceptance letter is available upon request.

EPA-Equivalent Methods

All EPA Approved methods have specification criteria built into their procedural steps. When an approved or accepted EPA method has been packaged by Hach from the EPA reference method as a test method that meets or exceeds these specification criteria, these methods are deemed to be equivalent for use in EPA compliance monitoring (40 CFR 136.6). EPA does not normally issue equivalence letters for packaged reference methods.

 

Analyte Sample Matrix Hach Test Document Procedure Hach Method in USEPA Format USEPA Approval Type USEPA Reference Method
Ammonia as Nitrogen, ULR, TNTplus WW TNT830 Hach Method 10205 Equivalent EPA 350.1, EPA 351.1, EPA 351.2
Ammonia as Nitrogen, LR, TNTplus WW TNT831 Hach Method 10205 Equivalent EPA 350.1, EPA 351.1,   EPA 351.2
Ammonia as Nitrogen, HR, TNTplus WW TNT832 Hach Method 10205 Equivalent EPA 350.1, EPA 351.1,   EPA 351.2
Ammonia as Nitrogen, UHR, TNTplus WW TNT833 Hach Method 10205 Equivalent EPA 350.1, EPA 351.1,   EPA 351.2
Chemical Oxygen Demand WW 8000 Hach Method 8000 Approved 40 CFR 136.3
Chemical Oxygen Demand, TNTplus WW TNT821 Hach Method 8000 Approved Hach Method 8000, 40   CFR 136.3
Chemical Oxygen Demand, TNTplus WW TNT822 Hach Method 8000 Approved Hach Method 8000, 40   CFR 136.3
Chlorine, Free, DPD DW 8021 Hach Method 8201 Accepted SM 4500-Cl G
Coliform, Total and E. coli, m-ColiBlue24 DW 10029 N/A Approved 40 CFR 141.21, page 349
Fluoride, SPADNS2, Arsenic Free DW 10225 Hach Method 10025 Approved 40 CFR 141
Nitrate, Dimethylphenol, LR, TNTplus DW TNT835 Hach Method 10206 Approved 40 CFR 141
Nitrate, Dimethylphenol, LR, TNTplus WW TNT835 Hach Method 10206 Approved 40 CFR 136
Nitrate, Dimethylphenol, HR, TNTplus DW TNT835 Hach Method 10206 Approved 40 CFR 141
Nitrate, Dimethylphenol, HR, TNTplus WW TNT836 Hach Method 10206 Approved 40 CFR 136
Oxygen, Dissolved, Luminescence WW 10360 Hach Method 10360 Approved 40 CFR 136
Phosphate, Ortho DW/WW 8048 Hach Method 8048 Accepted EPA 365.1/365.2
Phosphorus, Total WW 8190 Hach Method 8190 Accepted EPA 365.1, 365.3
Simplified TKN (s-TKN™) TNTplus WW TNT880 Hach Method 10242 Equivalent 40 CFR 136
Total Organic Carbon (TOC), LR TNTplus DW TNT810 Hach Method 10267 Approved 40 CFR 141
Total Organic Carbon (TOC), HR TNTplus DW TNT811 Hach Method 10267 Approved 40 CFR 141
Turbidity DW 8195 Hach Method 8195 Accepted EPA 180.1
Turbidity DW 10133 Hach Method 10133 Approved 40 CFR 141
Turbidity DW 10258 Hach Method 10258 Approved 40 CFR 141

 

DW = Drinking Water; WW = Wastewater

 

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