Water Quality in THORNE BAY, AK (99919)
EPA violation data for public water systems serving ZIP code 99919.
45
Total Violations
0
Health-Based
45
Monitoring / Reporting
44
Resolved
What does this mean?
44 of 45 violations have been resolved. None of these are health-based violations — no contaminant levels exceeded federal safety limits. The remaining 45 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 (45 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Lead and Copper Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Active | N/A |
| TTHM | Monitoring | N/A | N/A | Mar 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jan 31, 2025 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Jan 31, 2025 | Resolved | N/A |
| Interim Enhanced Surface Water Treatment Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(6)
Lead and Copper Rule
51
TTHM
27
Surface Water Treatment Rule
36
Interim Enhanced Surface Water Treatment Rule
38
Surface Water Treatment Rule
36
Interim Enhanced Surface Water Treatment Rule
38
2024(7)
Interim Enhanced Surface Water Treatment Rule
38
TTHM
27
Total Haloacetic Acids (HAA5)
27
Surface Water Treatment Rule
36
Interim Enhanced Surface Water Treatment Rule
38
Interim Enhanced Surface Water Treatment Rule
38
Surface Water Treatment Rule
36
How Does This Compare?
THORNE BAY (99919) has 45 recorded violations, none of which are 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.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
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
Always look for filters certified by NSF International for the specific contaminants you want to remove.