A camp can meet every water-litre and latrine-ratio target in the Sphere Handbook and still see diarrheal disease climb, because clean water and functioning latrines only reduce disease if people actually use them correctly. That gap between infrastructure and behavior is why hygiene promotion carries its own staffing standard, distinct from the hardware standards that dominate most WASH planning. The number is simple to state and easy to under-budget: two hygiene promoters or community mobilizers per 1,000 members of the target population.
The Ratio Sphere and UNHCR Actually Specify
The Sphere Handbook’s hygiene promotion standards, developed alongside UNHCR’s own WASH guidance for camp settings, treat promotion as a distinct programmatic line item rather than a communications add-on to water and sanitation construction. Alongside quantity standards for hygiene items — commonly cited around 250g of soap per person per month, with some UNHCR-referenced guidance splitting a larger allocation between bathing and laundry use, plus household water containers in the 10–20 litre range — the handbook sets a staffing benchmark for the people responsible for making sure those items get used correctly: roughly two promoters or mobilizers per 1,000 people in the target population.
That ratio is easy to miss in a procurement-driven planning process, because it doesn’t show up on a supply manifest. A distribution plan for soap, containers, and menstrual hygiene materials can be fully costed and shipped without a single line for the staff who explain, demonstrate, and follow up on how those items are supposed to be used. The ratio exists precisely because item distribution and behavior change are not the same intervention.
Why Promotion Needs Headcount, Not Just Hardware
Handwashing at critical times, safe water storage, correct latrine use, and safe disposal of children’s stool are behaviors, not properties of the objects involved. A household can own soap and still not use it before eating if no one has worked through, in a culturally relevant way, why that specific moment matters. Sphere’s framing is explicit on this point: hygiene promotion strategies are expected to use participatory materials and culturally appropriate methods that let user groups plan and monitor their own hygiene improvements, rather than one-way messaging pushed out from a central office.
That participatory model is labor-intensive by design. It requires promoters who can hold repeated, small-group and household-level conversations, adapt messaging to different user groups within the same population, and identify local misconceptions that a generic poster campaign would never surface. A ratio of two per 1,000 is essentially an estimate of how much face-to-face contact that kind of work requires to reach an entire camp population within a reasonable planning cycle — not a communications-department minimum, but a direct-contact minimum.
What the Ratio Is Actually Buying
In practice, hygiene promoters and mobilizers working at this staffing density are expected to cover several linked functions rather than a single messaging task:
- Household and community-level engagement — repeated contact rather than a one-time briefing at distribution.
- Representation of all population subgroups — ensuring women, children, older residents, and people with disabilities are consulted on what hygiene practices are realistic given their access to water, space, and time.
- Feedback into item and infrastructure design — flagging when a distributed item, a latrine location, or a water point’s opening hours doesn’t match how people actually live.
- Monitoring of practice, not just receipt — checking whether a household is using a water container safely, not simply confirming it was handed one.
None of that scales through signage or a single camp-wide announcement. It scales through people, and the two-per-1,000 figure is Sphere’s attempt to put a number on how many people that actually takes.
Output Indicators vs. Outcome Indicators
One reason the staffing ratio gets under-prioritized is that it’s easier to report against output indicators than outcome indicators, and only one of those actually tells a program whether hygiene promotion is working.
| Indicator type | What it measures | What it misses |
|---|---|---|
| Output | Number of hygiene kits distributed; number of promotion sessions held | Whether anyone changed a hygiene practice as a result |
| Outcome | Percentage of the population using safe water for drinking; visible fecal contamination in the living environment | Requires observation and repeated contact, not just a distribution log |
Sphere’s hygiene promotion standards are structured around both an access standard — identification, access to, and use of hygiene items — and a promotion standard covering strategy and community participation. A program can satisfy the access standard on paper (items delivered, quantities matched to household size) while still failing the promotion standard, because use was never verified. The staffing ratio is the resourcing mechanism that makes verification possible at all.
Sizing a Team: The Practical Math
The ratio translates directly into planning arithmetic that camp coordination teams can apply before a hygiene promotion budget line is finalized. A settlement of 10,000 people implies roughly 20 promoters or mobilizers; a larger camp of 50,000 implies roughly 100. Those figures are a floor for direct population contact, not an all-inclusive program budget — they don’t cover supervisory staff, training, transport, or the hygiene items themselves, all of which sit on top of the promoter headcount.
What the math is useful for is catching the most common planning failure: treating hygiene promotion as a fraction of one WASH officer’s time rather than a staffed function with its own ratio-based target. When a camp’s actual promoter count falls well short of the two-per-1,000 benchmark, that gap is a legitimate diagnostic for why item distribution isn’t translating into the practice changes disease-prevention outcomes actually depend on — and it’s a more actionable number to bring into a coordination meeting than a general complaint that “uptake is low.”
Hygiene items and hygiene promotion staffing are two halves of the same standard, not substitutes for each other. A camp that fully meets its soap and water-container targets while leaving its hygiene promotion ratio unfilled has funded half the intervention Sphere actually describes.