A complete list of all programs within the Department of Environment, Great Lakes, and Energy (EGLE)
Community involvement and public participation are an essential part of EGLE’s mission, vision, and values.
Resources and information on utilizing RRD's data exchange and the Inventory of Facilities.
An interactive map displaying contaminated sites throughout Michigan regulated under Parts 213, 201, and 211.
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| Test | Excellent | Satisfactory | Objectionable | Related Problems |
|---|---|---|---|---|
| Chloride | ND - 20 | 20 - 250 | Over 250 mg/L | Taste and corrosion. |
| Fluoride | 0.7 - 1.2 | ND - 0.7 or 1.2 - 4 |
Over 4.0 mg/L (USEPA drinking water standard is 4.0 mg/L for the state of Michigan) | Lower levels are beneficial in preventing tooth decay. High levels may cause mottling of enamel. |
| Hardness | 50 - 125 | 125 - 250 | Over 250 mg/L or less than 25 (17.1=1 grain) | Scaling of water fixtures, soap scum at high levels, corrosion at low levels. |
| Iron | ND - 0.2 | 0.2 - 0.3 | Over 0.3 mg/L | Staining, turbidity, taste, and odor. |
| Nitrate | ND - 3 | 4 - 10 | Over 10 mg/L (USEPA drinking water standard) | Levels greater than 10 mg/L are a health hazard. Methemoglobinemia (blue baby) especially infants. USEPA requires analysis within 48 hours. |
| Nitrite | ND - 0.3 | 0.4 - 1 | Over 1 mg/L (USEPA drinking water standard) | Levels great than 1.0 mg/L are a health hazard. Methemoglobinemia (blue baby) especially infants. USEPA requires analysis within 48 hours. |
| Sodium | ND - 20 | See Related Problems | See Related Problems | Special diets may require water of low sodium content. NOTE: All persons on severely restricted sodium diets should consult with their physician regarding continued use of the water supply. Acceptability of sodium concentration varies with sensitivity to taste. |
| Sulfate | ND - 50 | 50 - 250 | Over 250 mg/L Over 500 mg/L (see Related Problems) |
Taste, odor, scaling in boilers and heat exchangers. Over 500 may have laxative effect especially for new supply users (travelers' diarrhea). |
ND = Not Detected
All results are measured in milligrams per liter.
