Galena city results
We ran Galena's lead service line model on public city data, with the code the Galena app runs. Each report names the exact code commit. Each city has its result, a map file of areas, and the data card: where the data came from, its licence, the date we downloaded it and checksums. You can download the city's file from its publisher and check its checksum. The code that ran these checks is not public yet.
No line, address or line-level prediction is published. Areas are H3 cells at resolution 8 (about 0.7 square kilometres). A cell with fewer than 10 lines is left out.
Machine-readable list: index.json. Checksums of every file: SHA256SUMS.
Results
| City | Result | Lines | What it means | Files | Source and licence |
|---|---|---|---|---|---|
| Calgary, Alberta | FAIL | 384,888 | Check failed. The city's records show 0.03% of the model's not-lead calls as lead or galvanized pipe needing replacement, at most 0.05% with 98.33% confidence. Lines built in the 1920s and the 1940s fail on their own. The limits are 1% for that share and 2% for the "at most" figure. A simple rule by year built clears 100.0% of the test lines and the model clears 94.7%, so the model adds nothing over the rule. For lines built in the 1940s, the lines the model called not lead were lead 2.0% of the time, against 0.03% overall. No group may be more than 1 percentage point above the overall rate. | report.json hexes.geojson SHA256SUMS | City of Calgary Open Government Licence - City of Calgary, version 2.1 Retrieved 2026-10-24 |
| Norfolk, Virginia | FAIL | 71,275 | Check failed. Of the model's not-lead calls on lines the city checked in the field, 10.4% turned out to be lead or galvanized pipe needing replacement, at most 12.7% with 98.33% confidence. Lines built in the 1950s, the 1960s, the 1980s, the 1990s and the 2010s fail on their own. The limits are 1% for that share and 2% for the "at most" figure. | report.json hexes.geojson SHA256SUMS | City of Norfolk Department of Utilities City of Norfolk Open Data Policy: portal data is dedicated to the public domain, with no use restrictions. Retrieved 2026-10-24 |
| Kitchener, Ontario | INSUFFICIENT | 66,701 | Not enough data to judge the model. The city has 4 lead lines in its records, too few: a check needs at least 100. Those lead lines lie in 4 areas of the map (hexagons with an edge of about 1.4 km), too few: a check needs lead lines in at least 5 areas. | report.json hexes.geojson SHA256SUMS | City of Kitchener (Kitchener Utilities) Open Government Licence - The Corporation of the City of Kitchener, version 1.0 Retrieved 2026-10-24 |
| Waterloo, Ontario | INSUFFICIENT | 30,972 | Not enough data to judge the model. The city has 12 lead lines in its records, too few: a check needs at least 100. Those lead lines lie in 3 areas of the map (hexagons with an edge of about 1.4 km), too few: a check needs lead lines in at least 5 areas. | report.json hexes.geojson SHA256SUMS | City of Waterloo Open Government Licence - City of Waterloo, as the City's open data portal states it. The layer's own licence field is blank. Retrieved 2026-10-24 |
Each city's data is used under its licence, named in its row. No city has a role in this work or endorses it.
PASS: the model's check passed, judged on the lines the city checked in the field where it marks them, else on its records. FAIL: it did not. INSUFFICIENT: too few known lead lines, or too few checked lines in every decade, to check a model, so no model result is given. The rules are those approved on November 3, 2026 (ADR 0019); each report says them.
Cities not published
Galena also holds files from other places. It does not publish results from them.
Generated 2026-11-10T18:13:54Z.