Chapter 2: Water Supply

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75 Terms

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Distillation

It is the process of separating organic and inorganic solids from water by evaporation (vaporization) followed by cooling and condensation.

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Filtration

It is the process of separating solids from a liquid by means of a porous substance such as permeable fabric or membrane or layer of inert media.

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Coliform Organisms

any rod- shaped, non- spore- forming, gram negative bacteria capable of growth in the presence of bile salt.

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undergone additional processing

Refilled water /product water- source water that has and product of multistage purification technology.

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Deionization

It is the removal of the ionized minerals and salts (both organic and inorganic) from a solution by a two- phase ion- exchange procedure.

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earths surface

Spring- ground water seepage visible at the due to hydrostatic gradient or head.

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Contamination

It is the introduction of materials not normally found in water that make the water less desirable or unfit for its intended use.

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Ultraviolet Light Sterilization

Is a process of killing active bacteria and spores in water with the use of ultraviolet rays.

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Disinfection

It is a water treatment processes designed to destroy disease- causing organisms.

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Cistern

a water- tight tank used to store water.

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Public or Private Water Supply System

Is a government or private owned system for the provision of potable water for human consumption.

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microbial populations

Most probable number or MPN- statistical method of determining .

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Most probable number or MPN

statistical method of determining microbial populations

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Reservoir

Is a pond, lake or basin, either natural or artificial, designed for storage, regulation and control of water.

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25 meters

- Minimum distance of retail water system or refilling station from direct sources of pollution.

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Test Well

Is an excavation made to determine the quality and quality and quantity of water.

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Artesian Well

is a well where water is confined under hydrostatic pressure between two relatively impervious layers such as rock formations.

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Level I (Point Source)

Is a protected well or developed spring with an outer but w /o distribution system.

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Sanitary Seal

Is a mixture of cement and water placed in the annular space of the well casing and drillhole to seal space and about 3 meters deep to prevent the intrusion of water.

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Dug Well

A well normally circular or rectangular in shape, with diameter ranging from 1 to 1.5 meters.

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rotary drills

Drilled Well is a well constructed by percussion or .

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Drilled Well

Is a well constructed by percussion or rotary drills

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Deep Well

A well with depth greater than 20 meters.

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Sanitary Permit

- permission or certification that the establishment complied with the existing minimum sanitation requirements upon evaluation or inspection.

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Well

is a man-made hole used for recovering ground water from the water bearing strata by digging, boring, drilling or by any other method

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Artesian Well

is a well where water is confined under hydrostatic pressure between two relatively impervious layers such as rock formations

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Bored Well

a well constructed by manually driven augers into the ground

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Driven Well

a well constructed by driving an iron pipe

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Drilled Well

a well constructed by percussion or rotary drills

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Dug Well

a well normally circular or rectangular in shape, with diameter ranging from 1 to 1.5 meters

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1 to 1.5 mere

Dug well must be with a diameter ranging from _ meters.

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Test Well

an excavation made to determine the quality and quality and quantity of water

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Shallow Well

a well measured from the natural ground surface with depth of not more than 20 meters

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Surface Water

a mixture of surface run-off and groundwater

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Cistern

a water-tight tank used to store water

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Reservoir

a pond, lake or basin, either natural or artificial, designed for storage, regulation and control of water

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Spring

ground water seepage visible at the earths surface due to hydrostatic gradient or head

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Level I (point source)

a protected well or developed spring with an outer but w/o distribution system

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Level II (communal faucet system or standposts)

a system composed of a source, a reservoir, a piped distribution network and communal faucet

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Level III (waterworks system or individual house connections)

a system with a source, a reservoir, a piped distribution network and household taps

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Potable Water/ Safe Drinking Water

water that is free of microorganism or disease-producing bacteria (pathogens)

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Polluted Water

water whose physical, chemical, bacteriological, biological and radioactive properties have been altered

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Coliform Organisms

any rod-shaped, non-spore-forming, gram negative bacteria capable of growth in the presence of bile salt

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Complete Treatment

a series or combination of water treatment processes

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Contamination

the introduction of materials not normally found in water that make the water less desirable or unfit for its intended use

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Disinfection

water treatment processes designed to destroy disease-causing organisms

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Doubtful Source

source that is subject to recontamination

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Water Hauler

any person, firm or company who transports, stores, delivers and operates equipment used to transport or deliver water to human consumption

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Water Supplier

responsible for source development, water abstraction, treatment and distribution of water

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Well Driller

who undertake well drilling work or activities for the purpose of extracting ground water

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Public or Private Water Supply System

government or private owned system for the provision of potable water for human consumption

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Local Health Authority

a government official or employee responsible for the application of a prescribed health measure in a local political subdivision

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Local Health Officer

the provincial or municipal health officer

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Sanitary Survey

an activity to inspect and investigate the existing environmental conditions around the water source which may affect the quality of the water

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Sanitation Inspector

a government official or personnel employed by the national, provincial, city or municipal govt, who enforces sanitary rules, laws and regulations and implements environmental sanitation activities

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Drinking water site clearance

shall be secured by any person who intends to drill, construct, alter or repair water supply system

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Sanitary Seal

a mixture of cement and water placed in the annular space of the well casing and drillhole to seal space and about 3 meters deep to prevent the intrusion of water

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Pipe Lines

pipes used to transport water

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Deionization

the removal of the ionized minerals and salts (both organic and inorganic) from a solution by a two-phase ion-exchange procedure

60
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Distillation

the process of separating organic and inorganic solids from water by evaporation (vaporization) followed by cooling and condensation

61
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Filtration

the process of separating solids from a liquid by means of a porous substance such as permeable fabric or membrane or layer of inert media

62
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Reverse osmosis/hyperfiltration

process for the removal of dissolved ions from water in which pressure is used to force water through a semi-permeable membrane

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Ultraviolet light sterilization

process of killing active bacteria and spores in water with the use of ultraviolet rays

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Retail water system/refilling station

refilled water being sold and placed in the refilled water container in the refilling station

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Refilled water/product water

source water that has undergone additional processing and product of multistage purification technology

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Bulk water

water in a container of five gallons or more in volume coming from refilling stations

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Sanitary Permit

permission or certification that the establishment complied with the existing minimum sanitation requirements upon evaluation or inspection

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Sanitary Clearance

clearance issued by the local health office to food or water delivery vehicles, mobile water tankers and similar vehicles that comply with the design, construction, specification and other requirements of the department

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Certification of Potability of Drinking Water

certification certifying the potability and safeness of source drinking water for human consumption based on PNSDW

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0.20 to 0.50 ppm

amount/dose of free residual chlorine to be maintained until water reaches the costumer and the farthest point in the distribution system

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50-100 ppm

amount/ dose of chlorine solution to be used in disinfecting Level I water supply facility

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50 meter

distance of drilling of water well from a cemetery is that is prohibited?

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25 meters

distance of pit privy or toilet facilities from the well being drilled.

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25 meters

Minimum distance of retail water system or refilling station from direct sources of pollution

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24 hours

Maximum holding time of stored refilled water