Water Quality in CHETEK, WI (54728)
EPA violation data for public water systems serving ZIP code 54728.
27
Total Violations
9
Health-Based
18
Monitoring / Reporting
25
Resolved
What does this mean?
25 of 27 violations have been resolved. 9 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 18 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (27 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| E. COLI | Monitoring | 0 | N/A | Jul 2, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jul 2, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jul 2, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Aug 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Aug 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Aug 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Aug 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jul 31, 2023 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(3)
E. COLI
34
E. COLI
34
E. COLI
34
2023(14)
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
1A
Revised Total Coliform Rule
1A
Revised Total Coliform Rule
1A
Revised Total Coliform Rule
1A
Revised Total Coliform Rule
1A
Public Notice
75
Nitrate-Nitrite
02
Nitrate-Nitrite
02
Nitrate-Nitrite
02
Nitrate-Nitrite
02
How Does This Compare?
CHETEK (54728) has 27 recorded violations, including 9 health-based. 2 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
One of the few filtration methods effective at removing nitrates and nitrites. Essential for households with infants.
Targets:Nitrate, Nitrite, Dissolved Solids
Look for:NSF/ANSI 58 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.