User Tools

Site Tools


water_testing

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
water_testing [2012/10/26 03:50]
trisha created
water_testing [2015/02/11 17:58] (current)
Line 1: Line 1:
 ====== Water Tests ====== ====== Water Tests ======
  
-=== Weekly Bacteriological Test === +NWT Public Pool Regulations ​give details ​for water tests.
- +
-The Public Pool Regulations ​state: +
- +
-• At least one bacteriological sample of the pool water a week must be submitted to a water testing laboratory ​for examination. +
- +
-• A bacteriological sample must be collected in an approved bottle from below the water surface near an outlet, while the pool is in use. +
- +
-• When you submit pool tests to the lab, you will receive tests results back within a few days (they are usually sent to the Health Centre) +
- +
-• The coliform count in the pool water must not exceed two colonies for each 100 ml when the Standard Membrane Filter Technique is used. +
- +
-• If there is a problem with the results of your tests, the Environmental Health Officer will usually contact you; nevertheless,​ it is important to always look at the test results to ensure that the values are within the allowable ranges +
- +
-=== Daily Testing === +
- +
-The Public Pool Regulations state: +
-       +
-• Tests must be taken each day of pool operation at least once every four hours +
- +
-• Test ranges should be as follows: +
- +
-  +
-TEST  +
- ALLOWABLE RANGE IDEAL RANGE +
-Total alkalinity +
- 80 to 200 mg/l 80 to 120 mg/l +
-Calcium hardness +
- 100 to 200 mg/l 150 to 200 mg/l +
-pH (pool) +
- 7.2 to 7.8 7.6 +
-pH (hot tub) +
- 7.2 to 7.6 7.4 to 7.6 +
-Free available chlorine (pool)  +
- 1.0 – 1.5 mg/l 1.2 mg/l +
-Total residual chlorine (pool)  +
- not greater than 2.5 mg/l  +
-Free available chlorine (hot tub) +
- 5 to 10 mg/l  +
-Temperature (pool) +
- 26°C - 30°C.  +
-Temperature (hot tub) +
- No greater than 40oC +
  
 +//**Weekly Bacteriological Test**//
  
 +NWT Public Pool Regulations state:
 +  * Submit at least one bacteriological sample of the pool water each week to a water testing lab for examination.
 +  * Collect a bacteriological sample in an approved bottle from below the water surface near an outlet, while the pool is in use.
 +  * When you submit pool tests to the lab, you receive test results back within a few days (usually sent to the Health Centre).
 +  * Make sure the coliform count in the pool water does not exceed two colonies for each 100 ml with the Standard Membrane Filter Technique.
 +  * Look at the test results to make sure the values are within the allowable ranges. If there is a problem, the Environmental Health Officer usually contacts you. But it is important to check them yourself.
  
 +//**Daily Testing**//
  
 +NWT Public Pool Regulations state:
 +  * Take tests each day that the pool operates, at least once every four hours
 +  * Check test results and make sure the values fall within the allowable range. See the following table.
  
 +|**TEST**|**ALLOWABLE RANGE**|**IDEAL RANGE**|
 +|Total alkalinity|80 to 200 mg/L|80 to 120 mg/L|
 +|Calcium hardness|100 to 200 mg/L|150 to 200 mg/L|
 +|pH (pool)|7.2 to 7.8|7.6|
 +|pH (hot tub)|7.2 to 7.6|7.4 to 7.6|
 +|Free available chlorine (pool)|1.0 to 1.5 mg/L|1.2 mg/L|
 +|Total residual chlorine (pool)|not greater than 2.5 mg/L|
 +|Free available chlorine (hot tub)|5 to 10 mg/L|
 +|Temperature (pool)|26°C - 30°C.|
 +|Temperature (hot tub)|No greater than 40°C|
water_testing.1351223420.txt.gz · Last modified: 2013/02/26 14:09 (external edit)