EPA Compliant Methods  

Use this EPA compliance page to download and identify the right Hach method for your application.

Products. Support. Expertise. Hach provides the right solution for your specific application. With over 60 years of experience delivering the right solutions and the greatest number of EPA approved methods, Hach is your trusted partner in water analysis.

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. Hach maintains the formulation and procedures, and data demonstrating equivalency is available on request.

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 has more EPA approved methods than other supplier!
Analyte Sample Matrix Hach Method Approval Type Reference Method

Acidity, Phenolphthalein, Buret WW 8010 Accepted SM 2310 B
Acidity, Phenolphthalein, Digital Titration WW 8202 Equivalent SM 2310 B
Alkalinity, Digital Titration WW 8203 Equivalent SM 2320 B, EPA 310.2
Ammonia as Nitrogen WW TNT830 Equivalent EPA 350.1, EPA 351.1, EPA 351.2
Ammonia as Nitrogen WW TNT831 Equivalent EPA 350.1, EPA 351.1, EPA 351.2
Ammonia as Nitrogen WW TNT832 Equivalent EPA 350.1, EPA 351.1, EPA 351.2
Ammonia Nitrogen, Electrode WW 10001 Equivalent SM 4500-NH3 D, E, F, or G
Ammonia Nitrogen, Known Addition, Electrode WW 10002 Equivalent SM 4500-NH3 D, E, F, or G
Ammonia, as Nitrogen, Nessler WW 8038 Accepted SM 4500-NH3 C
Arsenic, Total WW 8013 Accepted SM 3500-As B or C
BOD WW 8043 Accepted SM 5210 B
Calcium, Total, Buret DW
8222 Accepted SM 3500-Ca B or D
Calcium, Total, Buret WW 8222 Accepted SM 3500-Ca B or D
Chemical Oxygen Demand WW 8000 Approved 40 CFR 136.3
Chemical Oxygen Demand, TNTplus WW TNT821/
8000
Approved Hach Method 8000, 40 CFR 136.3
Chemical Oxygen Demand, TNTplus WW TNT822/
8000
Approved Hach Method 8000, 40 CFR 136.3
Chloride, Mercuric Nitrate, Digital Titration WW 8206 Equivalent SM 4500-Cl C
Chloride, Silver Nitrate, Buret WW 8225 Accepted SM 4500-Cl B
Chloride, Silver Nitrate, Digital Titration WW 8207
Equivalent
SM 4500-Cl B
Chlorine, Free, DPD DW 8021 Accepted SM 4500-Cl G
Chlorine, Free Amperometric  Titration DW 8334 Equivalent SM 4500-Cl D
Chlorine, Free Amperometric  Titration WW 8334 Equivalent SM 4500-Cl D
Chlorine, Total, DPD ULR DW 8370 Accepted SM 4500-Cl G
Chlorine, Total Amperometric Forward Titration DW 10026 Accepted SM 4500-Cl D
Chlorine, Free, DPD MR DW 10245 Accepted SM 4500-Cl G
Chlorine, Free, DPD MR WW
10245 Accepted SM 4500-Cl G
Chlorine, Free, DPD HR DW 10069 Accepted SM 4500-Cl G
Chlorine, Free, DPD HR WW 10069 Accepted SM 4500-Cl G
Chlorine, Free, DPD TNT DW 10102 Accepted SM 4500-Cl G
Chlorine, Free, DPD TNT WW 10102 Accepted SM 4500-Cl G
Chlorine, Free and Total, TNTplus WW TNT867 Equivalent SM 4500-Cl G
Chlorine, Total Residual, DPD DW 8167 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD WW 8167 Accepted SM 4500-Cl G
Chlorine, Total Residual DW 8168 Accepted SM 4500-Cl D
Chlorine, Total Residual WW 8168 Accepted SM 4500-Cl D
Chlorine, Total Residual, Amperometric Back Titration WW 10025 Accepted SM 4500-Cl C
Chlorine, Total Residual, DPD, ULR WW 10014 Accepted SM 4500-Cl G
Chlorine, Total, DPD, ULR DW 8370 Accepted SM 4500-Cl G
Chlorine, Total, DPD, ULR WW 8370 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD MR DW 10250 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD MR WW 10250 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD HR DW 10070 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD HR WW 10070 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD TNT DW 10101 Accepted SM 4500-Cl G
Chlorine, Total Residual, DPD TNT WW 10101 Accepted SM 4500-Cl G
Chlorine Dioxide, DPD/Glycine DW 10126 Accepted SM 4500-ClO2 D
Chromium VI, TNTplus WW TNT854 Accepted SM 3500-Cr B or D
Chromium VI, Dissolved WW 8023 Accepted SM 3500-Cr B or D
Coliform, Fecal, EC Medium with/MUG DW
Approved Approved Media
Coliform, Fecal, m-FC and m-FC/RA DW/WW 8074 Approved SM 9222 D
Coliform, Total and E. coli, m-ColiBlue24 DW 10029 Approved 40 CFR 141.21, page 349
Coliforms, E. coli, m-TEC SW 8367 Equivalent EPA 1103.1
Coliforms, Fecal and Total, MPN, A1 Medium DW 8368 Equivalent SM 9221 B
Coliforms, P/A Media DW
Equivalent Approved Media
Conductivity DW 8160 Accepted SM 2510 B
Copper, Bicinchoninate Procedure WW 8506 Approved 40 CFR 136
E. coli in Wastewater WW 10029 Approved 40 CFR 136
E. coli, m-ColiBlue24, Enumeration SW 10029 Approved 40 CFR 136
E. coli, m-ColiBlue24, P/A DW 10029 Approved 40 CFR 141.21
Fecal and Total Coliform WW 8001 Accepted SM 9221 B/E
Fecal and Total Coliform DW 8001 Accepted SM 9221 B/E
Fecal and Total Coliform SW 8001A Accepted SM 9221 E
Fecal and Total Coliform SS
8001A Accepted SM 9221 E
Fecal and Total Coliform DW 8001A Accepted SM 9221 E
Fecal Coliform, Sludge, MPN, A1 Medium WW 10028 Equivalent SM 9221 D/E
Fecal Coliform, Sludge, MPN, LTB/EC Medium WW 10027 Equivalent SM 9221 D/E
Fecal Streptococci, MPN WW 8172 Equivalent SM 9230 B
Fluoride, SPADNS DW 8029 Accepted SM 4500-F B/D
Fluoride, SPADNS WW 8029 Equivalent SM 4500-F B/D
Fluoride, Electrode WW 8323 Equivalent SM 4500-F B or C
Fluoride, SPADNS2, Arsenic Free DW
10225 Approved 40 CFR 141
Fluoride, SPADNS2, Arsenic Free WW 10225 Equivalent SM 4500-F B or C
Hardness, Calcium, Digital Titration WW 8204 Equivalent SM 3500-Ca B or D
Hardness, Calcium and Total, Buret WW 8222 Accepted SM 3500-Ca B or D
Hardness, Total, Buret WW 8226 Accepted SM 2340 B or C
Hardness, Total, Digital Titration WW 8213 Equivalent SM 2340 B or C
Hydrogen Ion, pH WW 8156 Accepted SM 4500-H+ B
Iron, 1,10-Phenanthroline WW
8008 Approved 40 CFR 136
Iron, 1,10-Phenanthroline WW TNT858 Equivalent Hach Method 8008
Lead, Total, Voltammetry DW 1001 Approved 40 CFR 141.23
Lead, Total, Dithizone WW 8033 Accepted SM 3500-Pb B or D
Manganese, Periodate Oxidation WW 8034 Approved 40 CFR 136
Nickel, Total WW 8037 Accepted SM 3500-Ni D
Nitrate, Dimethylphenol DW TNT835/
10206
Approved 40 CFR 141
Nitrate, Dimethylphenol DW
TNT836/
10206
Approved
40 CFR 141
Nitrite as Nitrogen WW TNT839/
8507
Equivalent EPA 353.2
Nitrite as Nitrogen WW TNT840/
8507
Equivalent EPA 353.2
Nitrite Nitrogen WW
8507
Approved
40 CFR 136
Oil and Grease, Gravimetric WW 10056 Equivalent EPA 1664 or SM 5220 B
Oxygen, Dissolved, Luminescence WW 10360 Approved 40 CFR 136
Oxygen, Dissolved, Polargraphic WW 8157 Accepted SM 4500-O G
Oxygen, Dissolved, Winkler, Buret WW 8229 Accepted SM 4500-O C
Oxygen, Dissolved, Digital Titration WW 8215 Equivalent SM 4500-O C
pH DW 8156 Accepted EPA 150.1, 150.2; SM 4500-H+ B
Phenols, 4AAP WW 8047 Accepted EPA 420.1
Phosphate, Ortho WW 8048 Accepted EPA 365.1
Phosphate, Ortho WW TNT843/
8048
Equivalent EPA 365.1
Phosphate, Ortho WW TNT844/
8048
Equivalent EPA 365.1
Phosphate, Ortho WW TNT845/
8048
Equivalent EPA 365.1
Phosphorus, Total WW 8190 Accepted EPA 365.1, 365.3
Phosphorus, Total WW TNT843/
8190
Equivalent EPA 365.1, 365.3
Phosphorus, Total WW TNT844/
8190
Equivalent EPA 365.1, 365.3
Phosphorus, Total WW TNT845/
8190
Equivalent EPA 365.1, 365.3
Solids, Dissolved WW 8277 Equivalent SM 2540 C
Solids, Filterable WW 8163 Equivalent SM 2540 C
Solids, Settleable WW 8165 Equivalent SM 2540 F
Solids, Total WW 8271 Equivalent SM 2540 B
Solids, Total Non-filterable WW 8158 Accepted SM 2540 D
Solids, Volatile, Non-filterable WW 8164 Equivalent EPA 160.4
Specific Conductance WW 8160 Accepted EPA 120.1; SM 2510 B
Sulfate WW 8051 Accepted ASTM D516-90, 02
Sulfide WW 8131 Accepted SM 4500-S2 E or F
Sulfite, Buret WW 8071 Accepted SM 4500-SO3 B
Sulfite, Digital Titration WW 8216 Equivalent SM 4500-SO3 B
Turbidity DW 8195 Approved 40 CFR 141
Turbidity DW GLI Approved 40 CFR 141
Zinc, Zincon WW 8009 Approved 40 CFR 136.3

†DW = Drinking Water; SS = Sewage Sludge; SW = Surface Water; WW = Wastewater

Acidity, as CaCO3, Phenolphtalein, Buret