Wisconsin Administrative Code
Department of Natural Resources
NR 800 - Environmental Protection - Water Supply
Chapter NR 809 - Safe Drinking Water
Subchapter IV - Miscellaneous Chemical Monitoring Requirements, Raw Surface Water Standards, and Certified Laboratories
Section NR 809.70 - Secondary inorganic chemical and physical standards
Current through August 26, 2024
(1) SECONDARY STANDARDS. Waters containing inorganic chemicals in quantities above the limits contained in this section are not hazardous to health but may be objectionable to an appreciable number of persons. The following secondary standards for inorganic chemicals are listed in Table AA:
Table AA
|
Parameters |
Standard (Milligrams per liter) |
|
Aluminum |
0.05 to 0.2 |
|
Chloride |
250 |
|
Color |
15 units |
|
Copper |
1.0 |
|
Corrosivity |
Noncorrosive |
|
Fluoride1 |
2.0 |
|
Foaming agents |
0.5 |
|
Hydrogen Sulfide |
Not detectable |
|
Iron |
0.3 |
|
Manganese |
0.05 |
|
Odor |
3 (Threshold No.) |
|
Silver |
0.1 |
|
Sulfate |
250 |
|
Total Dissolved Solids |
500 |
|
(TDS) |
|
|
Zinc |
5 |
1 The primary maximum contaminant level for fluoride is contained in s. NR 809.11.
(2) APPLICABILITY OF SECONDARY STANDARDS. The secondary standards contained in this section apply to all public water systems.
(3) COMPLIANCE WITH THE SECONDARY DRINKING WATER STANDARD AND PUBLIC NOTIFICATION FOR FLUORIDE. Water suppliers for community water systems that exceed the secondary maximum contaminant level for fluoride as determined by the last single sample taken in accordance with the requirement of s. NR 809.113, but do not exceed the maximum contaminant level for fluoride as specified in s. NR 809.11, shall provide the notice as specified in s. NR 809.957 to all billing units annually, all new billing units at the time service begins and annually to the department and the department of health services.
