NANWALEK
PWSID: AK2240464 · Nanwalek, AK · Serves 281 people
According to EPA Safe Drinking Water Information System (SDWIS), NANWALEK (PWSID AK2240464) in Nanwalek, AK is listed as a CWS water system covering about 281 people. The same extract lists 19 health-based violation records spanning 2000-2025. Those 19 health-based rows for NANWALEK cover contaminants such as Surface Water Treatment Rule, Interim Enhanced Surface Water Treatment Rule, Coliform (TCR); they remain historical EPA registry entries, not a current compliance or drinkability score.
NANWALEK has 19 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 4 distinct EPA contaminant codes appear in this system's record, including Surface Water Treatment Rule, Interim Enhanced Surface Water Treatment Rule, Coliform (TCR). Recorded violations span 2000–2025. Day-to-day primacy enforcement for this system runs through the Alaska drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Alaska state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- AK2240464
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Nanwalek, AK
- Population Served
- 281
- Health Violations
- Yes (19)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Surface Water Treatment Rule | 14 | 14 |
| Interim Enhanced Surface Water Treatment Rule | 2 | 2 |
| Coliform (TCR) | 2 | 2 |
| Revised Total Coliform Rule | 1 | 1 |
Violation History (19)
| Contaminant | Health | Date |
|---|---|---|
| Surface Water Treatment Rule | Yes | Nov 1, 2025 |
| Revised Total Coliform Rule | Yes | Dec 1, 2019 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Sep 1, 2018 |
| Surface Water Treatment Rule | Yes | Nov 1, 2017 |
| Surface Water Treatment Rule | Yes | Jan 1, 2017 |
| Surface Water Treatment Rule | Yes | Apr 1, 2016 |
| Surface Water Treatment Rule | Yes | Mar 1, 2016 |
| Surface Water Treatment Rule | Yes | Feb 1, 2016 |
| Surface Water Treatment Rule | Yes | Jan 1, 2016 |
| Surface Water Treatment Rule | Yes | Dec 1, 2015 |
| Coliform (TCR) | Yes | Oct 1, 2015 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Jun 1, 2007 |
| Surface Water Treatment Rule | Yes | Nov 1, 2005 |
| Surface Water Treatment Rule | Yes | Oct 1, 2005 |
| Surface Water Treatment Rule | Yes | Aug 1, 2004 |
| Surface Water Treatment Rule | Yes | Jul 1, 2004 |
| Surface Water Treatment Rule | Yes | Dec 1, 2003 |
| Surface Water Treatment Rule | Yes | Nov 1, 2003 |
| Coliform (TCR) | Yes | Oct 1, 2000 |
Frequently Asked Questions
What does EPA SDWIS list for NANWALEK?
How many people does NANWALEK serve?
What violations does NANWALEK have?
What contaminants have been found in NANWALEK water?
Compare beyond Alaska
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest NANWALEK on cumulative violation count (19) and EPA-reported population served (281). Violation-count peers include MURFREESBORO WATERWORKS, NORTH HOWARD RURAL WATER ASSOCIATION, OILDALE MWC.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Nearby Water Systems
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About This Data
NANWALEK (AK2240464) is drawn from EPA SDWIS. Nearby county systems in this extract include HOMER WATER SYSTEM; KENAI WATER SYSTEM; SOLDOTNA; SEWARD. Health-based rows (19 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.