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Data.

This dataset was collected by Citizen Scientists at an official 'Survey Area' as part of the Litter Intelligence long-term litter monitoring programme. The data are freely and openly accessible to anyone. Download the raw data, share this survey, and learn more about the data collection methodology through the links at the bottom of the page.

Litter Survey

beach-icon Beach.

Porirua Harbour - Porirua Stream Estuary

17 June 2026

Kids Enhancing Tawa Ecosystems (KETE)

Callie Evans

Overview

B

40

30.0

43.3

50m x 4m

Sand

Items per 1,000m2

5190

Products

1038

2328

Type Count Weight (g)
Plastic 780 1563
Resin pellets B N/A
Bottles <= 2 L 6 137
Plastic sheeting 207 314
Lollipop sticks 23 10
Cable ties & zip ties 6 8
Clothes pegs 4 8
Plastic utensils 1 7
Plastic bags 31 31
Gardening & farming related 15 104
Cosmetics and medical packaging 9 74
Food wrappers 200 161
Vapes 2 35
Cigarette lighters 3 80
Pens & Stationery 5 50
Unidentifiable hard plastic fragments 162 225
Toys, sport, & recreation (Plastic) 11 13
Cigarettes, butts & filters 2 1
Straws 5 3
Bottle caps & lids 81 253
Rope 3 47
Bottle neck rings 4 2
Foamed Plastic 189 309
Foam sponge 13 44
Polystyrene insulation or packaging 151 120
Foam glazier spacers 3 1
Other Foamed Plastic 12 137
Toys, Sports & Recreation (Foamed Plastic) 10 7
Wood 28 58
Corks 1 9
Processed timber & pallet crates 27 49
Fabric & Textiles 19 166
Other cloth 19 166
Metal 11 75
Aluminium drink cans 5 66
Foil wrappers 6 9
Rubber 9 150
Toys, Sports & Recreation (Rubber) 8 148
Construction & Automotive 1 2
Glass & Ceramic 1 5
Glass or ceramic fragments 1 5
Other 1 2
Paraffin or wax 1 2

Materials

  • Would you like to analyse the data yourself?
  • Or share if you think this data would be interesting to others.
  • If you would like to learn how this data was collected. Our Methodology

Previous survey in this area

Porirua Harbour - Porirua Stream Estuary Porirua City Council
03 May, 2024
Items per 1,000m2
1330
81%