{ "schemaVersion": "1.0.0", "constitutionVersion": "1.0.0", "createdAt": "2026-08-12T00:00:00Z", "description": "Append-only Evidence Passport records. Old revisions are immutable; corrections create a new revision and preserve the previous permalink.", "entity": { "type": "project", "id": "mexico-city-water-monitoring", "title": "Mexico City Water Network Sectorisation and Telemetry", "canonicalUrl": "https://1001smartcities.org/projects/mexico-city-water-monitoring/" }, "currentRevisionId": "2026-08-20-source-dates", "revisions": [ { "id": "2026-08-20-source-dates", "createdAt": "2026-08-20T18:42:52Z", "effectiveAt": "2026-07-26", "changeType": "baseline", "summary": "Created the first structured Evidence Passport with 1 claim and 10 source dossiers.", "preparedBy": { "type": "automation", "label": "AI-assisted evidence preparation", "humanApproved": false }, "review": { "status": "unreviewed", "by": null, "date": null, "note": "Awaiting operator and domain-expert review; publication of this revision implies neither." }, "changes": [ { "operation": "add", "path": "/evidencePassport", "summary": "Added claim-level evidence mapping and source dossiers." }, { "operation": "add", "path": "/revisionHistory", "summary": "Established a permanent, hash-addressed baseline revision." } ], "snapshotHash": "sha256:863968b843fb7afe721dc303b3a676c492885943cbfee1545f140a18ba007875", "snapshot": { "asOf": "2026-07-26", "projectFingerprint": "sha256:4bcbfb2be15b06fafeafeaa99a1ed75e06f5b299ae460ef39392543bf6044fae", "assurance": { "status": "unreviewed", "scope": "evidence-passport-revision", "statement": "AI-assisted structural preparation. This revision has not been reviewed by a human or subject-matter expert.", "machineChecks": [ "schema", "publication-diff-contract", "material-project-fingerprint", "claim-text-drift", "source-reference-resolution", "complete-source-dossier", "snapshot-hash" ] }, "projectState": { "status": "live", "outcome": "ongoing", "evidenceGrade": "peer-reviewed", "timeline": { "started": 2019, "ended": null } }, "governance": { "operator": "Secretaría de Gestión Integral del Agua (Segiagua), formerly Sacmex", "actorTypes": [ "utility", "city-government" ], "fundingModel": "public", "fundingDescription": "Mexico City government budget", "cost": "≈955.5M MXN on sectorisation to Aug 2022; ≈19bn MXN city water and drainage budget for 2026", "ownership": null, "decisionRights": null, "exitConditions": null }, "claims": [ { "id": "clm-aa96f8a6a8cf7ac8", "field": "impact", "text": "A 2023 PLOS Water study surveying 2,595 residents found 73 percent of households in the five eastern boroughs receive water only intermittently, averaging 87 hours a week, and 61 percent had suffered an outage in the previous three years", "statementKind": "quantitative", "textMode": "verbatim-from-project-record", "mappingStatus": "mapped", "sourceRefs": [ "src-c91cdcc8f0181e59" ], "supportNote": null, "caveat": "The utility itself still puts network losses at around 40 percent of supply, and the promised public dashboard of network readings never appeared.", "interpretation": { "added": false, "interpolation": false, "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion." } } ], "sources": [ { "id": "src-bc2f84a67e939c1f", "title": "La Razón — sectorisation at 58 percent (30 Aug 2022)", "url": "https://www.razon.com.mx/ciudad/2022/08/30/avanza-58-sectorizacion-de-la-red-de-agua-potable-de-la-cdmx/", "publisher": { "name": null, "domain": "razon.com.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2022-08-30", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "'Se han concluido 484 de los 847 sectores' previstos para 2024, con una inversión de 955 millones de pesos ('484 of the 847 sectors planned for 2024 have been completed', 955 million pesos invested). Same piece: 'Para finales de ese año se preveía un portal de acceso público con mediciones principales de la ciudad' ('a public portal with the city's main measurements was expected by the end of that year') — that portal was not found in 2026. Most other sources give the plan total as 830, not 847.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-eede65a00950007f", "title": "Diario Basta — sectorisation programme launched (4 Apr 2019)", "url": "https://diariobasta.com/2019/04/04/arranca-la-sectorizacion-de-sacmex/", "publisher": { "name": null, "domain": "diariobasta.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2019-04-04", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Dates the start of the programme to 2019, beginning in Álvaro Obregón and Benito Juárez under that year's Sacmex works plan. Basis for yearStart.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-f0196077f3db909f", "title": "Excélsior — telemetry stations rehabilitated and added (30 Apr 2024)", "url": "https://www.excelsior.com.mx/comunidad/sacmex-recupera-9-mil-270-litros-de-agua-por-segundo-en-cdmx/1649410", "publisher": { "name": null, "domain": "excelsior.com.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2024-04-30", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "'Rehabilitación de 35 estaciones de medición y telemetría, así como la implementación de 30 nuevas estaciones' ('rehabilitation of 35 measurement and telemetry stations, plus 30 new stations'), a 30 million peso investment permitting real-time monitoring. The same article's figure of 9,270 litres per second recovered covers wells, springs and pumping plants generally and is deliberately not used here.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-524a22a68aa00094", "title": "El Universal — 2026 water budget funds metering, automation and telemetry (15 Dec 2025)", "url": "https://www.eluniversal.com.mx/metropoli/cdmx-invertira-19-mil-mdp-en-agua-y-drenaje-presupuesto-hidrico-crecera-267-en-2026/", "publisher": { "name": null, "domain": "eluniversal.com.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2025-12-15", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "19 billion pesos for water and drainage in 2026, an increase of 26.7 percent; the works contemplate 'medición, automatización y telemetría' to 'incrementar la eficiencia de la infraestructura hidráulica' ('metering, automation and telemetry' to 'increase the efficiency of the hydraulic infrastructure'). Evidence the programme is still live and funded.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-d0eb02f88a03520a", "title": "Almomento — 2026 Plan Hídrico, leak repair and buried-pipe survey (18 Feb 2026)", "url": "https://almomento.mx/cdmx-destina-siete-mil-millones-a-modernizar-infraestructura-hidrica-en-2026/", "publisher": { "name": null, "domain": "almomento.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2026-02-18", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "'Triplicar la reparación de fugas, lo que permitiría recuperar 300 litros por segundo' ('triple leak repairs, which would allow 300 litres per second to be recovered') and 'inteligencia satelital y georradar terrestre, capaces de supervisar 800 kilómetros de infraestructura subterránea' ('satellite intelligence and ground-penetrating radar, able to survey 800 kilometres of underground infrastructure'). Strongest recent source on current state.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-08385970aaf20ab7", "title": "Sacmex/Segiagua — 'Agua en tu colonia' supply-schedule portal (operator)", "url": "https://aguaentucolonia.sacmex.cdmx.gob.mx/", "publisher": { "name": null, "domain": "aguaentucolonia.sacmex.cdmx.gob.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "Public lookup returning a neighbourhood's water source and scheduled supply hours. The page is a JavaScript single-page app and served no readable content to an automated fetch; existence and function corroborated by press coverage below. It publishes schedules, not measurements, and offers no download or API.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-54501ed7544594a3", "title": "El Financiero — how residents check the tandeo schedule (30 Jan 2024)", "url": "https://www.elfinanciero.com.mx/cdmx/2024/01/30/agua-por-tandeo-en-cdmx-como-saber-a-que-hora-habra-suministro-de-liquido-en-tu-colonia/", "publisher": { "name": null, "domain": "elfinanciero.com.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2024-01-30", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Independent corroboration of what the portal does: select borough and neighbourhood to get the water source and the hours when supply is scheduled.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-3bf462f37ab09e44", "title": "Milenio — Sacmex puts network losses at 40 percent", "url": "https://www.milenio.com/politica/cdmx-pierde-40-ciento-agua-fugas-redes-revela-sacmex", "publisher": { "name": null, "domain": "milenio.com", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": null, "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "record-date-only" }, "locator": { "type": "descriptive-source-note", "value": "'CdMx pierde 40 por ciento de agua por fugas en redes, revela Sacmex' ('Mexico City loses 40 percent of its water to network leaks, Sacmex reveals'). The figure is the utility's own, reported consistently by El Universal, Crónica and Aristegui Noticias since 2015; it is attributed here rather than asserted. Note: the city's own indicator portal (indicadores.cdmx.gob.mx) is reported to record 52.19 percent unaccounted-for water for 2022, a materially higher figure, but that page returned HTTP 503 on every attempt during review and the number is therefore not used.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } }, { "id": "src-c91cdcc8f0181e59", "title": "Huberts et al., PLOS Water (2023) — household costs of intermittent supply", "url": "https://journals.plos.org/water/article?id=10.1371%2Fjournal.pwat.0000056", "publisher": { "name": null, "domain": "journals.plos.org", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "claim-evidence", "claimRefs": [ "clm-aa96f8a6a8cf7ac8" ], "temporal": { "publishedAt": "2023-03-08", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "Peer-reviewed. '73% of surveyed households in those five boroughs reported receiving water intermittently', 'with an average of 87 hours a week, or roughly 12 hours a day'; '61% of surveyed households reported having experienced an outage of their water supply in the last three years'. Survey of 2,595 individuals in Gustavo A. Madero, Venustiano Carranza, Iztacalco, Iztapalapa and Tláhuac.", "exact": false }, "preservation": { "archiveUrl": "https://web.archive.org/web/20260413050047/https://journals.plos.org/water/article?id=10.1371/journal.pwat.0000056", "archivedAt": "2026-04-13", "contentHash": null, "status": "archive-linked" } }, { "id": "src-b02c2cfc68dbfd13", "title": "El Universal — Congress approves replacing Sacmex with Segiagua", "url": "https://www.eluniversal.com.mx/metropoli/aprueba-congreso-de-cdmx-extincion-del-sacmex-sera-la-secretaria-de-gestion-integral-del-agua/", "publisher": { "name": null, "domain": "eluniversal.com.mx", "classification": "not-classified" }, "sourceType": "web-page", "language": "und", "role": "background", "claimRefs": [], "temporal": { "publishedAt": "2024-10-02", "updatedAt": null, "sourceCheckedAt": null, "recordLastVerifiedAt": "2026-07-26", "dossierCreatedAt": "2026-08-20", "retrievedAt": null, "status": "publication-and-record-dates-recorded" }, "locator": { "type": "descriptive-source-note", "value": "'Con 65 votos a favor se avalaron cambios al Artículo 16 de la Constitución capitalina' so that 'el Sistema de Aguas de la Ciudad de México (Sacmex) pasará a ser la Secretaría de Gestión Integral del Agua' ('with 65 votes in favour, changes to Article 16 of the city constitution were approved' so that Sacmex 'will become the Secretariat for Integrated Water Management'). The change was completed in December 2025; Segiagua is the operator today, Sacmex the name under which most of this work was done.", "exact": false }, "preservation": { "archiveUrl": null, "archivedAt": null, "contentHash": null, "status": "not-captured" } } ], "coverage": { "claimsTotal": 1, "claimsMapped": 1, "sourcesTotal": 10, "sourcesUsedByClaims": 1, "sourcesWithPublicationDate": 8, "sourcesWithArchive": 1, "sourcesWithExactLocator": 0, "sourcesWithContentHash": 0 }, "limits": [ "Publisher names and source languages have not yet been classified; domains are recorded without guessing.", "Existing source notes are descriptive locators, not page- or paragraph-exact citations.", "A missing archive, publication date or content hash is shown as null rather than inferred.", "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim." ] } } ] }