Direct emissions
60,100
tCO2e
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Sustainability
Scope
REPORTED REPORTED REPORTED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED ESTIMATED 
Read the full scoring methodologyOur white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10.Download the white paper (PDF)
Explore carbon emissions data for Southern Water Services Limited. Mycelium helps you review reported emissions, disclosure status, Scope 1, Scope 2 and Scope 3 data, climate targets and sustainability information in one company profile.
This profile brings together available carbon emissions data for Southern Water Services Limited, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. It is one entry in the Mycelium emissions database. Read how we source and check this data.
Emissions
Carbon emissions
Total yearly emissions across all scopes
566,651tCO2e(Location Based)(Mycelium adjusted)
- Reported by Southern Water Services Limited
- 445,300 tCO₂e
- Estimated by Mycelium
- 121,351 tCO₂e
Southern Water Services Limited reported 79% of the adjusted total. Mycelium estimated the remaining 21% for the categories it did not disclose. Southern Water Services Limited reported a Scope 3 total of 300,500 tCO₂e but did not break it down into the 15 categories. The model of the categories it did not report comes to more than that, so the adjusted total counts the model, with the reported figure inside it.
Scope 1
tCO2e
60,100
Scope 2 (Location Based)
tCO2e
84,700
Scope 3 total
tCO2e
421,851
Figures from page 96 of the source report
Scope 3 reported
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
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See the scope breakdownProvenance
Emissions
Factors
0.299kgCO2e / $
Supplier specific emission factors (kgCO2e / $)
Modelled
Reported
UpstreamScope 1, 2 + upstream Scope 3
0.299
0.145
Total+ all Scope 3
–
0.447
Per US dollar of revenue. Mycelium models the upstream factor only.
Which figure should I use?
Estimating your own supply-chain emissions from spend with this company? Use Upstream Modelled. The GHG Protocol defines purchased-goods emissions as cradle-to-gate, which means this company's own operations plus its upstream supply chain. Any of those emissions the company has not disclosed are filled with modelled estimates, so a transparent company is not unfairly penalised against one that simply has not reported.
Looking at what the company filed itself? Use the Reported column. Total Reported also includes downstream emissions, such as the lifetime use of the products this company sells, which the GHG Protocol attributes to the users of those products rather than to customers buying goods and services.
Reported counts only emissions the company has filed itself. A blank or low Reported cell does not mean those emissions do not exist, just that the company has not disclosed them. When Upstream Reported sits close to Upstream Modelled, that is a positive signal: the company has disclosed most of its upstream emissions.
Sustainability
Snapshot
Based on reported data, retrieved with AI
- Southern Water Services Limited reported 445,300 tCO₂e in 2023.
- Scope 3 accounted for 67% of reported emissions.
- Scope 2 reported under the location based methodology.
According to available emissions disclosures, Southern Water Services Limited reported total yearly emissions of 445,300 tCO₂e in 2023. Scope 3 emissions accounted for 67% of the reported footprint, indicating supply chain activity, purchased goods and services, business travel, and wider operational dependencies were the most significant contributors to the company's carbon footprint.
The company achieved a Mycelium Score of 2.2, placing it below average for its sector for sustainability performance, and received a transparency score of 39.3, pointing to very little public detail on their key emissions.
Scope
breakdown
Scope 1 emissions
Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.
Scope 2 emissions
Indirect emissions from purchased energy, including electricity, heating and cooling.
Location based USED IN TOTAL
84,700
tCO2eMarket based
0
tCO2eScope 3 emissions
Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.
Southern Water Services Limited reported a Scope 3 total of 300,500 tCO₂e but did not break it down into the 15 categories. Mycelium's model of the categories it did not report comes to more than that, so the estimates below replace it in the adjusted total, with the reported figure counted inside them. The reported figure is not discarded, and you can see it in the downloads below.
Cat 1
Purchased goods & services
34,854
tCO2eCat 2
Capital goods
66,015
tCO2eCat 3
Fuel & energy related activities
8,565
tCO2eCat 4
Upstream transportation & distribution
4,551
tCO2eCat 5
Waste generated in operations
6,789
tCO2eCat 6
Business travel
350
tCO2eCat 7
Employee commuting
2,485
tCO2eCat 8
Upstream leased assets
29,460
tCO2eCat 9
Downstream transportation & distribution
1,058
tCO2eCat 10
Processing of sold products
125,851
tCO2eCat 11
Use of sold products
114,397
tCO2eCat 12
End-of-life treatment of sold products
8,841
tCO2eCat 13
Downstream leased assets
5,617
tCO2eCat 14
Franchises
–
tCO2eCat 15
Investments
13,019
tCO2e14 values were derived via Mycelium's normalisation process rather than reported by the company. The company's own Scope 3 total is reported, it was simply filed as a single figure with no category split. A cell marked “ESTIMATED” is a figure the company did not disclose, modelled by Mycelium. Cells marked “–” were not disclosed and could not be modelled.
Verification
Independent third parties involved in checking or preparing Southern Water Services Limited's emissions data.
Independent assurance
Independently assured(limited assurance)by Deloitte LLPfor 2023
Contact Info
Website
www.southernwater.co.ukCountry
United Kingdom
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How scoring works
How the Mycelium Score is calculated
The Mycelium Score is out of 10. Up to 6.5 points reflect carbon intensity vs peers in the same NACE section (emissions normalised against revenue, log-scaled between the 5th and 95th percentile of each company's latest reporting year in that section; a section needs at least 5 companies to be benchmarked). The band above 6.5 is earned through verified data quality on a claimed profile: declaring every reporting category yourself (up to 2.0), preparation by a carbon accountant (2.0) and independently audited figures (2.0). The total is multiplied by the transparency score and capped at 10. A disclosure with an implausibly large figure (Scope 1 or 2 over 300 million tonnes, a Scope 3 figure over 2 billion tonnes or a total over 2.5 billion tonnes) is not scored until it has been checked.
A higher score means lower carbon intensity than sector peers, backed by data that's third-party verified, claimed by the company, and fully disclosed. Southern Water Services Limited's score sits at the top of this page and in the score panel. Without a revenue figure to measure carbon intensity, or an industry classification to compare it within, a company has no score.
How the Transparency Score is calculated
The Transparency Score is the share of a company's estimated footprint that it reported itself, graded from A (very high) down to F (very low). Where a category is missing, Mycelium models what it would hold for a company of that size and industry and counts it as undisclosed, so an unreported category where the bulk of emissions sit hurts far more than a minor one. Unreported downstream categories (9 to 15) count at a quarter of their modelled size in this share; the carbon intensity behind the score still counts them in full. A Scope 3 total filed without a category breakdown earns very little credit for the part left unattributed, because it does not show which categories are inside it: a company can count business travel, leave purchased goods out entirely, and the total looks the same. Without a revenue figure the footprint cannot be modelled, so the company has no Transparency Score.
For Southern Water Services Limited, the single biggest gap is Processing of sold products (Scope 3 Category 10). Mycelium estimates it accounts for around 22% of the company's estimated footprint, yet it hasn't been disclosed. Leaving a bucket this large unreported is what's holding the transparency score down.
Other material categories Southern Water Services Limited hasn't disclosed:
- Use of sold products (Scope 3 Category 11), around 20% of the estimated footprint
- Capital goods (Scope 3 Category 2), around 12% of the estimated footprint
- Purchased goods & services (Scope 3 Category 1), around 6% of the estimated footprint
In total, roughly 74% of Southern Water Services Limited's estimated emissions sit in categories it hasn't reported. Disclosing these would be the fastest way to raise the transparency score.
Read the full scoring methodologyOur white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10.Download the white paper (PDF)Compare Southern Water Services Limited with similar companies
Southern Water Services Limited carbon emissions FAQs
What are Southern Water Services Limited's carbon emissions?
In its 2023 reporting year, Southern Water Services Limited disclosed total emissions of 445,300 tCO2e across all scopes. Including Mycelium estimates for undisclosed categories, the adjusted total is 566,651 tCO2e. Scope 3 accounted for the largest share of the reported total, around 67%.
Does Southern Water Services Limited report Scope 1, Scope 2 and Scope 3 emissions?
For 2023, Southern Water Services Limited's available disclosure covers Scope 1 (60,100 tCO2e), Scope 2 (84,700 tCO2e) and a Scope 3 total of 300,500 tCO2e without a category breakdown. Figures not reported by the company are shown as modelled estimates and labelled as such.
How transparent is Southern Water Services Limited's emissions reporting?
Southern Water Services Limited has a Mycelium transparency score of 39.3 out of 100. The score is the share of the company's estimated footprint that it reported itself, so an undisclosed category where most of its emissions sit weighs far more than a minor one.
Is Southern Water Services Limited sustainable?
Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. Southern Water Services Limited has a Mycelium Score of 2.2 out of 10, which reflects its emissions intensity against sector peers together with how transparent and well-verified its reporting is. The emissions figures and disclosure documents on this page give the fuller picture.
Is Southern Water Services Limited environmentally friendly?
Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. Southern Water Services Limited disclosed 445,300 tCO2e for 2023, and its Mycelium Score of 2.2 out of 10 shows how that performance compares with similar companies in its sector.
Learn more about our methodology and where this data comes from.