Safe Drinking Water Act & Clean Water Act –
What is it?

Safe Drinking Water Act

The Safe Drinking Water Act reflects the primary drinking water regulation. Drinking water here means finished drinking water from the plant and the distribution lines. But the Safe Drinking Water Act covers also the ground water sources for raw water and the surface water sources for Raw Drinking Water.

Clean Water Act

The Clean Water Act reflects the wastewater analyses. But it is not only the wastewater. The Clean Water Act covers also the Storm Water, the Surface Fresh Water like Rivers, Lakes and Streams. Also, the Marine Water with the control of the bays, the Estuaries and the Beaches are covered by the Clean Water Act too.

Documents for Safe Drinking Water and Clean Water Act

We continue to expand the portfolio of products to support the testing needs of environmental labs in the US for both Clean Water Act and Safe Drinking Water Act testing.  A major component of this expansion is the validation and reporting of the spectrophotometric test kits used for analytes of interest. This page contains all of the documentation and reporting needed by any lab to satisfy auditors of adequate quality control and product suitability.

In some cases, products were issued approval letters by the USEPA in the past.  Due to policy changes at the USEPA, approval letters are no longer provided and instead vendors and labs have to provide adequate documentation of equivalency. For those products where equivalency documentation is required, we have provided certificates of compliance, single laboratory validation and a helpful checklist for labs to comply with the guidelines established in the 2007 EPA Memo from Richard Reding.

We will continue to add and expand the product reports on this page as they become available. Please contact us if there is a specific product you would like more information on.

Approvals / Equivalency Documents

Available for the following parameters:

  • Ammonia (Ammonium)
  • Chlorine
  • Chromate (Chromium VI)
  • COD
  • Cyanide (not available in North America)
  • Nitrate
  • Nitrite
  • Phosphate
  • Sulfate

We are working to provide you more.

USEPA Documentation for Spectroquant® Test Kits

Ammonia (Ammonium)

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean
Water Act
Safe Drinking
Water Act
1.14739 Ammonium Cell Test 0.010 – 2.000 mg/L NH4-N
0.01 – 2.58 mg/L NH4+
0.010 – 2.000 mg/L NH3-N
0.01 – 2.43 mg/L NH3
Yes Yes*
1.14558 Ammonium Cell Test 0.20 – 8.00 mg/L NH4-N
0.26 – 10.30 mg/L NH4+
0.20 – 8.00 mg/L NH3-N
0.26 – 9.73 mg/L NH3
Yes Yes*
1.14544 Ammonium Cell Test 0.5 – 16.0 mg/L NH4-N
0.6 – 20.6 mg/L NH4+
0.5 – 16.0 mg/L NH3-N
0.6 – 19.5 mg/L NH3
 Yes Yes*
1.14559 Ammonium Cell Test 4.0 – 80.0 mg/L NH4-N
5.2 – 103.0 mg/L NH4+
4.0 – 80.0 mg/L NH3-N
5.2 – 97.3 mg/L NH3
 Yes Yes*
1.14752 Ammonium Test 0.010 – 3.00 mg/L NH4-N
0.013 – 3.86 mg/L NH4+
0.010 – 3.00 mg/L NH3-N
0.013 – 3.65 mg/L NH3
 Yes Yes*
1.00683 Ammonium Test 2.0 – 150 mg/L NH4-N
2.6 – 193 mg/L NH4+
2.0 – 150 mg/L NH3-N
2.6 – 182 mg/L NH3
Yes Yes*

* Safe Drinking Water Act uses methods in 40 CFR part 136 Clean Water Act. The Merck KGaA, Darmstadt, Germany, Equivalency documents covers all pack sizes, cells and citation units mentioned in the insert sheet of the test kit.

Chlorine

Product No. Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean
Water Act
Safe Drinking
Water Act
1.00595 Chlorine Cell Test (free chlorine) 0.03 - 6.00 mg/l CI2   Yes
1.00598 Chlorine Test (free chlorine) 0.010 - 6.00 mg/l Cl2   Yes
1.00602  Chlorine Test (total chlorine) 0.010 - 6.00 mg/l Cl2 Yes Yes
1.00597 Chlorine Cell Test (free and total chlorine) 0.03 - 6.00 mg/l Cl2 Yes Yes
1.00599 Chlorine Test for (free and total chlorine) 0.010 - 6.00 mg/l Cl2 Yes Yes

Chromate (Chromium VI)

Product No. Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14552 Chromate Cell Test (Chromium VI) 0.05 - 2.0 mg/l Cr Yes  

COD

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14560 COD Cell Test  4.0 - 40.0 mg/l COD Yes  
1.01796 COD Cell Test  5.0 – 80.0 mg/l COD Yes  
1.14540 COD Cell Test  10 - 150 mg/l COD Yes  
1.14895 COD Cell Test  15 - 300 mg/l COD Yes  
1.14690 COD Cell Test  50 - 500 mg/l COD Yes  
1.14541 COD Cell Test  25 - 1,500 mg/l COD Yes  
1.14691 COD Cell Test  300 - 3,500 mg/l COD Yes  
1.14555 COD Cell Test  500 - 10,000 mg/l COD Yes  
1.01797 COD Cell Test  5,000 – 90,000 mg/l COD Yes  

Cyanide

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14561 Cyanide Cell Test (free cyanide) 0.010 - 0.500 mg/l CN Yes  

Nitrate

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14542 Nitrate Cell Test  0.5-18.0 mg/L NO3-N
2.2 – 79.7 mg/L NO3
Yes  
1.14563 Nitrate Cell Test  0.5 - 25.0 mg/L NO3-N
2.2 – 110.7 mg/L NO3
Yes  
1.14764 Nitrate Cell Test  1.0 - 50.0 mg/L NO3-N
4 – 221 mg/L NO3
Yes  
1.00614 Nitrate Cell Test  23-225 mg/L NO3-N
102 – 996 mg/L NO3
Yes  
1.09713 Nitrate Test  0.10-25.0 mg/L NO3-N
0.4 – 110.7 mg/L NO3
Yes  
1.14773 Nitrate Test  0.2-20.0 mg/L NO3-N
0.89 – 88.5 mg/L NO3
Yes  
1.01842 Nitrate Test  0.3-30.0 mg/L NO3-N
1.3 – 132.8 mg/L NO3
Yes  
1.14556 Nitrate Cell Test  in seawater 0.10-3.00 mg/L NO3-N
0.4 – 13.3 mg/L NO3
Yes  
1.14942 Nitrate Test in seawater  0.2-17.0 mg/L NO3-N
0.9 – 75.3 mg/L NO3
Yes  

Nitrite

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14547 Nitrite Cell Test 0.010 – 0.700 mg/L NO2-N
0.03 – 2.30 mg/L NO2
Yes  
1.00609 Nitrite Cell Test 1.0 – 90.0 mg/L NO2-N
3.0 – 295.2 mg/L NO2
Yes  
1.14776 Nitrite  Test 0.002 – 1.00 mg/L NO2-N
0.007 – 3.28 mg/L NO2
   

Phosphate

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14543 Phosphate Cell Test
(orthophosphate ad Total phosphorus)
0.05 – 5.00 mg/l PO4-P
0.2 – 15.3 mg/l PO4
0.11 – 11.46 mg/l P2O5
Yes Yes
1.14729 Phosphate Cell Test
(orthophosphate ad Total phosphorus)
0.5 – 25.0 mg/l PO4-P
1.5 – 76.7 mg/l PO4
1.1 – 57.3 mg/l P2O5
Yes Yes

Sulfate

Product No.
Spectroquant® Test Kits Measuring Ranges USEPA Equivalency for
Clean 
Water Act
Safe Drinking 
Water Act
1.14548 Sulfate Cell Test 5 - 250 mg/L SO4 Yes  
1.14564 Sulfate Cell Test 100 - 1,000 mg/L SO4 Yes