MODULE 10: UNIT 1 - Water Analysis Laboratories Flashcards
It is also known as the Philippine National Standards for Drinking Water (PNSDW) of 2017
DOH A.O. 2017-0010
It is also known as the Rules and Regulations Governing the Accreditation of Laboratories for Drinking Water Analysis
DOH A.O. 2006-0024
What is the objectives of the Philippine National Standards for Drinking Water (PNSDW) of 2017?
This A.O. shall prescribe the standards and procedures on drinking-water quality to
protect public/consumer’s health.
The PNSDW of 2017 shall apply to all drinking water service providers including?
you can just read
Government and private developers and operators
Bulk water suppliers
Water refilling station operators & Water vending machine operators
Ice manufacturers
All food establishments
Residential, commercial, industrial and Institutional buildings that use/supply/serve drinking water
Water testing laboratories
Health and sanitation authorities
Physical and chemical quality of water that refers to the appearance, taste and odor of drinking-water satisfactory to the consumer
Acceptability
Drinking-water supplied to water service providers or associated infrastructures including pumping stations, reservoirs, and pipe lines
Bulk water supply
A person who underwent training for drinking-water sampling and certified by DOH.
Certified sampling personnel
A general term referring to the presence of substances found in water that make water less desirable or unfit for drinking
Contamination
Water intended for direct human consumption or for use in food preparation and related processes.
Drinking-water
The analyte concentration that produces a signal sufficiently stronger than the blank, such that it can be detected with a specified level of reliability during routine operation. Typically, it is the concentration that produces the signal above the reagent water blank signal, and should have a defined precision and bias at the level.
Limits of Quantitation (LOQ)
The highest level of contaminant that is allowed in drinking-water.
Maximum Allowable Level (MAL)
The constituent/contaminant concentration that when processed through the complete method, produces a signal with a 99% probability that is different from the blank.
Method Detection Limit (MDL)
Drinking water must be clear and does not have objectionable _____, _____, and _____.
Taste, Odor, and Color.
The quality of drinking-water shall be measured in terms of its ____________, ________, ________ and _________ constituents.
Microbiological, Physical, Chemical, and Radiological
Give the meaning of the acronym:
MTFT
Multiple Tube Fermentation Technique
Give the meaning of the acronym:
EST
Enzyme Substrate Test
Give the meaning of the acronym:
MFT
Membrane Filter Technique
Give the meaning of the acronym:
CFU
Colony Forming Units
Under the parameter Total Coliform, what are the standard values of the following?
MTFT
EST
MFT
MTFT
< 1.1 MPN/ 100 mL
EST
Absent or <1 MPN/100 mL
MFT
<1 Total Coliform colonies/ 100mL
Under the parameter Thermotolerant Coliform/ E.coli, what are the standard values of the following?
MTFT
EST
MFT
MTFT
< 1.1 MPN/ 100 mL
EST
Absent or <1 MPN/100 mL
MFT
<1 Thermotolerant coliform colonies/ 100mL
Under the parameter Heterotrophic Plate Count (HPC), what is the standard value?
<500 CFU/ mL
The parameters of drinking-water quality shall be classified as?
Mandatory
Primary
Secondary
What are the parameters under Mandatory drinking-water quality?
NTTTACEDLCP
N - Nitrate
T - Thermotolerant Coliform
T - Turbidity
T - Total Dissolved Solids
A - Arsenic
C - Color (Apparent)
E - E. coli
D - Disinfectant Residual
L - Lead
C - Cadmium
P - pH
What are the parameters under Secondary drinking-water quality?
HIXZACCMOSTT
H- Hydrogen Sulfide
I - Iron
X - Xylene
Z -Zinc
A - Aluminum
C - Chloride
C - Copper
M - Manganese
O - Odor
S - Sodium
T - Taste
T - Total coliform
What examination shall be conducted for new or newly constructed water sources?
Initial examination
What examination shall be conducted for existing water sources; and shall cover microbiological, physical, chemical and radiological parameters?
Periodic Examination
True or False:
Only certified sampling personnel shall collect water samples for regulatory purposes.
True
All water samples for regulatory purposes shall be examined only in _______________________.
DOH-Accredited Laboratory
Examination of water samples for radiologic quality shall be done by the ______________________________.
Philippine Nuclear Research Institute (PNRI).
What are the 3 levels of water supply service?
Level 1 - point source
Level 2 - communal faucet system or stand post
Level 3 - waterworks system
Identify what level of water supply service is described?
A protected well or developed spring with an outlet but without a distribution system as it is generally adaptable for rural areas where the houses are thinly scattered.
Level 1 - point source
Level 1 - point source serves an average of ____ households with people having to fetch water from up to ______meters distance.
15 households
250 meters
Identify what level of water supply service is described?
A piped system with communal or public faucets.
Level 2 - communal faucet system or stand post
Level 2 - communal faucet system or stand post serves ______ households within _____ meters distance
4-6 households
25 meters
Identify what level of water supply service is described?
A fully reticulated system with individual house connections based on a daily water demand of more than _____ Liters per person
Level 3 - waterworks system
100 Liters
What is the minimum frequency of sampling for Total coliform and thermotolerant coliform/E.coli of Level 1 and Level 2?
Level 1 - 1 sample every 3 months
Level 2 - 1 sample every month
What is the minimum frequency of sampling for Total coliform and thermotolerant coliform/E.coli of Level 3 based on the population served?
- Less than 5000
- 5000 to 100,000
- More than 100,000
Less than 5000 =
2 samples monthly
5000 to 100,000 =
1 sample per 5000 population + 2 additional samples monthly
More than 100,000 =
1 sample per 10,000 population + 12 additional samples monthly
What is the minimum frequency of sampling for Total coliform and thermotolerant coliform/E.coli of all buildings (residential, commercial, industrial, and institutional buildings) based on the population served?
- Less than or equal to 600
- More than 600
Less than or equal to 600=
1 sample every other month
More than 600 =
1 sample monthly
What is the minimum frequency of sampling for Total coliform and thermotolerant coliform/E.coli of food establishments?
One sample every other month
What is the minimum frequency of sampling for Total coliform and thermotolerant coliform/E.coli of ice plants?
One sample a month
True or false:
Level 1 needs to conduct a sampling for Heterotrophic Plate Count (HPC)
False - not required
What is the minimum frequency of sampling for HPC of Level 2
1 sample every other month (required if treated)
What is the minimum frequency of sampling for HPC of Level 3 based on population served?
- Less than 5000
- 5000 to 100,000
- More than 100,000
Less than 5000 =
2 samples monthly
5000 to 100,000
1 sample per 5000 + additional 2 samples monthly
More than 100,000 =
Required, at least 40% of sampling points
What is the minimum frequency of sampling for HPC of all buildings (residential, commercial, industrial, and institutional buildings) based on the population served?
- Less than or equal to 600
- More than 600
Less than or equal to 600 =
1 sample every other month
More than 600 =
Once a month
What is the minimum frequency of sampling for HPC of food establishments?
1 sample every other month
What is the minimum frequency of sampling for HPC of ice plants?
1 sample a month
All standard values of mandatory parameters shall be applicable to product water
from refilling stations and vending machines, except for the standard values of ____
and _____________________.
pH
Total Dissolved Solids (TDS)
The pH value shall be ____ while the TDS levels of the product water shall not exceed _________ to validate the efficiency of reverse osmosis or distilled process.
5-7
10 mg/L
Water from mobile tanks shall have chlorine residual (as free chlorine) of at least _______ but not to exceed to _______ at the point of delivery.
0.5 mg/L
1.5 mg/L
Bulk water supply shall maintain chlorine residual (as free chlorine) level between ________to ________ or chlorine dioxide residual between__________ to _________ sampling
requirements.
0.3 mg/L to 1.5 mg/L
0.2 mg/L to 4.0 mg/L
Drinking-water service providers shall consult the ______________________________________ or __________________for the interpretations of results.
DOH/Local Drinking Water Quality Monitoring Committee (LDWQMC)
Local health officer
In case of exceedance of standard values of physical and chemical parameters, monitoring shall be carried out for the ________________________________
Next three (3) consecutive months
In emergency water parameters, during the first _______, temporary supply of water shall be provided by the local government unit (LGU).
72 hours
The _______ shall exercise its regulatory function for
the initial issuance of the Certificate of
Accreditation and the ____ shall be responsible for
the renewal of accreditation provided that
appropriate training had been given.
BHFS
CHD
The _______ shall conduct proficiency testing,
confirmatory testing and personnel training
relative to the accreditation of the laboratories.
NRL
The preventive suspension shall not be more than how many days?
60 DAYS
How many days can a laboratory or a personnel file a notice of appeal with the Office of the Secretary and serve a copy of the notice of appeal to the BHFS/CHD?
15 days
Submitted applications that are not processed within ___________ shall be granted the Certificate of Accreditation.
60 days
Freestanding laboratories shall have at a minimum of ___ sq.
meter workspace requirement.
20
The operation of the laboratory shall be under the direction and
supervision of a competent professional who has management training
and at least ________ experience in the theory and practice of
procedures used in water testing.
3 years
The analyst involved in the performance of laboratory procedures must
have the appropriate baccalaureate degree and at least _________
experience in water testing procedures relevant to the service
capability of the laboratory.
2 years
The laboratory aide must have training or at least of _________ experience
on clerical support and sampling.
6 months
There shall be a minimum of __ laboratory personnel for each service
capability. There shall be a minimum of ___ laboratory personnel for multi-service capability
3 personnel for each service capability
4 personnel for multi-service capability
All laboratory records shall be retained in the premises for a minimum of
______________.
5 years
The laboratory shall conduct an internal quality audit at least every ___
months.
6 months
The certificate of Accreditation is valid for _______ and expires on the last day of ______________stated therein.
2 years
December
Failure to submit an application for renewal of
accreditation within ___________ of expiration date of the current Certificate of Accreditation will result in lapse of accreditation and cancellation of
registration. A new application for the issuance of accreditation shall be
required before a laboratory can be allowed to operate.
60 days
Failure to report in writing within ____ days of any substantial change in the
condition of the laboratory (e.g. changes in the physical plant, equipment, or
personnel) may be a basis for the suspension or revocation of the accreditation.
15 days
