DISINFECTANT MONITORING PLAN FOR

_____________________

_________________________________________

_____________, ________, ____________

PWSID #: ______________

Counties Served: ______________

Contact Person: __________________________

Telephone #: _________________________________

System Type: Purchase water from _________________

Population Served: ___________

Source Water Type: Purchase water from ___________ that comes from ____________

Disinfectant: No disinfectant added

Distribution System Description: ________________________________________________________________________________________________________________________________________________

MONITORING PLAN FOR DISINFECTANTS, DISINFECTION BY-PRODUCTS AND DISINFECTION BY-PRODUCT PRECURSORS

To meet the Maximum Residual Disinfectant Level (MRDL) for Chlorine, the system:

Measures chlorine once daily with a _________________________ to monitor the finished water. The free chlorine reading is recorded each day on the MOR.

Measures free chlorine in the distribution system each month at the same time as total coliforms are sampled and the results are recorded.

Locations of sampling sites can be found in our Bacteriological Sampling Plan, with monthly distribution samples recorded on the MOR.

The system will calculate compliance with the MCL, MRDL’s and treatment techniques by:

The monitoring for the MRDL requirements will be performed by the _______________ therefore the _____________________ will not be doing the calculations.

To meet compliance for disinfection byproducts (DBP), the following locations have been identified as collection sites for TTHMs and HAA5s:

______________________________________ Maximum Residence

This sample represents the makeup of the ______________________ being identified as having the maximum residence time. The maximum residence time site was selected by evaluation of historical data for free chlorine residual and by estimating the time of travel in the distribution main and tanks.

Other locations are not required, but the following average residence sites may be used if needed:

____________________________________

____________________________________

____________________________________

The system will calculate compliance for TTHMs and HAA5s by:

For TTHMs and HAA5s, the system is required to, and will monitor, once per year. The samples will be collected beginning August 2004.

We will take the sum of the total values of the annual TTHM compliance samples and divide by the number of compliance samples to determine the average results for the year.

For annual compliance calculation, add the quarterly results and divide by the number of quarterly TTHM samples.

The same procedure will be used for calculating HAA5 compliance.

If the annual arithmetic TTHM average is 0.080 mg/l or less, and the HAA5 average is 0.060 mg/l or less, the system is in compliance.

TOC monitoring is not required for ______________________

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THM Monitoring Plan template

TAUD

2004-01-29

Tony Wyatt

TAUD