Sewage and water treatment plant and sewer-system construction delivery · Data Quality Requirements
- Lifecycle status
- Candidate
- Content maturity
- Authored methodology
- Current version
- 0.1.0Last updated
- Readiness
- Review required
Methodology and translation states come from the source record; publishing this website does not change their review status.
Content languages
en-US · canonicalzh-CN · Aligned
Status, classification and source details
Readiness
- Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.
Classification mapping
CPC 3.0:53253 · exact
Source
Data Quality Requirements
| requirement_id | Applies to | Requirement | Evidence |
|---|---|---|---|
complete_delivery | reference product | Match actual boundary, function, as-built geometry and acceptance. Partial civil shells, equipment lots or commissioning-only services are not a whole accepted plant. Report complete independently delivered expansion scope explicitly. | cp_acceptance; as-built drawings; actual test/acceptance |
inventory_coverage | all processes | Reconcile all work packages, route-selected units and actual exchanges; absent, unmeasured and omitted are different states. Identify each actual foreground constituent, asset interface and provider link; no process is removed merely because UUID is unresolved. | scope register; BOM; meter and waste balances |
route_state_identity | UUID-bearing rows | Match original name, chemical/physical state, grade, geography, supply gate, route, reference property and unit. The Chinese selected name equals the public Chinese baseName. Do not adopt broad labels through inconsistent taxonomy or misleading synonyms. | direct identity records and supplier/site specification |
source_limits | method and data | Use Hong Kong case sources only for documented configuration and interface support. Historical 1994/2003/2007/2012/2017/2018 material provides historical qualitative facts, not current legal approval or default construction quantities, lifetimes or emissions. PCR itself requires actual project evidence. | source locators and actual project records |
coverage_uncertainty | dataset | Retain meter calibration, sampling representativeness, conversion/asset denominator evidence, residual balances, missing flows, capital assumptions and unlinked upstream datasets. The technical construction result may be incomplete for an impact assessment. | calibration; quality/coverage register; uncertainty |
9. Validation Rules
| rule_id | applies_to | rule | source_ids |
|---|---|---|---|
v_reference | reference product | Require exactly one accepted_entity output with 1 item and the identical declared reference-product name; all rows/protocols use per declared reference flow. Require actual site, accepted stage and applicable measured geometry and treatment/conveyance/disposal functional tests. Check evidence-backed not_applicable for absent configuration fields; applicable unmeasured fields fail completeness. Do not invent a lifetime or kg-based plant. | |
v_route | all processes | Reject a whole-plant claim missing actual civil, installed process/E&M, hydraulic/interface and trial/handover work; require not-applicable reasons for absent units and separate atomic extension rows for every occurring unlisted exchange. Classify standalone long-distance water pipes/local water or sewer mains separately. | un-cpc-treatment-2025 |
v_identity | all inventory rows | Reject species, receiving medium, state, concentration, grade, reference-property or gate mismatch; keep exact unresolved rows and disclosure. A candidate reference UUID gap registered for accepted_entity does not prove method approval or usable provider links. | |
v_water_emissions | utilities; commission | Check fresh/saline withdrawal, supplied water, dewatering, export, storage, direct receptor and measured individual emissions without double counting; missing density/speciation/flow evidence stays unresolved. Ambient TSP/noise does not pass a molecular-emission check. | epa-concrete-washout-2012; epd-shek-wu-hui-2007 |
v_allocation | shared construction and reusable assets | Verify causal beneficiaries, nonnegative conserving shared fractions and cumulative same-asset manufacturing share ≤ 1 over all projects/periods. Require actual supported lifetime/activity evidence; unknown asset burdens remain review, never per-project reset. | |
v_dataset_claim | dataset | Report accepted inputs, checked and unchecked work packages, identity/data gaps and construction-only life-cycle coverage. Numerical consistency cannot establish scientific review, local compliance, completeness of linked cradle-to-gate providers or full-life approval. |
10. Published Dataset Profile
| Field | Value |
|---|---|
| dataset_role | foreground_dataset |
| downstream_use | secondary_dataset; background_dataset |
| allowed_use | Construction-to-handover of the declared complete sewage/water treatment or sewer-system entity with actual route, geometry and test duty; optional upstream linking with verified provider interfaces; comparisons only on matched actual functions and scope |
| excluded_use | Default whole-life or m3 operating-treatment result; shell-only or equipment-only represented as full plant; unbuilt ultimate capacity; guessed mass/life/mix; automatic environmental-compliance or scientific approval |
| required_metadata | All reference qualifiers; work/trial dates; actual site and as-built register; treatment-route and existing-stage interfaces; supplier/transport gates; actual measured material/equipment/water/energy; conserved capital/shared allocation ledger |
| required_quality_disclosure | Identity and unmeasured-exchange gaps; unsupported conversions; capital denominator uncertainties; coverage of all route-selected civil/process/E&M work; unlinked upstream burdens; noise/land/odor and actual release evidence; later-life exclusions |
| update_trigger | Changed delivered function, geometry, capacity-test conditions, treatment technology, staged boundary, provider gate, actual inventory, capital assumptions or identity/source evidence |
11. Data Sources
| Source id | Type | Reference | Used for |
|---|---|---|---|
| un-cpc-treatment-2025 | official_guidance | UN Statistics Division, CPC Version 3.0 Explanatory Notes, 30 June 2025, printed/PDF p.281, subclass 53253. https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Exp_Notes_30Jun2025.pdf | Classification meaning including sewer systems and plant categories; excludes long-distance water pipelines and local water/sewer mains. No construction recipe. |
| wsd-shatin-project | official_guidance | Hong Kong WSD, In-situ Reprovisioning of Sha Tin Water Treatment Works – South Works – Advance Works and Main Works, Project section. https://www.wsd.gov.hk/en/core-businesses/major-infrastructure-projects/in-situ-reprovisioning-of-sha-tin-water-treatment/index.html | Project-specific site formation, ancillary buildings, residual management, pumps and treatment units; do not adopt project capacity, cost or schedule as defaults. |
| dsd-shek-wu-hui-project | official_guidance | Hong Kong DSD, PWP 4406DS, Shek Wu Hui sewage treatment works – further expansion phase 1A, Project Scope. https://www.dsd.gov.hk/EN/Our_Projects/All_Projects/4406DS%20.html | Actual bioreactor/final-sedimentation conversion to MBR and civil/E&M interfaces, not universal requirement for MBR. |
| wsd-water-treatment | official_guidance | Hong Kong WSD, Water Treatment in Hong Kong, March 2018, PDF pp.1–3; publication date on p.3. https://www.wsd.gov.hk/filemanager/en/share/pdf/water_treat_a.pdf | Historical documented alternative clarification and filtration routes, anthracite/sand media and chemical use; powdered activated-carbon dosing is not evidence of a granular activated-carbon bed. Qualitative Hong Kong support; no generic recipes or doses. |
| wsd-desalination | official_guidance | Hong Kong WSD, Desalination, Principle of Reverse Osmosis and Tseung Kwan O Desalination Plant Project sections. https://www.wsd.gov.hk/en/core-businesses/water-resources/desalination/index.html | RO desalination plant and distinction between design, construction and operation; do not adopt cost, output capacity or recovery defaults. |
| epd-shek-wu-hui-2007 | official_guidance | Hong Kong EPD, Shek Wu Hui STW Further Expansion Phase 1 Environmental Monitoring and Audit Report, December 2007, Future Key Issues; sections 2.1 and 6.1. https://www.epd.gov.hk/eia/files/applications/en/pp_484/aep_2476/progress/action_16199/emar200712dc200501/html/emar200712dc200501.htm | Historical earthworks/retaining/pipe/FRP-cover and watertightness-test case; monitoring distinction for TSP and noise. Not current legal limits or emission factors. |
| dsd-sewage-overview-2017 | official_guidance | Hong Kong DSD, Sustainability Report 2016–17, Overview of Sewage Treatment and Sewerage System, HATS and San Wai STW subsections. https://www.dsd.gov.hk/Documents/SustainabilityReports/1617/en/overview_of_sewage_treatment.html | Historical treatment/commissioning, pumping/sludge and UV routes; DBO operation is separate after construction. No adopted contract term as service life. |
| usace-concrete-1994 | handbook | USACE EM 1110-2-2000, Standard Practice for Concrete for Civil Works Structures, 1 February 1994, section 7-6, printed pp.7-6–7-7 / PDF pp.68–69. https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_1110-2-2000.pdf | Historical concrete preparation, forms, placement equipment, joints and curing only; no source numeric design, mix, pressure or dimensional requirement is adopted. |
| epa-concrete-washout-2012 | official_guidance | US EPA, Stormwater Best Management Practice: Concrete Washout, EPA-833-F-11-006, February 2012, PDF pp.1–2. https://www.epa.gov/sites/default/files/2015-11/documents/concretewashout_0.pdf | Historical washout-water/solid collection and potential environmental fate; no automatic release, pollutant amount, recovery percentage or legal approval. |
| epa-gac-treatment | official_guidance | US EPA, Overview of Drinking Water Treatment Technologies, Granular activated carbon section. https://www.epa.gov/sdwa/overview-drinking-water-treatment-technologies | GAC adsorption media and separate pressure-vessel/gravity-basin configurations; actual precursor, initial fill and construction arrangement require project evidence. No removal efficiency, cost, bed size or loading default adopted. |
| epa-dechlorination-history-2003 | official_guidance | US EPA, Managing Urban Watershed Pathogen Contamination, EPA/600/R-03/111, September 2003, section 3.2.5.1, printed p.3-8 / PDF p.92; section 3.2.6.3, printed p.3-20 / PDF p.104. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P1009F8P.TXT | Historical sodium-bisulfite solution dechlorination of wet-weather wastewater; chemical-option evidence only. Actual construction trial water and quantities need project records. No numerical dosing, cost, performance or present regulatory statement adopted. |
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