EPA Compliant Methods

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.

Hach Methods EPA Acceptance Letters

Hach has more EPA and compliant methods than any 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 8021

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 10225

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

TNT836

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

Accepted

40 CFR 141

Total Organic Carbon (TOC), HR TNTplus

DW

TNT811

Hach Method 10267

Accepted

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


If you have more questions, please reach out to our Technical Support team.