Tatitlek Water System
EPA ID: AK2291130 · 95 people served · 1 ZIP code
Per EPA records, Tatitlek Water System: 17 unresolved violations, 95 people in service area.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 7 (2023) to 3 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Tatitlek Water System Source: EPA SDWIS service area boundaries.
Service area boundary — Grade F
Service Area Demographics
The Tatitlek Water System serves a community with a median household income of $61,875 and an estimated 23 residents across its service area. Approximately 55% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Tatitlek Water System's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 3% of homes in Chugach Census Area, Alaska rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Tatitlek Water System compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 22 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Lead at 1 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
E. coli at 29 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Consumer Confidence Report Rule at 16 mg/L exceeds the EPA maximum of mg/L.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Alaska
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Tatitlek Water System (EPA ID: AK2291130) is a community water system in Alaska that serves approximately 95 people from surface water sources.
This system serves ZIP code 99677 in Tatitlek.
Average Home Safety Score: F (22/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| May 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| May 1, 2025 | Fecal Coliform | Monitoring | Resolved |
| May 1, 2025 | E. coli | Monitoring | Resolved |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| February 9, 2025 | Lead and Copper Rule | Monitoring | Resolved |
| February 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| February 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| February 1, 2025 | E. coli | Monitoring | Resolved |
| January 31, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| December 6, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| October 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| September 29, 2024 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| September 26, 2024 | Lead and Copper Rule | Monitoring | Resolved |
| July 1, 2024 | E. coli | Health-based | Resolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| May 1, 2024 | E. coli | Monitoring | Resolved |
| May 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| April 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| E. coli | Microbiological | 29 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 22 | Yes |
| Consumer Confidence Report Rule | Reporting Failure | 16 | No |
| Fecal Coliform | Microbiological | 12 | No |
| Revised Total Coliform Rule | Microbiological | 11 | No |
| Lead and Copper Rule | Treatment Failure | 10 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | Yes |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Lead | Inorganic | 1 | No |
Health Risk Details
E. coli (EPA limit: Zero tolerance (any positive sample triggers immediate action))
Severe GI illness; potentially fatal kidney failure in children At-risk groups: children under 5, elderly, immunocompromised individuals, pregnant women.
Removal methods: UV disinfection (99.99%), chlorination, reverse osmosis. Find the right filter →
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 99677 | 0.071 mg/L | Yes | N/A |
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
- 99677 — Tatitlek
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Tatitlek Water System (AK2291130) on EPA.gov.
Frequently Asked Questions
Is Tatitlek Water System water safe to drink?
Tatitlek Water System has recorded 21 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Tatitlek Water System serve?
Tatitlek Water System serves approximately 95 people across 1 ZIP code in Alaska.
Where does Tatitlek Water System get its water?
The primary water source is surface water.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Tatitlek Water System (EPA ID: AK2291130) — request the latest Consumer Confidence Report or ask about specific contaminants.