Water Quality in COFFMAN COVE, AK (99918)
EPA violation data for public water systems serving ZIP code 99918.
36
Total Violations
21
Health-Based
15
Monitoring / Reporting
35
Resolved
What does this mean?
35 of 36 violations have been resolved. 21 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 15 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 (36 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Public Notice | Monitoring | N/A | N/A | Sep 7, 2025 | Active | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.078 | Mar 31, 2025 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.077 | Dec 31, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.077 | Dec 31, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Nov 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.073 | Sep 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.073 | Sep 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Health-Based | N/A | 0.073 | Sep 30, 2024 | Resolved | N/A |
| Consumer Confidence Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
Violation Timeline
2025(2)
Public Notice
75
Total Haloacetic Acids (HAA5)
02
2024(12)
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Surface Water Treatment Rule
36
Interim Enhanced Surface Water Treatment Rule
38
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Total Haloacetic Acids (HAA5)
02
Consumer Confidence Rule
71
Consumer Confidence Rule
71
Surface Water Treatment Rule
36
Chlorine
27
Revised Total Coliform Rule
3A
How Does This Compare?
COFFMAN COVE (99918) has 36 recorded violations, including 21 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.
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 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.