Accession Number:

ADA564253

Title:

Maintaining Water Supplies to a Remote Island Population When Source Water Becomes Contaminated

Descriptive Note:

Briefing charts

Corporate Author:

ARMY PUBLIC HEALTH COMMAND ABERDEEN PROVING GROUND MD

Personal Author(s):

• Manint, Jerry

Report Date:

2011-05-01

Pagination or Media Count:

23.0

Abstract:

On December 8, 2008, the island of Roi-Namur had high wave activity onset of dry season. Nearly all of its lenswells were contaminated with salt water. A drinkable chloride concentration is 250 mgL ocean water chloride concentration is 35,000 mgL. The only well not contaminated had a history of Volatile Organic Compound VOC contamination. There are roughly 12 days of raw water in storage under normal operation, and roughly 30 days of treated water in storage under normal operation. The Armys goal was to utilize the contaminated lenswell to supplement the islands drinking water. Water treatment consisting of Granular Activated Carbon GAC filters was initiated to extend the water supply. Other water options barge water from Kwajalein Island, dig new wells, or install new treatment for brackish water reverse osmosis purification units, or ROWPUs. Temporary ROWPUs were installed on Roi-Namur on February 6, 2009. ROWPU is costly. Rainfall is needed and the estimated recovery time is 2 years 2011. A permanent reverse osmosis system was installed in January 2010. There was very good lenswell water quality this year.

Descriptors:

• *BRACKISH WATER
• *CHEMICAL CONTAMINATION
• *KWAJALEIN ATOLL
• *PUBLIC HEALTH
• *WATER POLLUTION
• *WATER SUPPLIES
• *WATER TREATMENT
• ACTIVATED CARBON
• ARMY
• CHLORIDES
• DRINKING WATER
• PACIFIC OCEAN ISLANDS
• PURIFICATION
• RAINFALL
• REMOTE AREAS
• REVERSE OSMOSIS
• SYMPOSIA
• WATER FILTERS
• WATER QUALITY

Subject Categories:

• Industrial Chemistry and Chemical Processing
• Hydrology, Limnology and Potamology
• Fluid Mechanics
• Water Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE