Community Water System · PWS AK2272004
Kotlik Water System
Operator location Anchorage, Alaska - smaller served population (≤ 999) at 617 people served; 1,596 SDWIS violations on record from surface water sources.
- 617
- People served (this PWS)
- 1,596
- EPA violations (this PWS)
- 52
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Kotlik Water System standing, high SDWIS violation third
617 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 3% is middle-third health share (≤ 23%). Population rank #25,828 of 29,740 among systems serving 500+.
The verdict
Kotlik Water System sits in the upper third of the sitemap cohort by violation count (1,596), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (617; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 3% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #25,828 of 29,740
- Population · /systems
- #120 of 164
- Population · AK
- 1,596
- Total EPA violations on record
- 3%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 152
- County
- Wade Hampton Census Area
- School/Daycare
- No
- MCL Violations
- 16
- Monitoring Violations
- 1,345
- Treatment Tech Violations
- 36
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 163 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | MR | 68 | 2025 |
| CARBON, TOTAL | MR | 62 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 33 | 2024 |
| DICHLOROMETHANE | MR | 32 | 2023 |
| 1,2,4-Trichlorobenzene | MR | 32 | 2023 |
| 1,1,2-Trichloroethane | MR | 32 | 2023 |
| Carbon tetrachloride | MR | 32 | 2023 |
| Tetrachloroethylene | MR | 32 | 2023 |
| Styrene | MR | 32 | 2023 |
| 1,2-Dichloropropane | MR | 32 | 2023 |
| cis-1,2-Dichloroethylene | MR | 32 | 2023 |
| Benzene | MR | 32 | 2023 |
| 1,2-Dichloroethane | MR | 32 | 2023 |
| Xylenes, Total | MR | 32 | 2023 |
| p-Dichlorobenzene | MR | 32 | 2023 |
| 1,1,1-Trichloroethane | MR | 32 | 2023 |
| CHLOROBENZENE | MR | 32 | 2023 |
| Ethylbenzene | MR | 32 | 2023 |
| o-Dichlorobenzene | MR | 32 | 2023 |
| 1,1-Dichloroethylene | MR | 32 | 2023 |
| trans-1,2-Dichloroethylene | MR | 32 | 2023 |
| Trichloroethylene | MR | 32 | 2023 |
| Toluene | MR | 31 | 2023 |
| Lead and Copper Rule | MR | 28 | 2025 |
| TTHM | MR | 25 | 2024 |
| CARBON, TOTAL | TT | 24 | 2024 |
| Vinyl chloride | MR | 21 | 2023 |
| Consumer Confidence Rule | Other | 21 | 2021 |
| E. COLI | MR | 16 | 2020 |
Violation Count vs. the National Corpus
Kotlik Water System has 1,596 recorded EPA violations, 100% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 0% carry more. 3% of this system's own violations are health-based (52 of 1,596), and it ranks #25,828 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
1,596 Higher than most more violations than 99%+ of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Kotlik Water System
EPA SDWIS lists 617 people served and 152 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
1,596 violations · 617 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Kotlik Water System
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Alaska compares on the same EPA violation measures. Alaska systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.