Name: Estimated and consented OWMS in Canterbury (as at 2025)

Display Field: district_name

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: Consented OWMS were captured from Environment Canterbury Consents records as at 2025. Estimated OWMS were derived by PHF Science from analysis of properties with buildings larger than 10 square metres which had no consented OWMS and were not connected to a centralised wastewater reticulation network from a territorial authority. A full description of the methodology is provided in the Journal of Hydrology New Zealand and further details are documented in the PHF Science Report "report "Estimating onsite wastewater densities and their associated Total Nitrogen and Total Phosphorus mass loading rates across Waitaha Canterbury" by Qui and Humphries, February 2026.

Copyright Text: PHF Science and Environment Canterbury

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 1329311.2550999997
YMin: 5015524.6639
XMax: 1687732.9791
YMax: 5354919.2074
Spatial Reference: 2193  (2193)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: consented
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value:
  Label: estimated OWMS
  Description: N/A
  Symbol:
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• Value: yes
  Label: consented OWMS
  Description: N/A
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Labeling Info:

Advanced Query Capabilities:

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Supports Count Distinct: true
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Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

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• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Join_Count ( type: esriFieldTypeInteger, alias: Join Count )
• TARGET_FID ( type: esriFieldTypeInteger, alias: Target FID )
• TARGET_FID_1 ( type: esriFieldTypeInteger, alias: Target FID )
• consented ( type: esriFieldTypeString, alias: Consented, length: 512 )
• OWMS_type ( type: esriFieldTypeString, alias: OWMS Type, length: 512 )
• TP_person_per_year_kg ( type: esriFieldTypeDouble, alias: TP person (kg/year) )
• TN_person_per_year_kg ( type: esriFieldTypeDouble, alias: TN person (kg/year) )
• avg_people_per_dwelling ( type: esriFieldTypeDouble, alias: Average people per dwelling )
• TN_loading_per_year_kg ( type: esriFieldTypeDouble, alias: TN loading (kg/year) )
• TP_loading_per_year_kg ( type: esriFieldTypeDouble, alias: TP loading (kg/year) )
• district_name ( type: esriFieldTypeString, alias: District Name, length: 512 )
• suburb_name ( type: esriFieldTypeString, alias: Suburb Name, length: 1073741822 )
• HydrologicalCatchmentName ( type: esriFieldTypeString, alias: Catchment Name, length: 100 )
• WELL_NO ( type: esriFieldTypeString, alias: Well No., length: 9 )
• SUPPLY_NAME ( type: esriFieldTypeString, alias: Supply Name, length: 254 )
• LocalCouncil ( type: esriFieldTypeString, alias: Local Council, length: 50 )
• ValuationNo ( type: esriFieldTypeString, alias: Valuation No, length: 15 )
• PublicURL ( type: esriFieldTypeString, alias: Public URL, length: 200 )
• StreetAddress ( type: esriFieldTypeString, alias: Street Address, length: 150 )
• LocalityName ( type: esriFieldTypeString, alias: Locality Name, length: 50 )
• LegalDescriptions ( type: esriFieldTypeString, alias: Legal Descriptions, length: 200 )
• DataSource ( type: esriFieldTypeString, alias: Data Source, length: 200 )
• SpatialAccuracy ( type: esriFieldTypeSmallInteger, alias: Spatial Accuracy )
• ProcessDate ( type: esriFieldTypeDate, alias: Process Date, length: 8 )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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