ABCDEGHIJKLMNOPQRSTUVW
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Water AgencyYearSystem typeFactor TypeEmission Factor
(mt CO2e/AF)
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California Department of Water Resources2018WaterAnthropogenic Efficiency (market-based)0.2494
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WaterBiogenic Efficiency0.0000
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WaterAnthropogenic Delivery (market-based)0.2494
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WaterBiogenic Delivery0.0000
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Sonoma Water2018WaterAnthropogenic Efficiency (market-based)0.0009
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California Department of Water Resources2019WaterAnthropogenic Delivery (market-based)0.1328
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WaterBiogenic Delivery0.0000
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Helix Water District2019WaterAnthropogenic Efficiency (location-based)0.0475
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WaterAnthropogenic Efficiency (market-based)0.0475
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WaterBiogenic Efficiency (location-based)0.0003
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WaterBiogenic Efficiency (market-based)0.0003
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WaterAnthropogenic Delivery (location-based)0.0475
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WaterAnthropogenic Delivery (market-based)0.0475
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WaterBiogenic Delivery (location-based)0.0003
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WaterBiogenic Delivery (market-based)0.0003
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Metropolitan Water District of Southern California2019WaterAnthropogenic Delivery (market-based)0.0705
21
Sonoma Water2019WaterAnthropogenic Efficiency (market-based)0.0016
22
WaterAnthropogenic Delivery (market-based)0.0016
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California Department of Water Resources2020WaterAnthropogenic Efficiency (market-based)0.0993
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WaterBiogenic Efficiency0.0000
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WaterAnthropogenic Delivery (market-based)0.0993
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WaterBiogenic Delivery0.0000
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Metropolitan Water District of Southern California2020WaterAnthropogenic Efficiency0.14
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WaterAnthropogenic Delivery0.14
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Sonoma Water2020WaterAnthropogenic Efficiency (market-based)0.0013
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California Department of Water Resources2021WaterAnthropogenic Efficiency (market-based)0.1908
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WaterBiogenic Efficiency0.0000
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WaterAnthropogenic Delivery (market-based)0.1908
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WaterBiogenic Delivery0.0000
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Helix Water District2021WaterAnthropogenic Efficiency (location-based)0.0520
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WaterAnthropogenic Efficiency (market-based)0.0520
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WaterBiogenic Efficiency (location-based)0.0003
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WaterBiogenic Efficiency (market-based)0.0003
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WaterAnthropogenic Delivery (location-based)0.0520
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WaterAnthropogenic Delivery (market-based)0.0520
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WaterBiogenic Delivery (location-based)0.0003
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WaterBiogenic Delivery (market-based)0.0003
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Metropolitan Water District of Southern California2021WaterAnthropogenic Efficiency0.1665
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WaterAnthropogenic Delivery0.1665
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Sonoma Water2021WaterAnthropogenic Efficiency (market-based)0.0077
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California Department of Water Resources2022WaterAnthropogenic Efficiency (market-based)0.0091
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WaterBiogenic Efficiency0.0000
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WaterAnthropogenic Delivery (market-based)0.0091
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WaterBiogenic Delivery0.0000
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Sonoma Water2022WaterAnthropogenic Efficiency (market-based)0.0013
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California Department of Water Resources2023WaterAnthropogenic Efficiency (market-based)0.253961
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WaterBiogenic Efficiency0.0000
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WaterAnthropogenic Delivery (market-based)0.253961
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WaterBiogenic Delivery0.0000
54
Sonoma Water2023WaterAnthropogenic Efficiency (market-based)0.0023
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Source: These emission factors have been reported by participants in the Water-Energy Nexus Registry using methods in the Water-Energy Nexus Registry Protocol. Systems can be either water or wastewater.

AF = Acre foot
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