Guidance

H1 annex J5: infiltration worksheet

Tool to assist groundwater risk assessment for treated effluent discharges to infiltration systems.

From:
Environment Agency
Published
1 December 2014
Last updated
15 April 2026 — See all updates

Documents

Annex J5: infiltration worksheet

403 KB

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Annex J5: infiltration worksheet user manual

PDF, 1.09 MB, 50 pages

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Details

Use this worksheet to assist groundwater risk assessment for treated effluent discharges to infiltration systems.

It should be used in conjunction with the user manual.

This tool is designed to assess concentrations at the compliance point. To understand pollutant fate and transport within the plume, an alternative, more detailed model should be used (for example, ConSim).

Updates to this page

Published 1 December 2014
Last updated 15 April 2026 + show all updates

  1. Added text to clarify that this tool is designed to assess concentrations at the compliance point. To understand pollutant fate and transport within the plume, an alternative, more detailed model should be used (for example, ConSim).

  2. Published version 3.0 of the worksheet. The previous version had mathematical errors. These are now corrected.

  3. First published.

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