- SPECIAL BULLETIN -

GWA Update

The Guam Waterworks Authority (GWA) reports that as of 12 p.m., 90 of 98 wells are online, with 25 wells on standby power generation and 65 wells on the island-wide power system. GWA is aware of multiple reports of low to no water pressure affecting approximately 2,501 customers across the island - predominantly in parts of Yigo, Astumbo, Malesso’, Mangilao and Sånta Rita-Sumai.

GWA estimates that 41,142 customers have had water services restored. In areas where water service has been restored, isolated parts of those areas may still experience low to no pressure from damaged service lines. To report a damaged water service line, call GWA Dispatch at 671-646-4211.

Residents are reminded that even as pressure is restored, outages and instances of low to no pressure may still occur as system adjustments are still being performed to respond to the power system. The Guam Power Authority (GPA) continues working closely with GWA to restore power to wells impacted by the storm. Residents are further reminded that reservoir levels are in recovery and service at specific locations within the distribution system may vary throughout the day. Customer demand during peak hours will affect the rate at which pressure can build to acceptable service levels as reservoirs are still filling.

GWA ENFORCING WATER CONSERVATION

In accordance with 28 GAR §2103(i): Whenever, in the opinion of GWA and in the interest of the public, special conservation measures are advisable in order to forestall water shortage and a consequent emergency, GWA may restrict the use of water by any reasonable method of control.

GWA inspectors are visiting car wash facilities and operations to seek compliance with special water conservation measures. GWA has received voluntary compliance from car wash facilities, car detailing shops, car rental companies and car dealerships across the island who have ceased car washing activities. As GWA personnel work to restore reservoir levels and system pressure, the community is advised to practice strict water conservation during recovery efforts. Refrain from washing vehicles and pressure washing or flushing driveways and sidewalks and limit water use in the kitchen and bathroom. Non-essential water usage may place unnecessary stress on pressure within the water distribution system. 

Additionally, there may be an increased risk of backups and sewer overflows as wastewater pump and plant operations have been affected by the storm – reducing proper collection of wastewater from customers connected to GWA’s sewer.

PRECAUTIONARY BOIL WATER NOTICE STILL IN EFFECT FOR SOME RESIDENTS

Results from 99 samples collected throughout the water distribution system from April 15 – 16, 2026 have returned NEGATIVE results for bacterial contamination. Sample collection was performed in parts of Agana Heights, Assan-Ma’ina, Barrigada, Barrigada Heights, Dededo, Hagåt, Hagåtña, Harmon, Inalåhan, Mangilao, Malesso’, Malojloj, Nimitz Hill, Piti, Sånta Rita-Sumai, Talo’fo’fo, Tamuning, Tumon, Yona, and Yigo.

GWA’s Utility Compliance Laboratory will sample more of the system as water continues to be restored throughout the island. Results will be reported once analysis is complete. The precautionary boil water notice (PBWN) issued by GWA on April 16 as announced in JIC RELEASE No. 33 remains in effect for some residents:

The PBWN does not apply to customers who did not experience any loss in water service. This PBWN is issued as a result of a sustained loss of pressure in parts of the island’s distribution system as a result of Super Typhoon Sinlaku. A sustained loss in pressure within the distribution system may result in potential, but unconfirmed bacterial contamination in your drinking water.

Customers who experienced a loss in water service for 48 hours or less may wish to take precaution and are advised of the following:

• DO NOT DRINK THE WATER WITHOUT BOILING IT FIRST.

• Bring all water to a boil, let it boil for three (3) minutes, and let it cool before using.

• Boiled water should be used for drinking, making ice, brushing teeth, washing dishes and food preparation until further notice.

• Boiling kills bacteria and other organisms in the water.

For customers who experienced a loss in water service for 48 hours or more, it is MANDATORY to boil your water and:

• DO NOT DRINK THE WATER WITHOUT BOILING IT FIRST.

• Bring all water to a boil, let it boil for three (3) minutes, and let it cool before using.

• Boiled water should be used for drinking, making ice, brushing teeth, washing dishes and food preparation until further notice.

• Boiling kills bacteria and other organisms in the water.

Bacterial contamination can occur when increased run-off enters the drinking water source, if there is a loss of line pressure to less than 5psi, prolonged, sustained loss of water service, or failure in the water treatment process.

WATER TANKERS & FLEXTANKS

Tankers and flextanks have been staged in different parts of the island. Residents haul water from the following sites: Chalan Okso on Route 15, Dededo Senior Center, Barrigada Mayor’s Office, Dero Road in Ordot, Jesus G. Cruz Street in Barrigada Heights, Gill Breeze in Yigo, Kalen Mamalai Piga in Dededo, Mangilao Church, Maina Church, the Yigo gym and Mount Santa Rosa in Yigo. Residents are advised to bring their own containers to store and haul water from the flextanker and tanker sites 

GPA Update

The Guam Power Authority (GPA) provided a recovery summary that summarizes restoration progress to the Island-Wide Power System (IWPS). As of 9 a.m., Monday, April 20, 2026:

Feeders/Circuits: A total of 60 feeders/circuits are energized today of the 63 distribution feeders/circuits.

Substations: A total of 29 critical substations energized of the 29 total major GPA substations.

TODAY’S KEY OBJECTIVES INCLUDE:

• Crews are now concentrating on restoring the remaining 3 distribution feeders/circuits.

• During this stage of recovery, some energized feeders may still leave pockets of isolated customers with damages. GPA is now restoring service to those remaining pocket outage customers to get as many customers back in service.

• Crews will then shift focus to significant damages to include transformer replacements, service lines, meters, and other necessary components. We are one day away from addressing these types of isolated outages.

• Continue working on urgent needs across the island.

FOR CUSTOMERS WHO REMAIN WITHOUT POWER:

• Customers may be on feeders that have not yet been energized.

• In some areas, power may be restored to main lines while additional repairs are still needed on transformers, service lines, or customer connections.

• Customers may also be experiencing isolated damage that requires crews to return after main circuits are restored.

• If surrounding areas have power, customers may be part of a smaller outage pocket.

• Customers are asked to limit calls to the GPA Dispatch Center (PSCC) to critical issues such as downed power lines, blown transformers, low voltage conditions, or other situations that may present a safety concern.

GENERAL NOTIFICATIONS:

• Individuals with medical needs: Those requiring electrically powered life-support or oxygen tanks or similar devices should arrange to stay at an alternate location where electricity is available, such as a hospital or with family or friends who have power restored. Be prepared to bring your oxygen supplies, medical equipment, and medications with you.

• Personal use of generators: GPA asks that you ensure your main breakers are opened (off position) when operating your generator. This is for the safety of the crews and your equipment.

• Carbon monoxide safety hazard: It is a colorless, odorless gas that can cause serious illness or death. The risk increases during outages when generators or fuel-powered equipment are used improperly. Never use generators, grills, or portable stoves indoors. Keep equipment away from doors, windows, and vents, and never run vehicles inside garages. If you feel dizzy, nauseated, or lightheaded, move to fresh air immediately. If you suspect carbon monoxide exposure, call emergency services immediately.

• Voltage fluctuations during restoration: As power is restored, some customers may experience temporary voltage fluctuations such as flickering lights, dimming, or partial power. Customers are advised to shut off their main breaker and report the issue to GPA.

• Please stay away from all down lines and equipment as they may still be energized and can cause harm if you come in contact with the lines or equipment. Consider such situations as dangerous and life threatening. To report downed power lines, contact GPA Trouble Dispatch at (671) 475-1472/1473/1474. Customers may also email customersfirst@gpagwa.com or send a direct message on GPA’s Facebook or Instagram page. Please provide the exact location or address, contact information and condition of location when submitting your report.

• GPA understands that residents are eager to have service fully restored and thanks the community for the outpouring of support shown to crews working in villages across the island. Residents are asked to allow crews to work unimpeded. While crews understand the urgency and concerns, stopping them to ask about restoration timelines delays progress and creates safety risks. Allowing crews to continue their work and focus on their tasks at hand while concentrating on repairs will help ensure power is restored as quickly and safely as possible.

• GPA will continue providing updates as restoration efforts progress.

To get the most up-to-date information, visit www.guampowerauthority.com and click on the Post-Typhoon Sinlaku Restoration Updates banner or follow our official social media pages: Facebook: https://www.facebook.com/GuamPowerAuthority, Instagram: https://instagram.com/guampowerauthority.

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For the latest updates from the Joint Information Center, visit https://ghs.guam.gov/.