This is the share of a council's homes covered by an up-to-date water safety (legionella) risk assessment. Legionella bacteria in water systems can cause a serious form of pneumonia, so landlords must assess and manage the risk. A figure at or near 100% means the checks are being done; a lower figure means some tenants' water systems haven't had their safety confirmed.
| name | tsm_legionella_safety |
|---|---|
| dataset | 10-tenant-satisfaction-measures |
| kind | extracted |
| type | numeric (percentage) |
| unit | % |
| grain | landlord-year |
| role | outcome |
| source | `data/TSM_2025_Full_Data/TSM_2025_Full_Data - File 04 - Management_info.csv`, column `BS04_Calculated_Value` |
| period | 2024/25 (year to 31 March 2025) |
| missingness | Stock-transfer (LSVT) councils are absent — they own no stock, so absence is structural, not missing data. Only large landlords (1,000+ social homes) report; Files 05/06 list excluded landlords. CH01/CH02 also have `_LCHO`/`_COMB` variants in File 04 — landlords reporting combined tenures carry values in the `_COMB` columns, so check variants before treating a value as missing. |
| score_note | Legionella assessment compliance; adds little beyond the BS family pattern. |
| peer_group | registered landlords (RSH-regulated, 1,000+ homes) — not yet scored on the leaderboard |
Percentage of homes for which all required legionella risk assessments have been carried out (BS04, File 04). Compliance measure; expected near 100%. Numerator and denominator columns are present in File 04, so the rate can be recomputed or re-based.