Mich. Admin. Code R. 325.10420
Rule 420.
Pursuant to section 14 of the act, if any contaminants listed in table 1 of this rule are detected above a level of concern as indicated in table 1 of this rule, then the consumer confidence report shall include a description of the potential adverse health effects and the vulnerable subpopulation that may be susceptible to the level of contaminant detected. The community water supply may use the relevant language provided in table 1 of R 325.10405.
Table 1 Contaminants for vulnerable subpopulation reporting
Contaminant | Susceptible vulnerable subpopulation | Level of concern |
Fecal coliform/ E. coli | Infants, young children, the elderly, and people with severely compromised immune systems. | Confirmed presence (any confirmed detect) |
Copper | People with Wilsons disease. | 1.3 mg/l (ppm) |
Fluoride | Children. | 4.0 mg/l (ppm) |
Lead | Infants and children. | 15.0 µg/l (ppb) until December 31, 2024; 12.0 µg/l (ppb) beginning January 1 2025 |
Nitrate | Infants below the age of 6 months. | 10.0 mg/l (ppm) |
Nitrite | Infants below the age of 6 months. | 1.0 mg/l (ppm) |
Mich. Admin. Code R. 325.10420