Water treatment dosing record
A record for continuous chemical dosing and secondary disinfection systems (such as chlorine dioxide or copper-silver ionisation), logging setpoints, measured residuals and chemical replenishment.
This PDF is not tagged for assistive technology. Use this structured HTML page or the CSV as the accessible alternative.
| Date | System / dosing unit | Chemical | Dose / setpoint | Residual measured | Within range? (Y/N) | Action taken | Initials |
|---|---|---|---|---|---|---|---|
| 2026-06-10 | HCW: chlorine dioxide | Chlorine dioxide | Per system setpoint | 0.3 mg/l at outlet | Y | None required | AB |
| 2026-06-10 | HWS, Cu/Ag ionisation | Copper/silver ions | Per system setpoint | Low at far outlet | N | Checked electrodes; rebalanced | CD |
Sample rows are illustrative. Download the PDF for a clean print-ready form, or the CSV to fill in digitally.
How to use it
- Record residual or ion levels at representative points for each continuous dosing or secondary disinfection system you operate.
- Log chemical replenishment, setpoint changes and equipment maintenance (e.g. electrode/cell cleaning or replacement).
- Compare measured residuals against your control limits and the supplier and HSG274 guidance, and act on any out-of-range result.
- Manage the treatment chemicals under COSHH and keep this record with your logbook as evidence the system is dosing effectively; the values shown are illustrative readings.
Background: Automated dosing systems for Legionella control
Cite this page
"Water treatment dosing record (free template)." Legionella.io. https://legionella.io/templates/water-treatment-dosing-record/
Free to reuse under CC BY 4.0: quote, adapt or republish with attribution and a link back to the original.
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