Tools |
| Disinfection Profiling As
Required by the Long Term 1 Enhanced Surface Water Treatment
Rule |
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Available on the eLibrary,
(3800-FM-WSM0097 6/2003)
This file provides a simplified 11-step outline of the process
required to calculate log inactivations, also known as "CT calculations",
for surface water treatment plants disinfecting with chlorine.
These instructions are geared towards operators. The
instructions also explain the steps for creating a
disinfection profile and a disinfection benchmark.
Disinfection profiling and benchmarking is critical for
optimized operation of surface water treatment plants as well
as determining compliance with Pennsylvania Safe Drinking
Water Regulations. "Log Inactivation" calculations
are the key component of this type of profiling.
For water plants that prefer to use an electronic
calculator to calculate inactivation of Giardia, EPA has developed a
Disinfection Profiler Spreadsheet. Click here for more
information.
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| Filter Self-Assessment
Example Report |
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Available on the eLibrary,
(3800-BK-DEP2750 6/2004)
The purpose of this document is to serve as a supplement to
Chapter 5 of EPA's Guidance Manual for Compliance with the
Interim Enhanced Surface Water Treatment Rule: Turbidity
Provisions. This document includes an example of an
acceptable filter self-assessment report. |
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| Enhanced Coagulation
Calculator, version 1.1, Microsoft Excel file (revised
July 2003) |
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Available on the eLibrary,
(383-2129-001)
This spreadsheet assists water system operators in
understanding and implementing the "Enhanced
Coagulation" requirements under the Disinfectants/Disinfection
Byproducts Rule. It calculates removal of total organic
carbon (TOC) and tracks the alternative compliance criteria
for each month and for the year based on a running annual
average calculated quarterly. The TOC treatment technique
applies to plants using surface water or groundwater under
the direct influence of surface water that practice
conventional filtration treatment or softening. Large
surface water systems serving at least 10,000 people must
start monitoring in January 2002 and all other affected
water systems must start in January 2004. Please note that
this spreadsheet is not a substitute for the reporting forms
that are required for TOC nor is it a substitute for the
Department's automated compliance program. Prior to using
the program it is recommended that you download and save the
program to your computer and read the instructions
completely. |
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Disclaimer: The Disinfection Profile
Spreadsheet and Formula/Calculator Program described below
are not DEP products. Please read the following disclaimer before
downloading and installing onto your PC.
"The Commonwealth of Pennsylvania, Department of
Environmental Protection ("Department") makes no warranties,
either express or implied, with regard to software or any other
information obtained from this Website, and disclaims all warranties
including any and all warranties of merchantability and fitness for a
particular purpose. The Department shall not be liable for any damages,
including incidental, consequential, special or indirect damages,
arising out of or in connection with the installation or use of the
software obtained from this Website, or any other information contained
therein.
"Installation and/or use of the software and/or
other information obtained from this Website constitutes agreements with
these terms, and any terms and conditions set forth herein."
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| Disinfection
Profile Spreadsheet |
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EPA has developed an Excel program called, "Disinfection
Profile Spreadsheet" and instructions. This downloadable spreadsheet
enables water suppliers and department staff to develop a disinfection profile
and benchmark as required by the Long Term 1 Enhanced Surface Water Treatment
Rule. This spreadsheet will automatically calculate the weekly log
inactivation, average monthly log inactivation, and disinfection benchmark for
both Giardia lamblia and viruses. Pennsylvania regulations require at
least a 1-log inactivation of Giardia and a 3-log inactivation of
viruses at all times at surface water treatment plants.
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| Formula/Calculator
Program |
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Download
this executable program that converts metric to English units
(and vice-versa) for distance, temperature, volume, time, speed, mass,
power, density, pressure, energy and many others, including the
ability to create custom conversions. A valuable tool for department
staff and water system operators. |
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