KOTLIK WATER SYSTEM Water Quality Report
Population
617
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
—
of 49,184 US systems
5-Year Record
⚠️ 255
violations recorded
F
Unsafe
Safety Grade
255 violations in the past 5 years, including 38 health-based
System Details
- PWSID
- AK2272004
- Population Served
- 617
- Water Source
- Surface Water
- Owner
- Native American
- State
- Alaska
- EPA Region
- 10
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 5000 | ⚠ Monitoring/Reporting | 20 |
| Contaminant 7000 | ⚠ Monitoring/Reporting | 19 |
| Contaminant 0600 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 0300 | ⚠ Monitoring/Reporting | 37 |
| Contaminant 0200 | ✕ Health-Based | 48 |
| Haloacetic Acids (HAA5) | ✕ Health-Based | 24 |
| Total Trihalomethanes (TTHMs) | ✕ Health-Based | 22 |
| Contaminant 3100 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 17 |
| Contaminant 2920 | ✕ Health-Based | 72 |
| Contaminant 0999 | ⚠ Monitoring/Reporting | 9 |
| Total Coliform | ⚠ Monitoring/Reporting | 16 |
| Nitrate | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2378 | ⚠ Monitoring/Reporting | 3 |
| Vinyl Chloride | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2955 | ⚠ Monitoring/Reporting | 3 |
| Trichloroethylene (TCE) | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2968 | ⚠ Monitoring/Reporting | 3 |
| Tetrachloroethylene (PCE) | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2976 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2977 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2979 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2980 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2981 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2982 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2983 | ⚠ Monitoring/Reporting | 3 |
| Chloramine | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2985 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2987 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2989 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2990 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2991 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2992 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 2996 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 7500 | ⚠ Monitoring/Reporting | 9 |
Violation History
2025
8
2024
76
2023
110
2022
35
2021
26
2020
18
2019
18
2018
13
2017
11
2016
10
Total violations on record: 361
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Reverse Osmosis System
Removes up to 99% of contaminants including PFAS, lead, arsenic, and nitrates
Removes: Nitrate
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Trichloroethylene (TCE), Tetrachloroethylene (PCE), Vinyl Chloride
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade F
Avg: B-C
361violations total
1289% of national average
National avg: ~28 per system
🏘️ Small community water system.