Hach DR2400 - Definitions of USEPA Approved and Accepted; USEPA Approved

Chemical Analysis
Chemical Analysis
5940022ChemAnal.fm Page 53
3.7.1 Definitions of USEPA Approved and Accepted
USEPA Approved
The United States Environmental Protection Agency (USEPA) establishes limits
for maximum contamination levels of certain constituents in water. It also
requires that specific methodology be used to analyze for these constituents.
Sometimes the USEPA develops these methods; more often, the USEPA
evaluates methods developed by manufacturers, professional groups, and
public agencies such as:
pH 6.5–8.5 6.5–8.5 6.5–9.5 5.8–8.6 6.5–8.5
Phosphorus 5 mg/L No Standard
Phenols 0.002 mg/L
0.5 µg/L
C
6
H
5
OH
0.005 mg/L
Potassium 12 mg/L No Standard
Selenium 0.05 mg/L 0.01 mg/L 0.01 mg/L 0.01 mg/L 0.01 mg/L 0.05 mg/L
Silica Dioxide 10 mg/L No Standard
Silver 0.1 mg/L
7
0.05 mg/L 0.01 mg/L No standard No standard
Solids, total
dissolved
500 mg/L
7
500 mg/L No standard 500 mg/L 1000 mg/L
Sodium 75-150 mg/L 200 mg/L 200 mg/L
Sulfate 250 mg/L
7
500 mg/L 250 mg/L No Standard 250 mg/L
Turbidity 0.5-5 NTU 1 NTU 4 JTU 1–2 units 5 NTU <5 NTU
Zinc 5 mg/L
7
5.0 mg/L No Standard 1.0 mg/L 3.0 mg/L
1
To our knowledge, data in this table were accurate and current at the publication date. Contact the regulatory agency in your area
for the most current information.
2
United States Environmental Protection Agency.
3
These limits are established by Health Canada.
4
In the EEC (European Economic Community), these limits are set by the European Committee for Environmental Legislation.
5
In Japan, these limits are established by the Ministry of Health and Welfare.
6
World Health Organization.
7
U.S. Secondary MCL.
8
Identified as a parameter to be regulated in the future.
9
Threshold Odor Number.
Table 13 Comparison of International Drinking Water and FDA Bottled Water Guidelines
1
(continued)
Parameter
USEPA
2
Maximum
Contaminant
Level (MCL)
Canada
3
Maximum
Acceptable
Concentration
EEC
4
Maximum
Admissible
Concentration
Japan
5
Maximum
Admissible
Concentration
WHO
6
Guideline
Bottled Water
U.S. Federal
Drug
Administration
Level