Note: Just because the latest incident is in 2017 or 2018 doesn't mean your water is free of contaminants! There is a considerable lag between when data is collected and when it is published by the EPA.
Trihalomethanes occur when naturally-occurring organic and inorganic materials in the water react with the disinfectants, chlorine and chloramine.
Liver, kidney or central nervous system problems; increased risk of cancer
Haloacetic acids occur when naturally-occurring organic and inorganic materials in the water react with the disinfectants, chlorine and chloramine.
Increased risk of cancer
Coliforms are bacteria that are naturally present in the environment and used as an indicator that other, potentially harmful, bacteria may be present. Coliforms found in more samples than allowed is a warning of potential problems.
Not a health threat in itself; it is used to indicate whether other potentially harmful bacteria may be present5
| Water System | Type | Measure | Violation | Effects | Begin Date |
|---|---|---|---|---|---|
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-10-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-10-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-10-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-10-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-10-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-10-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-10-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-10-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-07-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-07-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-04-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-04-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF RIDGECREST WATER SUPPLY | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| NORTH LAKE ST JOHN WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| TOWN OF CLAYTON WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | Total Haloacetic Acids (HAA5) | MCL, Average | Maximum Contaminant Level Violation | Increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| TOWN OF FERRIDAY WATER SYSTEM | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
| LAKE ST JOHN WATERWORKS DISTRICT 1 | TTHM | MCL, Average | Maximum Contaminant Level Violation | Liver, kidney or central nervous system problems; increased risk of cancer | 2018-01-01 |
Is your home water filter providing you with the clean, safe water you deserve?
