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Initial Distribution System Evaluation (IDSE) Reporting
How to Complete an IDSE Report in Region 7
An Initial Distribution System Evaluation (IDSE) is used to determine where the highest levels of total trihalomethanes (TTHM) and haloacetic acids (HAA5) can be found in a water system's distribution system. All water systems that have conducted standard monitoring or completed a system specific study must prepare and submit an IDSE Report under the Stage 2 Disinfectants and Disinfection Byproducts Rule (DBPR). The IDSE Report includes the TTHM and HAA5 monitoring results from samples collected during the evaluation period and identifies monitoring locations to be used for future compliance monitoring.
Systems conduct and report their IDSE according to their schedule:
| System that serves a population, or purchases from a system that serves a population: | Schedule 1 | > 100,000 population |
| Schedule 2 | 50,000 – 99,999 | |
| Schedule 3 | 10,000 – 49,999 | |
| Schedule 4 | < 10,000 |
Milestones for submitting IDSE Reports:
Schedule* | Submit report by: | Send your report to: |
1 | January 1, 2009 | EPA Region 7 |
2 | July 1, 2009 | EPA Region 7 |
3 | January 1, 2010 | State office |
4 | July 1, 2010 | State office |
| *If you are not sure whether your water system is Schedule 1, 2, 3 or 4, please contact Doug Brune (brune.doug@epa.gov) at 913-551-7178, or Monica Wurtz (wurtz.monica@epa.gov) at 913-551-7868. | ||
Select the type of report you plan to submit based on the type of IDSE you completed:
- Standard Monitoring IDSE Report:
- Your system serves a population of at least 10,000
- Your system serves a population less than 10,000
- System Specific Study IDSE Report:
- Existing Monitoring Results
- Hydraulic Model
Prepare a Standard Monitoring IDSE Report (if your system serves a population of at least 10,000):
- Instructions (PDF) (24 pp, 94K About PDF)
- Preparing your IDSE Report
We recommend using the first option: - Microsoft Excel template (110K) [the spreadsheet on Page 3 calculates the locational running annual averages (LRAAs) for each site where you sampled TTHM and HAA5]
- Microsoft Word (295K) (does not calculate LRAAs)
- Adobe Acrobat (PDF) (9 pp, 47K About PDF) (does not calculate LRAAs)
- IDSE Tool [requires an active EPA Central Data Exchange (CDX) account]
Note: Please include an attachment that describes locational running annual average calculation procedures and the IDSE Report can be used as your Stage 2 DBPR Compliance Monitoring Plan.
Submitting your IDSE Report: If your system is Schedule 1 or Schedule 2 and you use the IDSE Tool, please contact Doug Brune at (913) 551-7178 to let him know you have submitted your IDSE Report using the IDSE Tool. Otherwise, please send your completed IDSE Report form and schematic (if required) by e-mail to stage2mdbp@epa.gov or mail to:
-
Doug Brune
U.S. Environmental Protection Agency
901 N. 5th Street
Kansas City, KS 66101
If your system is Schedule 3 and you want to use the IDSE Tool to submit your IDSE Report, please contact your state office to find out if they will accept the IDSE Report using the IDSE Tool. Otherwise, please submit your completed IDSE Report directly to your state office.
- Examples of completed IDSE Reports:
- Report for a System Using Surface Water or Ground Water Under the Direct Influence of Surface Water (PDF) (11 pp, 54K About PDF)
- Report for a System Using Ground Water (PDF) (9 pp, 58K About PDF)
Prepare a Standard Monitoring IDSE Report (if your system serves a population less than 10,000):
- Instructions (PDF) (15 pp, 67K About PDF)
- Preparing your IDSE Report
We recommend using the first option: - Microsoft Excel template (110K) [the spreadsheet on Page 3 calculates the locational running annual averages (LRAAs) for each site where you sample TTHM and HAA5]
- Microsoft Word (295K) (does not calculate LRAAs)
- Adobe Acrobat (PDF) (6 pp, 41K About PDF) (does not calculate LRAAs)
- IDSE Tool [requires an active EPA Central Data Exchange (CDX) account]
Note: Please include an attachment that describes locational running annual average calculation procedures and the IDSE Report can be used as your Stage 2 DBPR Compliance Monitoring Plan.
Submitting your IDSE Report: If your system is Schedule 1 or Schedule 2 and you use the IDSE Tool, please contact Doug Brune at (913) 551-7178 to let him know you have submitted your IDSE Report using the IDSE Tool. Otherwise, please send your completed IDSE Report form and schematic (if required) by e-mail to stage2mdbp@epa.gov or mail to:
- Doug Brune
U.S. Environmental Protection Agency
901 N. 5th Street
Kansas City, KS 66101
If your system is Schedule 3 or Schedule 4 and you want to use the IDSE Tool to submit your IDSE Report, please contact your state office to find out if they will accept the IDSE Report using the IDSE Tool. Otherwise, please submit your completed IDSE report directly to your state office.
- Example of completed IDSE Report (PDF) (6 pp, 44K About PDF)
Prepare a System Specific Study IDSE Report Using Existing Monitoring Results
- Instructions (PDF) (25 pp, 122K About PDF)
- Preparing your IDSE Report
You may use one of the options below for filling out your report (we recommend using one of the first two options):- Microsoft Word (267K)
- Adobe Acrobat (PDF) (7 pp, 38K About PDF)
- IDSE Tool [requires an active EPA Central Data Exchange (CDX) account]
Note: Please include an attachment that describes locational running annual average calculation procedures and the IDSE Report can be used as your Stage 2 DBPR Compliance Monitoring Plan.
Submitting your IDSE Report: If you use the IDSE Tool, please contact Doug Brune at (913) 551-7178 to let him know you have submitted your IDSE Report using the IDSE Tool. Otherwise, please send your completed IDSE Report form and schematic (if required) by e-mail to stage2mdbp@epa.gov or mail to:
Doug Brune
U.S. Environmental Protection Agency
901 N. 5th Street
Kansas City, KS 66101
- Example of completed IDSE Report (PDF) (5 pp, 35K About PDF)
Prepare a System Specific Study IDSE Report Using a Hydraulic Model
- Instructions (PDF) (28 pp, 148K About PDF)
- Preparing your IDSE Report
You may use one of the options below for filling out your report (we recommend using one of the first two options): - Microsoft Word (370K)
- Adobe Acrobat (PDF) (11 pp, 50K About PDF)
- IDSE Tool [requires an active EPA Central Data Exchange (CDX) account)]
Note: Please include an attachment that describes locational running annual average calculation procedures and the IDSE Report can be used as your Stage 2 DBPR Compliance Monitoring Plan.
Submitting your IDSE Report: If you use the IDSE Tool, please contact Doug Brune at (913) 551-7178 to let him know you have submitted your IDSE Report using the IDSE Tool. Otherwise, please send your completed IDSE Report form and schematic (if required) by e-mail to stage2mdbp@epa.gov or mail to:
-
Doug Brune
U.S. Environmental Protection Agency
901 N. 5th Street
Kansas City, KS 66101
- Example of completed IDSE Report (PDF) (11 pp, 55K About PDF)