How to use the source library
Use a source according to the question it can answer. A WASH service definition is not a radio specification; a cellular deployment guide is not a groundwater interpretation standard; a field study is not a guarantee of future performance. The notes below link to authoritative or primary sources that support the technical pages on this site. Check the source date and the exact local standard or regulation before making a safety-critical or compliance decision.
Core references
| Reference | Use it for | Direct source |
|---|---|---|
| WHO drinking-water quality | Risk-based drinking-water quality, surveillance and small-supply guidance. | Open source |
| WHO/UNICEF WASH systems monitoring | Core-system monitoring and review framing published in 2026. | Open source |
| JMP service definitions | Definitions for safely managed/basic/limited drinking water and sanitation. | Open source |
| USGS groundwater frequency | Why measurement cadence must match the monitoring objective. | Open source |
| GSMA Mobile IoT | Current NB-IoT/LTE-M deployment and interoperability guidance. | Open source |
| NIST IoT baseline | Core device identity, configuration, protection, interface and update capabilities. | Open source |
| FAO solar pumping | Design, operation, troubleshooting and maintenance for solar irrigation pumps. | Open source |
| Oxford rural water monitoring review | Published review of remote rural water system monitoring and operational outcomes. | Open source |
Evidence checklist
- Prefer the latest authoritative edition when definitions or standards change.
- Keep published field results tied to their geography, service model and study design.
- Record the exact source/version behind thresholds or procurement requirements.
- Do not use a dashboard signal as a substitute for a measurement the source says must be independently tested or surveyed.