The Ministry of Health declares areas A3 and D2 of the Navy drinking water system safe
Posted on March 13, 2022 in Navy Water System Incident, Newsroom
WHAT: The State of Hawaii (DOH) Department of Health declares areas A3 and D2 of the Drinking Water System Restoration Plan safe; Amended Health Notice; Residents allowed to drink tap water
OR: Area A3, Iroquois Point
Click here to view the completed checklist that supports the DOH Health Advisory Amendment for Area A3.
Area D2, Hickam, Hale Na Koa, Officers Field, Onizuka Village
Click here to view the completed checklist that supports the DOH Health Advisory Amendment for Area D2.
Click here for an updated map on the state of the area.
WHEN: March 13, 2022
BACKGROUND: All users of the Navy water system in areas A3 and D2 can now use water for all purposes including drinking, cooking and oral hygiene. This includes consumption by pets.
The source water for the Navy Water System comes from the Navy’s Waiawa Well. Water from the Waiawa well has been tested to verify that it is safe to drink. The Navy’s Red Hill well, which is contaminated, has been disconnected from the water supply.
DOH and U.S. Environmental Protection Agency (EPA) subject matter experts have completed a final review of all sample data and how the Navy water system maintains operations to ensure safe drinking water.
The DOH and EPA have overseen months of work to provide individuals and families in Areas A3 and D2 with assurance of safe drinking water. This included supervising flushing operations to confirm that the Navy followed flushing and testing protocol to verify that contamination was removed from the potable water system.
An independent third-party laboratory incorrectly reported the presence of bis(2-chloroethyl)ether (BCEE) in a sample from area A3. The Interagency Drinking Water System Team (IDWST) investigation determined, in agreement with the laboratory, that the initial BCEE results were a false positive. The IDWST, EPA, and DOH agree with this conclusion. The IDWST resampled all locations where BCEE was initially detected. The laboratory examined the original samples and the new samples and did not detect BCEE in any of them.
One of the residences sampled by DOH in Area A3 exceeded the DOH’s Action Level and Incident Specific Parameter of 15 parts per billion for lead. The residence sample result for lead was 29.33 parts per billion. The residence was resampled, rinsed again, and then sampled again at the same location and at another location within the residence. Subsequently, test results for all samples were below the action level. Area A3 will be further tested as part of a long-term monitoring plan.
Samples taken from a fire hydrant in the D2 area were initially tested above the DOH’s total petroleum hydrocarbon (TPH) screening level of a combined total of 211 parts per billion. The hydrant was flushed out and retested. A nearby fire hydrant was also tested. Subsequently, both hydrants achieved the DOH’s TPH screening level.
A sample taken from the D2 area was initially tested above the specific DOH incident parameter for beryllium. The residence was rinsed and resampled. Subsequently, all homes and buildings sampled meet the DOH’s beryllium screening level of four parts per billion.
A sample taken from the D2 area was initially tested above the DOH incident specific parameter for total organic carbon. The building was rinsed and re-tested. Subsequently, all sampled homes and buildings meet the DOH’s Total Organic Carbon Incident Specific Parameter of 2,000 parts per billion.
Samples taken from the Hickam Officers Club in Area D2 tested above the DOH maximum contaminant level of five parts per billion for methylene chloride, also known as dichloromethane. The building is closed for renovation. The DOH required that the building continue to be disconnected from the water distribution system. The DOH will also require the Navy to take additional steps to remediate contamination, protect workers and resample before the building can reopen to the public.
The IDWST joint plan to sample more than 900, or at least 10% of households, and 100% of schools and child development centers across the entire water system in the Marine, provides accurate data to determine that the water in all homes and buildings is safe. . Other houses and buildings will be sampled as part of a long-term monitoring plan.
The decision to amend the health advisory and declare the water in areas A3 and D2 safe was made after multiple lines of evidence from the DOH confirmed that no contamination is entering the Navy water system. and that no contamination remains in areas A3 and D2. The DOH investigation showed:
Reported sources of contamination are contained
- The Navy’s Red Hill Well is physically disconnected from the Navy’s water system.
The spring water from the Waiawa well is drinkable
- Sample results show that the water meets state and federal regulations and project screening levels of incident-specific parameters.
No further contamination occurs in the water system
- A Cross Connection Control survey shows that the distribution system is protected, resulting in no additional source of contamination.
The water in the distribution system is drinkable
- Completion of area flushing plan implementation demonstrates that the entire area is flushed.
- Sample results show that the water in the distribution system meets state and federal regulations and project screening levels of incident-specific parameters.
- Drinking water does not show shine, olfactory evidence or other qualitative methods of petroleum.
The water in the plumbing of houses/buildings is potable
- The flushing plan includes procedures to ensure that no service connections will re-contaminate the distribution system.
- Samples were taken from homes and buildings three days after flushing. This stagnation period was incorporated to detect possible leaching of contaminants from pipes or other plumbing items.
- Sample results show that the water in the home/building premise plumbing meets state and federal regulations and project screening levels of incident-specific parameters.
If users of the Navy water system have a question or concern regarding the quality of their water, please contact the DOH at [email protected] or 808-586-4258.
RESOURCES: Click here for a complete list of DOH selection criteria.
Click here to see the validated test results.
Click here for a pager on how to read lab results.
Click here to view the complete data package for Area A3 that led the DOH to issue this amendment.
Click here to view the complete data package for Area D2 that led the DOH to issue this amendment.
PDF: DOH Declares Navy Potable Water Distribution System in Areas A3 and D2 Safe