UV intensity, UVT, dose and microbial-result anomalies
Use this when uv intensity, uvt, dose and microbial-result anomalies is observed but the cause remains unclear. The diagnostic checks measurement and sampling, operating changes, issue location, and key evidence before suggesting likely causes and the next useful check.
First time here? Start with this
You do not need every data point before you begin
The system asks one discriminating question at a time and updates the candidate causes on the right. Answer from current facts; choose unknown or defer a question when the evidence is not available.
- 1
Confirm the issue
Check whether the symptom is reproducible and whether the measurement or observation is reliable.
- 2
Narrow the causes
Continue through operating changes, issue location, and available inspection results.
- 3
Read the live result
Candidate causes, support, counter-evidence, conflicts, and next actions update as you answer.
This tool analyzes information you already have. It does not insert a safety screen or use safety status to stop the diagnosis. If an alarm, leak, or injury is happening now, follow the site emergency procedure directly.
Automatic troubleshooting · Selections are not uploaded
Only one question is shown at a time. Answer from current facts or defer an unknown item. Possible causes and next checks update on the right as you answer.
- 1Data validity
- 2Operating changes
- 3Issue location
- 4Further confirmation
Question progress
0/33
- Answered
- 0
- To confirm
- 33
- Clues found
- 0
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Next question
Phase 1 · Data validity
What is the application (drinking water/wastewater/reuse), target pathogen, log credit, and result definition?
The system asks the question most useful for separating possible causes. Unknown or deferred items are not treated as the opposite conclusion.
I have more test or inspection resultsOptionalAdd laboratory analysis, normalized calculations, or checks completed by trained personnel when available. These fields are optional.
View rule sources (15)Standards, regulations, OEM material, and peer-reviewed literature used to audit the diagnostic logic. You do not need to read them before starting.
Each rule cites material directly relevant to its judgment. Current OEM and site procedures remain controlling.
- A-government-guidance · US EPA · 2006Ultraviolet Disinfection Guidance Manual for the Final LT2ESWTR
- A-government-toolkit · US EPA · 2022Ultraviolet Treatment Toolkit
- A-government-regulation · US EPA · 2006Long Term 2 Enhanced Surface Water Treatment Rule Final Rule
- A-government-fact-sheet · US EPA · 1999Wastewater Technology Fact Sheet: Ultraviolet Disinfection
- A-government-fact-sheet · US EPA · 2003Wastewater Technology Fact Sheet: Disinfection for Small Systems
- A-government-verification-protocol · US EPA · 2007ETV Protocol for UV Disinfection Systems for Secondary Wastewater Effluent and Water Reuse
- A-government-design-guideline · Government of Ontario · 2024Design Guidelines for Drinking-Water Systems: UV Disinfection
- A-government-guidance · UK Drinking Water Inspectorate · 2026Guidance on the Use of UV Irradiation for Public Water Supplies
- A-government-operational-guidance · UK Drinking Water Inspectorate · 2026UV Disinfection for Private Water Supplies
- A-government-guideline · Health Canada · 2019Guidelines for Canadian Drinking Water Quality: Enteric Viruses
- A-government-guideline · Health Canada · 2020Guidelines for Canadian Drinking Water Quality: Escherichia coli
- A-intergovernmental-technical · World Health Organization · 2002Managing Water in the Home: Accelerated Health Gains from Improved Water Supply
- A-intergovernmental-guideline · World Health Organization · 2011Guidelines for Drinking-water Quality, 4th Edition
- A-government-safety · US CDC · 2024Facts About Ultraviolet Radiation
- A-government-safety-guidance · US NIOSH · 2009Environmental Control for Tuberculosis: Basic Upper-Room UVGI Guidelines