Anchorage Water Quality at a Glance
moderate concerns
Is Anchorage Water Safe to Drink?
Yes, Generally Safe – Anchorage’s water comes from protected surface water sources (primarily Eklutna Lake, with Ship Creek as a secondary source) and meets federal drinking water standards. Like many U.S. systems that use chlorine-based disinfection, disinfection byproducts (such as trihalomethanes and haloacetic acids) can be present at low levels. PFAS monitoring and trace metals are also topics some residents follow for extra peace of mind, even when results are within current regulatory limits.
⚠️ Key Concerns for Anchorage Residents
- Disinfection Byproducts: Byproducts such as TTHMs and HAA5 can form when chlorine reacts with natural organic matter; values are regulated and monitored in the distribution system.
- PFAS “Forever Chemicals”: PFAS monitoring is expanding nationwide; any detections in treated drinking water should be viewed in the context of EPA’s current PFAS limits (see PFAS section below).
- Chromium (including chromium-6): Chromium is regulated under total chromium standards; chromium-6 does not currently have a separate federal MCL, but some residents track it as an informational datapoint.
- Environmental Contamination: PFAS has been documented in certain nearby lakes and waterways in the Anchorage area; these findings may relate to historic firefighting foam use and are not the same as current treated tap water results.
Read the full report below for detailed analysis, source information, and actionable recommendations for Anchorage residents.
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Anchorage – Alaska – Water Quality Report 2026: PFAS Testing, Infrastructure Concerns & Safety across your city
The Anchorage Water and Wastewater Utility (AWWU) provides comprehensive water services to approximately 300,000 residents across the Anchorage metropolitan area, including Chugiak-Eagle River, Peters Creek, Eklutna, and Girdwood. As Alaska’s largest water utility, the system encompasses nearly 1,000 miles of water distribution lines, numerous reservoirs and pumping stations, and advanced treatment facilities that deliver almost 8 billion gallons of drinking water annually to Alaska’s largest city and surrounding areas.
AWWU sources its drinking water primarily from Eklutna Lake located in the Chugach Mountains, with Ship Creek serving as a secondary source. Together these surface water sources provide approximately 90% of Anchorage’s water supply, supplemented by ten high-production groundwater wells that contribute the remaining 10%. The Eklutna water is treated at the Eklutna Water Treatment Facility, while Ship Creek water is processed at the Ship Creek Water Treatment Facility. Anchorage’s water consistently meets all federal and state quality standards, benefiting from protected source waters surrounded by wilderness within Chugach State Park. The utility employs approximately 300 professional staff and implements significant investments in water treatment technology, conservation initiatives, and watershed protection to ensure sustainable water supply for future generations in this unique Alaskan environment.
Anchorage Water Quality: Current Status (2024-2026)
Latest Testing Results
- Comprehensive Monitoring: AWWU collects and tests thousands of water samples annually throughout the system, including monitoring at treatment facilities and across the distribution network to support drinking water safety.
- Compliance Status: Anchorage’s water continues to meet federal and state drinking water standards based on the most recent publicly available reporting and monitoring information.
- Pathogen Protection: Anchorage uses a multi-barrier approach (treatment + disinfectant residual) designed to control pathogens, supported by protected source waters and routine monitoring.
Water Sources
- Eklutna Lake: Primary source (approximately 85-90% of supply) located in the Chugach Mountains, fed by snowmelt and glacial runoff from the mountain watershed.
- Ship Creek: Secondary surface water source providing additional supply capacity during peak demand periods, also sourced from protected watershed areas.
- Groundwater Wells: Ten high-production wells throughout Anchorage and Eagle River contribute approximately 10-15% of total water supply, tapping aquifers recharged by mountain sources.
- Watershed Protection: Source waters benefit from surrounding protected lands within Chugach State Park, helping reduce contamination risk.
Advanced Treatment Technology
- Eklutna Water Treatment Facility: The primary treatment facility utilizes a multi-barrier approach including coagulation, flocculation, sedimentation, filtration, and disinfection to remove particulates and support microbial safety.
- Ship Creek Treatment Plant: Similar multi-barrier treatment process for surface water from the Ship Creek watershed.
- Disinfection Process: Disinfection is maintained throughout the distribution system to help prevent microbial regrowth. Fluoride may be added in accordance with local requirements and operational practice.
Infrastructure Management
- System Storage: Over 50 million gallons of storage capacity in strategically located reservoirs throughout the service area to support reliable water delivery.
- Distribution Network: Nearly 1,000 miles of water distribution pipelines (including approximately 850 miles of distribution mains), supplemented by booster pumps and pressure regulating valves to maintain service pressures throughout the system.
- Monitoring Technology: SCADA (Supervisory Control and Data Acquisition) systems support real-time operational monitoring of water treatment and distribution performance.
Community Support Initiatives
AWWU provides customer support through online account management, payment options, and emergency services available 24/7 at (907) 564-2700. Educational outreach helps residents understand water quality, conservation practices, and the value of Alaska’s source waters. The utility publishes annual water quality reports that summarize regulated test results and operational updates for customers. AWWU’s workforce—including treatment plant operators, engineers, laboratory technicians, maintenance crews, and customer service representatives—supports ongoing operations and public communication.
Recommendations for Anchorage Residents
Monitor Your Water
Contact AWWU at (907) 564-2700 to report any water quality concerns or changes in taste, odor, or appearance. For lead service line inquiries, call (907) 311-1300 or email info@lcr.awwu.biz. Residents with older plumbing (pre-1986) may wish to test for lead and other metals, especially after periods of non-use.
Conserve Water
Despite Anchorage’s abundant water resources, conservation is important. Install efficient fixtures, promptly repair leaks, and consider native landscaping adapted to Alaska’s climate that requires minimal irrigation, especially during summer months.
Consider Home Filtration
While Anchorage’s water meets all federal standards, residents may choose NSF-certified filters for drinking water to reduce chlorine taste/odor and for extra peace of mind around regulated disinfection byproducts and PFAS. Activated carbon filters can help reduce chlorine taste and odor, while reverse osmosis systems provide more comprehensive treatment.
Prepare for Winter
Alaska’s extreme cold requires special plumbing precautions. Insulate pipes in unheated areas, maintain a minimum indoor temperature even when away, and know how to safely thaw frozen pipes. During extended absences, consider shutting off your water and draining pipes.
Report Issues
Contact AWWU Customer Care at (907) 564-2700 (available 24/7) for water main breaks, pressure problems, or quality concerns. For sewer issues, contact AWWU directly; for stormwater drain problems, call Municipality of Anchorage Street Maintenance at (907) 343-8277.
Frequently Asked Questions
Is Anchorage’s tap water safe to drink?
Yes, Anchorage’s tap water meets federal and state drinking water standards. The city’s water comes from Eklutna Lake, Ship Creek, and deep groundwater wells, all of which benefit from minimal human impact and undergo comprehensive treatment including filtration and disinfection.
AWWU conducts ongoing monitoring across its system to ensure water quality and safety. The utility publishes annual water quality reports summarizing regulated results for customers. Anchorage is fortunate to have strong source water protection due to surrounding protected lands.
Why does my water sometimes taste different in winter?
Seasonal taste variations can occur due to several factors specific to Alaska’s unique environment:
1. Temperature changes: Colder water temperatures can affect how taste compounds are perceived
2. Source water shifts: During winter months, there may be adjustments in the balance of surface water and groundwater sources
3. Treatment adjustments: Seasonal adjustments to treatment processes may be necessary to address changing water characteristics
4. Home plumbing: In extremely cold temperatures, indoor plumbing may contribute to taste changes
If taste issues persist or seem unusual, contact AWWU at (907) 564-2700 for assistance. Running cold water for a few minutes after periods of non-use can often improve water quality from your tap.
Should I be concerned about lead in Anchorage’s water?
AWWU has never used lead pipes in its system, and Anchorage’s water treatment and distribution systems are designed to limit corrosion. However, homes built before 1986 may have plumbing fixtures or solder containing lead that could potentially affect water at the tap:
• Service Line Survey: AWWU is completing a federally-required lead service line inventory to confirm service line materials and identify any locations needing follow-up
• Water testing: AWWU tests for lead and copper as required and reports results in its annual water quality reporting
• Corrosion control: The utility optimizes water chemistry to reduce the chance of metals leaching from household plumbing
• Home precautions: If your home has older plumbing, running cold water for 30-60 seconds before use for drinking or cooking can reduce potential exposure, especially after periods of stagnation
For questions about lead service lines, contact AWWU at (907) 311-1300 or email info@lcr.awwu.biz.
Are there water restrictions in Anchorage?
Anchorage generally does not implement mandatory water restrictions due to its reliable water supply from Eklutna Lake, Ship Creek, and groundwater wells. However, voluntary conservation is always encouraged:
Normal Operations:
• No mandatory restrictions on water use during normal operations
• Conservation is encouraged as good environmental stewardship
Emergency Situations:
In rare emergency situations such as major infrastructure failures or natural disasters, temporary restrictions may be implemented:
• Limitations on non-essential water uses
• Public notification through media and emergency alert systems
For current information on water system status, contact AWWU at (907) 564-2700 or visit awwu.biz.
Quality News About Your Water
Get the comprehensive water quality news coverage you need with our dedicated US Water News Service. From coast to coast, we deliver in-depth reporting and expert analysis on PFAS contamination, EPA regulatory changes, infrastructure developments, and emerging water safety issues affecting communities nationwide. While mainstream media only covers the biggest stories, we provide the detailed, ongoing coverage that helps you understand the full scope of America’s water challenges. Whether you’re a concerned citizen, water professional, or community leader, our daily updates and analytical insights keep you informed about the issues that matter most to public health and environmental safety.
Contaminants of Concern
Disinfection Byproducts
Source: Formed when disinfectants such as chlorine used in water treatment react with naturally occurring organic matter; levels can vary seasonally based on water temperature and organic matter.
Health Effects: Long-term exposure to elevated levels of regulated disinfection byproducts (TTHMs and HAA5) may increase risk of certain health effects. EPA regulates these by maximum contaminant levels to reduce long-term risk.
Current Levels: Monitored on a routine schedule throughout the distribution system with results maintained below EPA maximum contaminant levels. EPA Limits: 80 ppb for total trihalomethanes (TTHMs) and 60 ppb for haloacetic acids (HAA5)
PFAS “Forever Chemicals”
Source: PFAS in the Anchorage area has been linked to historic firefighting foam use and legacy contamination near certain facilities. Environmental monitoring has identified PFAS in some nearby surface waters, which is separate from current treated drinking water results.
Health Effects: PFAS are a class of long-lasting chemicals that can persist in the environment and the body. Because they are widespread, regulators are expanding monitoring and setting enforceable limits for certain PFAS compounds in drinking water.
Current Status: Anchorage’s treated drinking water has reported low-level PFAS detections in prior monitoring. EPA Limits (NPDWR): 4 ppt for PFOA, 4 ppt for PFOS, and 10 ppt each for PFNA, PFHxS, and HFPO-DA (GenX), plus a hazard index approach for certain PFAS mixtures.
Please read – our information
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