Potable Water Supply Requirements for Ground Forces

Question 1

responsibilities of the CO with potable water in the field

Answer 1

ensures sufficient water quantities
enforce water discipline
inform troops dangers of untreated water
know the proper methods of disinfection

Question 2

engineering officer responsibilities in regards to potable water in the field

Answer 2

provide sufficient potable water

construction, operation, and maintenance of the facilities used for collection, treatment, and distribution

selecting raw water sources

Question 3

MDR responsibilities in regards to field potable water

Answer 3

advice CO

assist engineers

conduct bacteriological testing

test halogen

inform engineers

chemical analysis

Question 4

general rule of thumb when picking acceptable water supply sources

Answer 4

all water sources in the field should be considered unsafe until they have been evaluated and approved by the medical department

Question 5

what are the three influences on water choice in the field

Answer 5

quality

quantity

accessibility

Question 6

potential water sources

Answer 6

public water supply

surface water

ground water

commercial bottled water

Question 7

examples of surface water

Answer 7

rivers, streams, lakes, ponds, seas, and oceans

Question 8

how far should ground water be from know contamination

Answer 8

30 yrds upgradient

Question 9

types of field water treatment units

Answer 9

Military ROWPU
Marine Corp LMT
Lightweight water purifier (LWP)
Tactical Water purification system

Question 10

ROWPU (Reverse Osmosis Water Purification Unit)

Answer 10

most common

fresh, brackish, sea water

Question 11

Marine Corp Lightweight Medium Tactical (LMT) freshwater purification unit

Answer 11

non reverse osmosis
produces 3,000 gallons per hour
only fresh water

Question 12

lightweight water purifier (LWP)

Answer 12

used for smaller units, SO units, and temp medical facilities

125 gallons per hour

Question 13

Tactical Water Purification System

Answer 13

an International Organization for Standardization (ISO) compatible flat rack and transportable by the load handling system

1500 gallons of water per hour

replacing the ROWPU

Question 14

required chlorine residuals

Answer 14

point of production-2ppm FAC/30min

delivery to unit level storage (buffalos/5 gal containers)- 1ppm FAC

for canteens- .2 ppm FAC

Question 15

Required Chlorine residual for natural surface water in emergency

Answer 15

5 ppm after 30 min contact time

Question 16

secondary storage/unit level procedures for low chlorine residuals

Answer 16

between .2 and 1 ppm FAC: re chlorinate to 1ppm

Question 17

types of containers for storing potable water in the field

Answer 17

PWS/DS 
3,000 Gallon Onion Tank
LHS 
FAWPSS 
SMFT 
TWDS 
WDWMS

Question 18

Portable Water Storage and Distribution System (PWS/DS)

Answer 18

primary means for receipt of bulk drinking water

capacity is dependent on number and size of fabric tanks assigned

Question 19

3,000 Gallon Onion Tank

Answer 19

highly mobile, manually inflatable fabric water tank

Question 20

Load Handling System (LHS) water tank rack (hippo)

Answer 20

2,000 gallons

recirculation water pump

Question 21

Forward Area Water Point Supply System (FAWPSS)

Answer 21

gas or diesel operated unit

centrifugal pump to distribute water

Question 22

Semitrailer-Mounted Fabric Tank (SMFT)

Answer 22

only drinking water
rubberized tanks
3,000-5,000 tanks

Question 23

Tactical Water Distribution System (TWDS)

Answer 23

highly mobile

distributes water up to 10 miles on level terrain

Question 24

Water Distribution and Waste Management System (WDWMS)

Answer 24

3 modes

water, hospital, deployable medical system (DEPMEDS)

Question 25

disinfecting method one field operations

Answer 25

chlorinate the water in container to 100 ppm FAC

keep wet for 60 min

rinse the container and spigot twice with potable water

Question 26

disinfecting method two field operations

Answer 26

(if water or chemical are in short supply)

5 gallons of water with 100ppm chlorine

swab interior with solution every 10 min for 60 min.

rinse the container and spigots twice with potable water

Question 27

what is the alternative procedure for field ops water container disinfection

Answer 27

chlorinate to 10ppm FAC

hold for 24 hrs.

rinse the container and spigots twice with potable water