Free Tool·No login required

💧 Water Temperature Logger

Log hot & cold outlet readings with instant L8 ACOP pass/fail assessment. Export a vintage compliance certificate PDF or raw JSON file. Records stay in your browser only — nothing is sent to our servers.

📂 Stored locally & auto-cleared in 90 days
🖨️ PDF & JSON export — free forever
Cold ≤ 20°CPASSCold 21–25°CADVISORYCold > 25°CFAILHot ≥ 55°CPASSHot 50–54°CADVISORYHot < 50°CFAIL
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No readings yet. Click "+ Log reading" above to start.

Why use this tool

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L8 ACOP limits built in

Cold ≤20°C / Hot ≥50°C thresholds from HSG274 Part 2. Pass/fail calculated instantly as you type.

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Vintage compliance certificate

PDF styled as an official inspection log — parchment texture, certificate number, signature block and compliance statement.

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Zero data collection

Records live in your browser localStorage only. No account, no server, no tracking. Cleared automatically after 90 days.

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JSON export

Download structured JSON with schema version, thresholds, and full record set — ready for your own systems or archive.

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Full edit & delete

Every record can be updated or removed at any time. Filter by type or result to find what you need fast.

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Need the full app?

The Arnold Compliance app suite offers offline sync, client management and signed PDF certificates for professional use.