Answer:
PNSDW – Minimum Frequency of Sampling for Drinking-Water Supply System
| Parameter | Population Served | Minimum Frequency of Sampling | Bogo Water District Actual Frequency of Sampling |
Microbiological Examination |
|
Level I |
90 – 50 |
Once in three month s |
|
|
Level II |
600 |
Once in two months |
|
|
Level III |
Less than 5,000 |
One sample monthly |
|
|
Level III |
5,000 – 100,000 |
One sample per 5,000 population monthly |
Minimum of 207 samples monthly |
|
Level III |
More than 100,000 |
20 samples and additional one (1) sample per 10,000 population monthly |
|
|
Emergency Supplies of Water |
Before delivery to users |
||
|
Water Refilling Stations |
One sample monthly |
||
|
Water Vending Machines |
One sample monthly |
Physical and Chemical Analysis |
|
Level I |
Once a year |
||
|
Level II |
Once a year |
||
|
Level III |
Once a year |
1 to 2 times a year |
|
|
Emergency Supplies of Drinking Water |
|||
|
Water Refilling Stations |
Twice a Year |
||
|
Water Vending Machines |
Twice a Year |
Radiological Analysis |
|
Initial Phase |
Four consecutive quarters for one year |
||
|
Routine |
One sample every three years |
1 to 2 times a year |
|
|
Reduce |
One sample every 6 years |
Bogo Water District is currently categorized as Level III water system |