Water — District
Disclosure control & data provenance
Grouping the dataset into 6 quarter groups, 0 were safe to publish and 6 were withheld under the rules below. Across 2250 meter reads, 0.0% of records and 0.0% of total total consumption remain in the published output, with worst-case re-identification risk of 0% (None).
Anomalies are flagged, not dropped; rows failing validation are quarantined as rejected. 9 reads (0.4%) lack coordinates and are excluded from spatial views.
-
(n,k)-dominance — 6 groups withheld
(triggered by your top-1 dominance limit p = 15%).
ESSnet/Eurostat SDC Handbook §4.2 (Hundepool et al.) — sensitive cells in magnitude tables
-
PII handling — identifiers are excluded from the analytic
path; only disclosure-controlled aggregates are reported.
NIST SP 800-122; NISTIR 8053
| Quarter | Total consumption (CCF) | Contributors | Status |
|---|---|---|---|
| 2024-Q1 | * | — | Withheld |
| 2023-Q2 | * | — | Withheld |
| 2024-Q2 | * | — | Withheld |
| 2023-Q4 | * | — | Withheld |
| 2023-Q3 | * | — | Withheld |
| 2023-Q1 | * | — | Withheld |
Consumption profile
| 10th | 155 |
| 25th | 226 |
| Median | 338 |
| 75th | 623 |
| 90th | 2195 |
Weather & seasonality
E = 1769 + 0.9966·HDD · base 65°F · 9 months
Differential privacy — an alternative release
An alternative to suppression: instead of hiding small groups, calibrated Laplace noise is added to each count (ε = 1.0, scale b = 1.0) so no individual's presence can be inferred while totals stay useful. Mean absolute error ±0.7 across 3 groups.
Appendix — policy & citations
| Governing standard | 15/15 rule |
| Minimum group size (k) | 15 |
| Dominance (top-n ≤ p) | 1 ≤ 0.15 |
| Min accounts for models | 15 |
| Grouping | Quarter |
- k-anonymity — Sweeney (2002); ESSnet/Eurostat SDC Handbook
- (n,k)-dominance — ESSnet SDC Handbook §4.2; CPUC 15/15
- Inequality — Gini (1912); Lorenz (1905)
- Spatial — Moran (1950); Cliff & Ord (1973)
- Weather / M&V — ASHRAE Guideline 14; IPMVP Option C; PRISM
- Benchmarking — EPA ENERGY STAR; DOE/EIA CBECS/RECS
- Load — NREL UMP; BPA M&V Peak Demand
- Burden — ACEEE; US Census ACS
- Differential privacy — Dwork et al. (2006); US Census 2020 DAS
- PII — NIST SP 800-122; NISTIR 8053; NIST SP 800-188
- Methods & Formulas — every rule & analysis with its formula-as-implemented and primary citation
Synthetic sample data — for demonstration, not distribution. Generated by UnitTrack, a Polish Clover Solutions product · 2026-07-27 20:32.