Water Quality in Tok, AK: 10 Violations — Grade A
Grade A · Score 86/100 · 1 water system · Updated 2026-05-03
Tok's water meets all EPA standards with no health-based violations.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
EPA files for Tok, AK document 10 water violations — a record that encompasses health-based exceedances, monitoring and reporting failures, and any other compliance events registered for local public water systems across all available federal compliance records for this area.
Water Quality by ZIP Code in Tok
Water quality varies across Tok's 2 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 99779 | B | 81 | 5 | 0 | View report → |
| 99780 | B | 81 | 5 | 0 | View report → |
Water Quality Overview
Tok, Alaska receives a water quality grade of A with an overall score of 86 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Tok have accumulated 10 EPA violations (all monitoring/reporting type). These violations are tracked across 2 ZIP codes serving approximately 150 people.
What Grade A Means
A grade of A indicates excellent compliance with EPA drinking water standards. Tok's water systems have maintained strong performance in both contaminant monitoring and regulatory compliance.
Lead Levels
The average 90th percentile lead level across Tok water systems is 0.0046 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
Radon Risk
Tok is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Tok
Tok is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 150 people across 2 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 20 enforcement actions against water systems serving Tok. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Tok
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Tok Water Systems
The following contaminants have been detected or caused violations across Tok's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 2 | 2 | No |
| Total Organic Carbon | Disinfection Byproducts | N/A | 2 | 2 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Tok. Recent actions:
| Date | Action Type |
|---|---|
| 2024-05-24 | State Informal Action |
| 2024-04-03 | State Informal Action |
| 2022-10-26 | State Order Extension |
| 2022-06-30 | State Formal Action |
| 2022-06-24 | State Informal Action |
| 2022-06-22 | State Order Extension |
| 2022-06-16 | State Informal Enforcement |
| 2022-05-18 | State Order Extension |
| 2022-04-18 | State Order Extension |
| 2021-12-30 | State Formal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-05-24.
Tok vs. Nearby Alaska Cities
How Tok's water quality compares to similar cities in Alaska:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Tok | A | 10 | 1 | 150 |
| Crooked Creek | C | 75 | 1 | 147 |
| Ouzinkie | A | 6 | 1 | 144 |
| Deering | C | 69 | 1 | 160 |
Common Questions About Tok Water
These are the most common questions residents search for about water quality in Tok, Alaska:
Is Tok water hard or soft? Water hardness varies by source. Tok's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Tok tap water? Tok's water receives a grade of A (86/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Tok? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Tok vs. Alaska Average
Understanding how Tok compares to the broader Alaska average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Tok.
ZIP Codes in Tok
Tok spans 2 ZIP codes. The ZIP with the lowest water quality score is 99779. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.
Frequently Asked Questions
Your Water is Safe — Here's How to Keep It That Way
Grade A is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.