{"id":"watermain-ductile-iron","version":"0.5.0","classification":{"uniformat":"G3010"},"names":["Watermain, ductile iron"],"aliases":["DI watermain","ductile iron pipe"],"service_life":{"median_years":80,"range_years":[50,160],"range_basis":"source_spread"},"pm_tasks":[{"task":"Flush distribution mains to remove deposits","frequency":"P1Y","reference":"UFM 3-230-02 Operation and Maintenance (O&M): Water Supply Systems","url":"https://www.wbdg.org/FFC/DOD/UFC/ufm_3_230_02_2026.pdf","page":117,"checklist":"6-3.3 Flushing (text)"},{"task":"Flow test all parts of the distribution system","frequency":"P5Y","reference":"UFM 3-230-02 Operation and Maintenance (O&M): Water Supply Systems","url":"https://www.wbdg.org/FFC/DOD/UFC/ufm_3_230_02_2026.pdf","page":132,"checklist":"7-2.1.2 Hydrant-Flow Tests (text)"}],"basis":[{"type":"public_document","life_type":"planning","title":"Barrie: City of Barrie Corporate Asset Management Plan: Proposed Levels of Service","url":"https://www.barrie.ca/Corporate-Asset-Management-Plan.pdf","page":148,"label":"Watermain - Ductile Iron","years":60,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Barrie: City of Barrie Corporate Asset Management Plan: Proposed Levels of Service","url":"https://www.barrie.ca/Corporate-Asset-Management-Plan.pdf","page":148,"label":"Watermain - Ductile Iron with Cathodic Protection","years":75,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026)","url":"https://listview.kenora.ca/Files/City%20Policy%20Manual/Administration%20and%20Finance/AF-6-1%20Tangible%20Capital%20Asset.pdf","page":17,"label":"Water Mains - Ductile Iron","years":60,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"accounting","title":"Kingston: Tangible Capital Assets Policy","url":"https://cityofkingston.ca/media/pljd1bhs/finance_policy_tangible-capital-asset-policy.pdf","page":15,"label":"Water Utility - Water Pipes: DI","years":50,"note":"Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Belleville: Asset Management Plan - Comprehensive Citywide AMP - City of Belleville","url":"https://opencouncil.ca/wp-content/uploads/2024/08/Belleville_AMP_Final.pdf","page":118,"label":"Table B 4 Water Pipework - DI <= 250mm","years":80,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Belleville: Asset Management Plan - Comprehensive Citywide AMP - City of Belleville","url":"https://opencouncil.ca/wp-content/uploads/2024/08/Belleville_AMP_Final.pdf","page":118,"label":"Table B 4 Water Pipework - DI 251- 400mm","years":100,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Belleville: Asset Management Plan - Comprehensive Citywide AMP - City of Belleville","url":"https://opencouncil.ca/wp-content/uploads/2024/08/Belleville_AMP_Final.pdf","page":118,"label":"Table B 4 Water Pipework - DI > 400mm","years":160,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"The Blue Mountains: Town of The Blue Mountains Asset Management Plan 2025","url":"https://www.thebluemountains.ca/sites/default/files/2026-03/2025%20Asset%20Management%20Plan.pdf","page":26,"label":"Ductile Iron","years":90,"note":"Asset management plan (planning life). Approved on text check: the label and value were found on the cited page."},{"type":"public_document","life_type":"planning","title":"Cornwall: 2025 Asset Management Plan City of Cornwall","url":"https://media-003-ca.cdn.govstack.com/cornwall-ca/media/zf1flyyr/2025-asset-management-plan.pdf","page":354,"label":"Watermain - Ductile Iron","years":90,"note":"Asset management plan (planning life). Compared with an image of the cited page."}],"confidence":{"grade":"C","sample_size":null},"open_questions":["These are Ontario accounting lives from municipal capital asset policies, not planning or observed replacement data."],"contributors":["unfinished.one editors"],"last_reviewed":"2026-10-22","canonical_url":"https://unfinished.one/c/watermain-ductile-iron","versioned_url":"https://unfinished.one/c/watermain-ductile-iron/v/0.5.0","licence":"CC-BY-4.0","citation":"unfinished.one (2026). Watermain, ductile iron, v0.5.0. https://unfinished.one/c/watermain-ductile-iron/v/0.5.0"}