# Commission Implementing Decision (EU) 2018/840 of 5 June 2018 establishing a watch list of substances for Union-wide monitoring in the field of water policy pursuant to Directive 2008/105/EC of the European Parliament and of the Council and repealing Commission Implementing Decision (EU) 2015/495 (notified under document C(2018) 3362), Annex: Watch list of substances for ... monitoring as set out in Article 8b of Directive 2008/105/EC

Extent: E+W+S+N.I.

Chemical Abstracts Service
European Union number – not available for all substances
To ensure comparability of results from different Member States, all substances shall be monitored in whole water samples.
Extraction methods:
LLEliquid liquid extraction
SPEsolid-phase extraction
Analytical methods:
GC-MSGas chromatography-mass spectrometry
LC-MS-MSLiquid chromatography (tandem) triple quadrupole mass spectrometry
Erythromycin (CAS number 114-07-8, EU number 204-040-1), Clarithromycin (CAS number 81103-11-9), Azithromycin (CAS number 83905-01-5, EU number 617-500-5)
Imidacloprid (CAS number 105827-78-9/ 138261-41-3, EU number 428-040-8), Thiacloprid (CAS number 111988-49-9), Thiamethoxam (CAS number 153719-23-4, EU number 428-650-4), Clothianidin (CAS number 210880-92-5, EU number 433-460-1), Acetamiprid (CAS number 135410-20-7/160430-64-8)
Name of substance/group of substances
CAS number
EU number
Indicative analytical method
Maximum acceptable method detection limit (ng/l)
17-Alpha-ethinylestradiol (EE2)
57-63-6
200-342-2
Large-volume SPE - LC-MS-MS
0,035
17-Beta-estradiol (E2), Estrone (E1)
50-28-2,
53-16-7
200-023-8
SPE - LC-MS-MS
0,4
Macrolide antibiotics
SPE - LC-MS-MS
19
Methiocarb
2032-65-7
217-991-2
SPE - LC-MS-MS
or GC-MS
2
Neonicotinoids
SPE - LC-MS-MS
8,3
Metaflumizone
139968-49-3
604-167-6
LLE - LC-MS-MS or SPE – LC-MS-MS
65
Amoxicillin
26787-78-0
248-003-8
SPE - LC-MS-MS
78
Ciprofloxacin
85721-33-1
617-751-0
SPE - LC-MS-MS
89

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Source: https://www.legislation.gov.uk/eudn/2018/840/annex (the official version)
Page: https://openlegislation.uk/eu-decision-2018-840/annex
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.