Water Quality in WARREN, ME (04864)
EPA violation data for public water systems serving ZIP code 04864.
33
Total Violations
12
Health-Based
21
Monitoring / Reporting
32
Resolved
What does this mean?
32 of 33 violations have been resolved. 12 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 21 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 (33 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Public Notice | Monitoring | N/A | N/A | May 30, 2025 | Active | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | May 31, 2024 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Jun 26, 2023 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jun 26, 2023 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jun 26, 2023 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jun 26, 2023 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jun 26, 2023 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
Violation Timeline
2025(1)
Public Notice
75
2024(4)
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
Revised Total Coliform Rule
2D
How Does This Compare?
WARREN (04864) has 33 recorded violations, including 12 health-based. 1 remains 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.
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.