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- Procedure:
- Pure Water 1: Flushed three times and let the full tanks sit 48 Hrs. before taking the water samples. Each day for the sampling period a total of 2 gallons were drained (one in the morning after sampling and one in the late afternoon). 100 ml of water taken for testing each day.
- 5 Gallon Bottled Water Cooler: Obtained a 5 gal. sealed drinking water bottle and a sanitized bottled water cooler. The bottled water and cooler were provided by a major bottled water brand. Dispensed 2 gal. and let the unit sit 48 Hrs. before taking water samples. 100 ml of water was taken for testing each day.
- RESULTS:
- Sample ID
|
- HPC Bacteria
- Concentration
- Pure Water 1
|
- HPC Bacteria
- Concentration
- 5 gal. Bottled Water
|
- Unit
|
| Day 1 Monday |
<1 |
5 |
cfu/mL |
| Day 2 Tuesday |
<1 |
56 |
cfu/mL |
| Day 3 Wednesday |
<1 |
324 |
cfu/mL |
| Day 4 Thursday |
<1 |
1,260 |
cfu/mL |
| Day 5 Friday |
<1 |
>1,500 |
cfu/mL |
| Day 8 Monday |
<1 |
51,500 |
cfu/mL |
| Day 9 Tuesday |
<1 |
49,600 |
cfu/mL |
| Day 10 Wednesday |
<1 |
84,000 |
cfu/mL |
| Day 11 Thursday |
<1 |
82,400 |
cfu/mL |
| Day 12 Friday |
<1 |
90,800 |
cfu/mL |
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