Net-zero impact on the groundwater environment

TL;DR

The Energy and Water Agency’s Green Paper of November 2023 [1] proposes that groundwater sources run by the Water Services Corporation (WSC) stay outside the new abstraction licensing framework, “given that the Corporation is moving towards the achievement of a net-zero impact on the groundwater environment through its operations”, and that WSC’s annual abstraction “will be capped at a maximum level of 14 Mm³ up to 2030”. We tested both statements against WSC’s production reports, Eurostat and the EU’s groundwater-body assessments.

1. The cap is not tight. WSC groundwater production was 11.5 million m³ in 2025 [6, 7], 82% of the proposed 14. The highest year we read (13.5 million m³ in 2016) was already 96% of it, so the ceiling sits about 4% above that year and 21% above 2025.
2. “Net-zero impact” has no definition, baseline or date in the Green Paper. Sapiano (Energy and Water Agency, 2020) describes it as giving back to the aquifer environment “at least, as much water” as WSC abstracts, by recharge and by supplying treated wastewater in place of groundwater [2]. We found no published balance.
3. The give-back we can count is small. New Water (treated wastewater) was 1.6 million m³ in 2022 [1]: 13% of WSC’s abstraction that year, and meant for crop irrigation rather than to replace WSC’s own boreholes. WSC’s stated maximum of 7 million m³ [3] would be 61% of 2025 abstraction, before any recharge, which no source we read quantifies.
4. The aquifers are still in poor quantitative status. The Green Paper says good status “will not be achieved” for the main sea-level bodies [1].
5. Pledge label: not measurable (as of 11 October 2026). The aim cannot be checked as worded; the cap can, and is met so far. A gap in what was published, not a finding of failure.

1. Not measurable
2. Not yet due
3. On track
4. Off track
5. Met
6. Missed

IN THIS REPORT

1 The statements and their sources

Our candidate record combined statements from several documents, and some of its wording came from search summaries. We read the Green Paper in full and two WSC pages, and separate what each says.

2 Method

Question. Is WSC’s groundwater abstraction within the proposed cap, and is there evidence that it is “moving towards” a net-zero impact on the groundwater environment? Can either be checked as worded?

Cap. We compare the 14 million m³ with WSC’s reported groundwater production: 2016 from its 2016 annual report [6] and 2022–2025 from the 2025 report’s production chart [7], transcribed for Claim Check 009. Years 2017–2021 were not read. Eurostat’s public-supply groundwater abstraction (2024, estimated) [8] is shown for comparison; it measures something different and runs about 1.2 million m³ above WSC’s own 2024 figure.

Net-zero impact. We take the concept as Sapiano [2] describes it and count what can be counted: WSC’s own abstraction, the New Water volume (Green Paper [1]; WSC [3]) and national abstraction and recharge (Eurostat [8]). Aquifer status is from the EEA’s WISE reporting of the third river basin management plan cycle (status assessed 2021) [9]. Code: tools/cc-108-report/calc.py; results in data/cc-108/checks.csv.

Grades. The Green Paper and WSC reports are self-reported or agency documents (C); Eurostat figures are official statistics flagged as estimates (C); our arithmetic is an order-of-magnitude check and is labelled so.

3 The 14 million m³ cap

The 2025 chart values carry the small internal differences recorded for Claim Check 009.

Fairness to WSC and the Agency

• WSC’s production fell about 15% from 2016 to 2025 while its total production rose about 23% (Claim Check 039): groundwater’s share of its supply fell from 42% to 29%.
• The Green Paper proposes the cap and the exemption; it is a consultation document. We did not find the adopted regulation, so the cap is tested as a stated intention, not as a legal limit.
• The Green Paper also says WSC’s abstraction is “fully accounted for” and that its stations are monitored for salinity (p. 5) [1]. That is context for the exemption, not the reason the Green Paper gives for it.

4 ‘Net-zero impact’: what can be counted

What the counting shows

• Direction, yes; balance, not shown. WSC’s abstraction is lower than in 2016 and treated wastewater is being supplied, so “moving towards” is consistent with the numbers. But on Sapiano’s definition [2] the give-back must equal what is abstracted, and the quantified part is far from it: even at WSC’s stated maximum for New Water, 4.5 million m³ of 2025 abstraction would be unmatched, unless unquantified recharge makes up the difference.
• New Water mostly replaces other people’s groundwater. It is meant for crop irrigation [1], so it relieves the aquifer by displacing farm boreholes, not WSC’s own. That fits Sapiano’s definition, which counts treated wastewater “used in substitution of groundwater”, but it means the accounting is across users, and no source we read does it.
• The aquifer’s condition does not settle it either way. The sea-level bodies are in poor quantitative status, and the Green Paper says good status “will not be achieved” for them (p. 10) [1]. The Green Paper names over-abstraction as the cause of saline intrusion (p. 2) [1], and agriculture is the largest abstractor [8]; the status data do not isolate WSC’s share, and residence times of years to decades (Claim Check 009) mean one year cannot show recovery.
• No target date, no metric. The Green Paper says “moving towards”; it gives no year for reaching net zero and no indicator that would show it.

5 Testing the statements

6 Pledge label and requests for evidence

Why. The Green Paper states an intention (“moving towards”) and a proposed cap. The cap can be checked, and is met so far. The net-zero aim, which is the reason the Green Paper gives for the exemption, has no indicator, so delivery cannot be shown or refuted. A target is not a statement of fact, so we do not call it false; we label it Not measurable (Appendix A lists the six pledge labels).

What this label does not say. It does not say WSC is failing or that the exemption is wrong. Lower abstraction and wastewater reuse are sound aims. A checkable version would read: “From [year], WSC’s groundwater abstraction minus the volume it returns to or saves from the aquifer, measured as [method], will be zero or negative by [date].”

Evidence we are asking for

• From the Energy and Water Agency: the definition, baseline year, date and indicator behind “net-zero impact on the groundwater environment”, and whether the Green Paper’s cap and exemption were adopted.
• From WSC: annual groundwater abstraction by source since 2014, and the annual volume of New Water supplied and where it is used.
• From WSC and the Agency: any estimate of unintended aquifer recharge from the networks, and the 2018 framework document that Sapiano [2] cites.
• From the Agency: how the 14 million m³ is measured (metered abstraction or production) and how it relates to Eurostat’s public-supply series.

7 Limitations

• The Green Paper is a consultation proposal. We did not find the White Paper, regulation or any report on whether the cap and exemption were adopted (a web search of 11 Oct 2026 found only the Green Paper, its consultation pages and comment letters; ERA and legislation.mt were not searched in full).
• WSC’s 2016 and 2025 production series come from different reports; we did not verify that definitions match. Years 2017–2021 were not read. The 2025 values are read from a chart.
• We do not know whether the Green Paper’s “abstraction” means WSC’s reported production or metered abstraction, or how Eurostat’s public-supply figure is built.
• Page numbers for the Green Paper are the printed spread numbers (the PDF holds two pages per sheet). Sapiano’s page is the journal pagination (PDF page 7 of 8).
• The New Water maximum is a capacity statement from 2019, not an outturn. No New Water volume after 2022 was found, so the give-back figures are a lower bound on what is delivered today.
• The WSC pages were read live on 11 Oct 2026. We did not find the “equivalent volume” wording on them and did not read WSC’s 2018 framework document; the concept is taken from Sapiano’s description.

References

1. [1] Energy and Water Agency (Nov 2023). Green Paper on the Regulation of Groundwater Abstraction in the Maltese Islands, pp. 3, 5, 6, 10, 12. (Full text read 11 Oct 2026; page numbers are the printed spread numbers.) https://energywateragency.gov.mt/wp-content/uploads/2023/11/GREEN-PAPER.pdf
2. [2] Sapiano M. (2020). Integrated Water Resources Management in the Maltese Islands. Acque Sotterranee – Italian Journal of Groundwater 9(3):25–32. doi:10.7343/as-2020-477. (Full text read; open access; author at the Energy and Water Agency.) https://doi.org/10.7343/as-2020-477
3. [3] Water Services Corporation (2 April 2019). European Commission Endorses WSC’s ‘Net Zero-Impact’ Utility Project. News release. (Read live 11 Oct 2026.) https://www.wsc.com.mt/european-commission-endorses-wscs-net-zero-impact-utility-project/
4. [4] Water Services Corporation (16 April 2018). Towards a Net Zero-Impact Utility: new €100 million EU-funded project. (Read live 11 Oct 2026.) https://www.wsc.com.mt/towards-a-net-zero-impact-utility-new-e100-million-eu-funded-project-set-to-improve-water-quality-to-all-new-highs/
5. [5] Sustain Europe (6 November 2018). Closing the water loop – improving the sustainability of Malta’s water resources. Unsigned article. https://www.sustaineurope.com/closing-the-water-loop-%E2%80%93-improving-the-sustainability-of-malta%E2%80%99s-water-resources-20181105.html
6. [6] Water Services Corporation (2017). Annual Report 2016, p. 10. (Read in the Internet Archive copy for Claim Check 039.) https://www.wsc.com.mt/wp-content/uploads/2018/03/Annual_Report_-_16.pdf
7. [7] Water Services Corporation. Annual Report 2025, Figure 20 (groundwater production 2022–2025), as transcribed for Claim Check 009; parlament.mt refused this site’s request on 11 Oct 2026. https://parlament.mt/media/139352/wsc-annual-report-2025.pdf
8. [8] Eurostat. Water abstraction by source and sector (env_wat_abs) and renewable freshwater resources (env_wat_res), Malta; retrieved 5 Oct 2026. Values flagged ‘e’ (estimated). https://ec.europa.eu/eurostat/databrowser/view/env_wat_abs/default/table
9. [9] European Environment Agency. WISE Water Framework Directive database, groundwater bodies, Malta, 2nd and 3rd reporting cycles; retrieved 5 Oct 2026 for Claim Check 009 (data/cc-009/wise_gwb_status.csv). https://water.discomap.eea.europa.eu/arcgis/rest/services/WISE_WFD/WFD2022_GroundWaterBody_WM/MapServer/0
10. [10] MiŻien. Analysis code and outputs: tools/cc-108-report/; data/cc-108/.

Appendix A: series standards and verdict scale

Every investigation in this series follows the same rules so that verdicts are comparable and challengeable.

Pledge labels

A pledge is a promise of future action, so it cannot be true or false when it is made. It gets one of these labels instead of a verdict, with the date of the evidence behind it.

Confidence

High: multiple independent lines of evidence agree. Moderate: evidence is relevant but incomplete or indirect. Low: evidence is thin, second-hand or conflicting.

Evidence grades

A experiment · B observational study with a control or gradient · C review, guidance or official statistics · D assertion or anecdote. The Green Paper, WSC reports and Sapiano (an Energy and Water Agency author) are agency or self-reported documents (C); our own arithmetic is an order-of-magnitude estimate.

Standards

• Quote the speaker, not the headline, with outlet and date, and link the original where possible.
• Separate the claim from the evidence offered for it, and say who made which statement.
• Grade the evidence and show differing views side by side where the evidence is unsettled.
• State what we could not access or verify, and what would change the verdict either way.
• Ask for the missing evidence in specific, answerable requests.
• Offer a right of reply where a check finds a claim Not substantiated, Misleading or Contradicted (or a pledge Not measurable, Off track or Missed), before wider circulation, and append responses.
• Correct errors openly with a version number and change log.
• Whistle-blow only on evidence: a verdict of Misleading or Contradicted requires documents or data that can be shown, not inference.
• Check every side. Government, opposition, NGOs and developers are held to the same standard.

Appendix B: revision log