Groundwater Watch List GWWL «Draft Concept Report» 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Groundwater Watch List GWWL «Draft Concept Report» Rüdiger Wolter – expert Ronald Kozel – Switzerland and group of volunteers: Tim Besien – UK; Matthijs Bonte – CONCAWE; Jacqueline Claessens – Netherlands; Johannes Grath – Austria; Francis Delloye – Belgium; Ralph Eppinger – Belgium; Emanuele Ferretti – Italy; Falk Hilliges – Germany; Volker Laabs – ECPA; Dan Lapworth – UK; Dennis Lemke – CEFIC; Benjamin Lopez – France ; Dieter Schaefer – ECPA; Elisa Vargas Amelin - EU Commission; Rob Ward - UK Vienna (AT), 08.-09. October 2018
Already done: To do – next steps: 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Already done: Watch list process launched by WG GW (Brussels) April 2015ü Meeting group of volunteers (Berne) 1st draft 8./9.9.2015ü Presentation at SCG and Approval 9./10.11.2015ü 1st pilot study on Pharmaceuticals and report 2016ü Meeting group of volunteers (Vienna) 23./24.06.2016ü 2nd pilot study on PFAS 2017ü Meeting group of volunteers (Paris) 28.02.-01.03.2017ü Meeting group of volunteers (Paris) August 2018ü Finalisation of GWWL Concept & Methodology October 2018ü To do – next steps: Approval of GWWL Concept & Methodology end of 2018 Launch of the GWWL process 2019 Supporting EC review of Annexes I and II of GWD 2019 Report on PFAS pilot study 2018/19
Concept & Methodology Paper 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Concept & Methodology Paper New or (significantly) revised since CIS meeting in Berne (04 2018) based on discussion at Paris (08 2018) meeting and review of the Group of Volunteers: “Structure of the Groundwater Watch List (GWWL) process” (fig. 3.1) Results of Column I and Column II assessments are merged to a “Combined groundwater leaching potential score” (ranked List III) Ranked List III is combined with the “hazard potential” of substances to a “Integrated groundwater score” (ranked List IV) “Timeline of the GWWL process” (fig. 3.2) modified Chapter 5 skipped resp. partly integrated in text and annexes Text revised Berne: version 10.8 – Paris: version 10.9 – Review: version 11.3 – WG GW: version 12.0
New Groundwater Watch List process (concept) 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) New Groundwater Watch List process (concept) New: Scoring and combination of scores
All substances, except Annex I and II substances of GWD Prioritisation of substances based on existing monitoring data (column I) Criteria: presence in GW Prioritisation of substances based on substance properties (column II) Criteria: mobility and persistence and – if available – environmental emission, use-pattern and pathway Proved groundwater leaching potential score (ranked List I) Theoretical groundwater leaching potential score (ranked List II) ((Score N°PC) + (Score %° sites)) / 2 (annex 1.1) (Persistence score + Mobility score) / 2 (annex 1.2) Substance Proved groundwater leaching potential score PFOA 1 PFOS PFBPA ? Theoretical groundwater leaching potential score 0,8 0,65 Combined groundwater leaching potential score (ranked List III) Substance Combined groundwater leaching potential score PFOA 0,9 PFOS 0,825 PFBPA 0,8 (to be flagged) (Proved groundwater leaching score + Theoretical groundwater leaching score) / 2 (annex 1.3)
35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Determination of hazard Criteria: toxicological or ecotoxicological hazard Combined groundwater leaching potential score (ranked List III) Substance Combined groundwater leaching potential score PFOA 0,9 PFOS 0,825 PFBPA 0,8 Sulfamethoxazole 0,95 Toxicological or eco- toxicological hazard score 1 ? 0,38 Integrated groundwater score (ranked List IV) See Annex 1.5 (Combined groundwater leaching potential score + Toxicological or ecotoxicological hazard score) / 2 Substance Integrated groundwater score PFOA 0,95 PFOS 0,9125 PFBPA 0,8 (to be fiagged) Sulfamethoxazole 0,66
35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Integrated groundwater score (ranked List IV) GWWL Monitoring Sufficient monitoring data available? NO YES Selection of limited number (e.g. top 30) Relevant findings ? YES NO Groundwater Watch List GWWL List facilitating the Annex I and II process of GWD Deselection List (no relevant findings) Criteria for integration in “List Facilitating Annex I/II process of GWD”: Quantified in 4 or more MS and found at more than 10 sites in each of the countries
Detected but not quantified* 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Substances that could go to the “List facilitating Annex I/II process” No of MS/AC Substance Name Acronym Total number of sites Detected but not quantified* No of findings MS/AC with findings List Facilitating* 10 Perfluorooctanoic Acid PFOA 5736 38 1549 Perfluorooctane Sulfonate PFOS 6278 55 1430 9 Perfluorohexanoic Acid PFHxA 4662 1175 8 Perfluorohexane Sulfonate PFHxS 2328 124 873 7 Perfluoroheptanoic Acid PFHpA 4224 37 817 Perfluoropentanoic Acid PFPeA 2452 19 701 6 Perfluorobutane Sulfonate PFBS 2209 93 577 5 Perfluorobutanoic Acid PFBA 1189 552 4 Perfluorononanoic Acid PFNA 3752 2 195 Perfluorodecanoic Acid PFDA 2945 1 173 3 Perfluoroheptane Sulfonate PFHpS 787 77 Perfluorododecanoic Acid PFDoA 2830 62 Perfluoroundecanoic Acid PFUnA 2711 42 1H, 1H, 2H, 2H-Perfluorooctanesulfonic Acid H4-PFOS (6:2 FTS) 518 0 31 1H, 1H, 2H, 2H-Perfluorodecanesulfonic Acid H4-PFDeS (8:2 FTS) 242 0 24 Perfluorooctane Sulfonamide PFOSA 1715 22 10 PFAS were found in 4 or more MS/AC at 10 or more sites „List facilitating Annex I/II process“
All substances, except Annex I and II substances of GWD Prioritisation of substances based on existing monitoring data (column I) Criteria: presence in GW Prioritisation of substances based on substance properties (column II) Criteria: mobility and persistence and – if available – environmental emission, use-pattern and pathway Determination of hazard Criteria: toxicological or ecotoxicological hazard Proved groundwater leaching potential score (ranked List I) Theoretical groundwater leaching potential score (ranked List II) Combined groundwater leaching potential score (ranked List III) Integrated groundwater score (ranked List IV) GWWL Monitoring Sufficient monitoring data available? NO YES Selection of limited number (e.g. top 30) Relevant findings ? YES NO Groundwater Watch List GWWL List facilitating the Annex I and II process of GWD Deselection List (no relevant findings)
35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) New Timeline of the Groundwater Watch List GWWL process (fig. 3.2)
35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) First ideas for next data collection (substances or group of substances): Plasticizers Surfactants (different subgroups used for pesticides, health care products, ...) Non-relevant metabolites (large dataset available from D, B, CH). Microplastics Artificial Sweeteners 1,4-dioxine Biocides (includes pharmaceuticals, pesticides, surfactants) EDTA PAH (Polycyclic Aromatic Hydrocarbons) Veterinary medicines Solvents (e.g. 1,4-dioxine) Perchlorate (ClO−4.) Existing lists SIN (Substitute It Now) list: (http://chemsec.org/sin-list/). The list comprises around 1000 compounds with substances which have to be banned, based on REACH Indicators for bombs (TNT, dinitrofenol) Surface Water Watch List Shortlist Drinking Water Group PMT list (Persistent Mobile Toxic)
Lead and support of GWWL process 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Next steps: Set up of first GWWL (based on results of pharmaceuticals and PFAS pilot studies) Lead and support of GWWL process Identification of substances for the List Facilitating Annex I/II process (based on results of pharmaceuticals and PFAS pilot studies) Next data collection Report on PFAS pilot study Presentations of progress at WG GW meetings
Thank you for your attention ! 35th CIS Groundwater Working Group (WG GW) Plenary Meeting in Vienna (AT) Thank you for your attention !