Transparency Catalog

LCA & material health results & interpretation Eco Drake® CST744E

Scope and summary

Cradle to gate
Cradle to gate with options
Cradle to grave

Functional unit

One toilet in a U.S. household that functions for 10 years. The period of 10 years is modeled as the period of application based on the average economical lifespan for residential applications. The technical lifespan is longer. The economical lifespan of commercial applications can be longer or lower due to aesthetic replacements or more intense use. The implication is that the LCA model assumes that the application ends at year 10 and that the materials will be treated in an end-of-life scenario.

Reference service life: 10 years

Default use phase scenario

10 years of service in a U.S. household with 1.28 gallon/use and 5.1 flushes/day and 2.6 people resulting in 61,951 gallons.

What’s causing the greatest impacts

All life cycle stages

The use stage and the production stage are dominating the results for all impact categories. For the use stage, the significant contribution is mostly due to the embedded energy arising from acquisition, treatment and distribution of the water used during the operation of the product (40-84%). The production stage has a significant contribution to ozone depletion (emissions from natural gas exploration and transportation, crude oil production and the enrichment of uranium in nuclear power plants), fossil fuel depletion (mostly defined by the natural gas at the kiln and its extraction, crude oil production and the production of polypropylene) and non-carcinogens (mostly from the production of zinc and copper and disposal of hard coal ash). The contributions covered under the construction/installation stage are mostly associated with the product delivery to the market. The recovery stage includes recycling benefits by preventing the need to produce primary materials. Recycling is a relevant factor as it has a contribution from 1 to 20% to the impact categories. The end-of-life scenario includes recycling benefits from preventing the need to produce primary materials. It shows up with a non-significant contribution to the results. The end-of-life stage that includes the processes for dismantling and final waste treatment of the product does not have a significant impact.

Production stage

The ceramic parts dominate all impact categories except for non-carcinogenics and eutrophication. The zinc and brass parts together with the brass turning process have significant contributions to the non-carcinogenics and eutrophication impact categories. The remaining parts and processes contribute between 10% and 26% of the overall impacts in the rest of the categories.

Sensitivity analysis

There are no sensitivity results that lead to variations greater than 10% in the LCA results.

TOTO PeoplePlanetWater™ programs improving environmental performance

Dual-Max®, E-Max®, Tornado Flush™, 1G®, and EcoPower® reduce water consumption in the use phase
Energy efficiency programs optimize the firing process
50% electricity from renewable energy
100% of post-industrial ceramic waste is recycled

See how we make it greener

LCA results

Life cycle stage	Production	Construction	Use	End of Life	Recovery
Information modules: Included \| Stages D2 and D3 are being excluded Installation and deconstruction/demolition are mostly manual. The toilets and/or urinals should not need repair, maintenance or replacement during the modeled life time. Operational energy use is irrelevant to the life cycle of the modeled product. Reuse and energy recovery are not modeled for toilets and/or urinals.	A1 Raw Materials	A4 Transporation/ Delivery	B1 Use	C1 Deconstruction/ Demolition	D1 Recycling
	A2 Transportation	A5 Construction/ Installation	B2 Maintenance	C2 Transportation	D2 Recovery
	A3 Manufacturing		B3 Repair	C3 Waste processing	D3 Reuse
			B4 Replacement	C4 Disposal
			B5 Refurbishment
			B6 Operational energy use
			B7 Operational water use

SM Single Score

Impacts per 10 years of service	7.51 mPts	0.0889 mPts	18.2 mPts	0.062 mPts	-0.0428 mPts
Materials or processes contributing >20% to total impacts in each life cycle stage	Ceramic parts production as well as well zinc and brass parts together with zinc turning process.	Transportation of the product to installation site or consumer and disposal of packaging.	Volume of water use during the operation of the product and the embedded energy use (such as electricity) in the water used.	Transport to waste processing, waste processing and disposal of material flows transported to a landfill.	Plastic and metal components' recycling processes.

TRACI

Life cycle stage	Production	Construction	Use	End of Life	Recovery

Ecological damage

Impact category	Unit
Acidification	kg SO₂ eq Kilograms of Sulfur Dioxide equivalent Acidification processes increase the acidity of water and soil systems and causes damage to lakes, streams, rivers and various plants and animals as well as building materials, paints and other human-built structures.	5.84E-01	1.15E-01	1.42E+00	5.99E-03	-1.43E-02
Ecotoxicity	CTU_e Comparative Toxic Units of Ecotoxicity Ecotoxicity causes negative impacts to ecological receptors, and indirectly, to human receptors through the impacts to the ecosystem.	8.05E+01	3.41E+01	1.31E+02	1.85E+00	-1.62E+00
Eutrophication	kg N eqKilograms of Nitrogen equivalent Eutrophication is the enrichment of an aquatic ecosystem with nutrients (nitrates and phosphates) that accelerate biological productivity (growth of algae and weeds) and an undesirable accumulation of algal biomass which impacts industry, agriculture, drinking, fishing and recreation and causes death of fish and shellfish, toxicity to humans, marine mammals and livestock, and reduces biodiversity.	4.74E-02	7.84E-03	1.19E-01	5.39E-04	-3.34E-03
Global warming (Embodied carbon)	kg CO₂ eqKilograms of Carbon Dioxide equivalent Global warming is an average increase in the temperature of the atmosphere near the Earth’s surface and in the troposphere, which can contribute to change in global climate patterns and is caused by the increase of the sources of greenhouse gases and decrease of the sinks due to deforestation and land use. GW leads to problems in human health, agriculture, forest, water source and damage to species and biodiversity as well as coastal areas.	8.82E+01	1.47E+01	2.11E+02	2.03E+00	1.01E+00
Ozone depletion	kg CFC-11 eq Kilograms of Trichlorofluoromethane equivalent Ozone depletion is the reduction of ozone in the stratosphere caused by the release of ozone depleting chemicals. Ozone depletion can increases ultraviolet B radiation to the earth which can adversely affect human health (skin cancer and cataracts and immune-system suppression) and other system (marine life, agricultural crops, and other vegetation) and causes damage to human-built materials.	9.47E-06	6.05E-09	8.89E-06	1.16E-07	-1.15E-07

Human health damage

Impact category	Unit
Carcinogenics	CTU_h Comparative Toxic Units of Human cancerous toxicity Carcinogens have the potential to form cancers in humans.	6.93E-07	1.84E-07	4.46E-06	1.35E-08	-3.15E-08
Non-carcinogenics	CTU_h Comparative Toxic Units of Human non-cancerous toxicity Non-Carcinogens have the potential to causes non-cancerous adverse impacts to human health.	1.52E-05	1.77E-06	1.98E-05	1.02E-07	-7.80E-07
Respiratory effects	kg PM_2.5 eqKilograms of Particulate Matter equivalent which are smaller than or equal to 2.5 micrometers in diameter Particulate matter concentrations have a strong influence on chronic and acute respiratory symptoms and mortality rates.	3.73E-02	2.02E-03	9.41E-02	3.72E-04	-1.51E-03
Smog	kg O₃ eqKilograms of Ozone equivalent Smog formation (photochemical oxidant formation) is the formation of ozone molecules in the troposphere by complex chemical reactions which are influenced by ambient concentrations of oxides of nitrogen (NOx), volatile organic compounds (VOCs), the mix of organic compounds (OCs), temperature, sunlight and convective flows. Ozone concentrations in the Earth’s atmosphere above the natural trace amounts lead to detrimental impacts on human health and ecosystems.	4.30E+00	3.26E+00	9.82E+00	1.61E-01	-1.98E-01

Additional environmental information

Impact category	Unit
Fossil fuel depletion	MJ surplus Mega Joule, lower heating value Fossil fuel depletion is the surplus energy to extract minerals and fossil fuels.	1.91E+02	2.42E+01	1.43E+02	2.03E+00	-3.36E+00

References

LCA Background Report
TOTO Sanitary Ceramic Products LCA Background Report (public version), TOTO 2014

SM Transparency Report Framework
Part A: LCA Calculation Rules and Background Report Requirements (Draft V2) (based on ISO14040-44, ISO14025 and EN15804)
Part B: Product Group Definition – Residential Toilets

"Transparency Reports™ / environmental product declarations enable purchasers and users to compare the potential environmental performance of products on a life cycle basis. They are designed to present information transparently to make the limitations of comparability more understandable. TRs/EPDs of products that conform to the same PCR and include the same life cycle stages, but are made by different manufacturers, may not sufficiently align to support direct comparisons. They therefore, cannot be used as comparative assertions unless the conditions defined in ISO 14025 Section 6.7.2. ‘Requirements for Comparability’ are satisfied." EPDs from different programs (using different PCR) may not be comparable. TRs/EPDs cannot be compared if they do not have the same functional unit, reference service life, and building service life.