Davatluft

Site 37557 · Alta municipality · Production area 12, Vest-Finnmark

Below the lice limit, week 39Operated by Cermaq Norway Salmon AS · group Cermaq

0.07Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 38 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

9Lice treatments in 2026Latest: Mechanical delousing, week 33, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

13Wellboat visits in 2026by 4 different vessels · latest 12 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported19,824 salmon, February 2021Since 2006 · Directorate of Fisheries · updated 01 Oct 2026

Sea lice against the limit

Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 21–26 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.14	0.5	Below the limit
2	0.16	0.5	Below the limit
3	0.26	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.06	0.5	Below the limit
6	0.03	0.5	Below the limit
7	0.05	0.5	Below the limit
8	0.07	0.5	Below the limit
9	0.06	0.5	Below the limit
10	0.06	0.5	Below the limit
11	0.06	0.5	Below the limit
12	0.02	0.5	Below the limit
13	0.06	0.5	Below the limit
14	0.08	0.5	Below the limit
15	0.03	0.5	Below the limit
16	0.05	0.5	Below the limit
17	0.05	0.5	Below the limit
18	0.05	0.5	Below the limit
19	0.09	0.5	Below the limit
20	0.05	0.5	Below the limit
21	0.04	0.2	Below the limit
22	0.12	0.2	Below the limit
23	0.11	0.2	Below the limit
24	0.07	0.2	Below the limit
25	0.06	0.2	Below the limit
26	0.04	0.2	Below the limit
27	0.06	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.13	0.5	Below the limit
30	0.09	0.5	Below the limit
31	0.11	0.5	Below the limit
32	0.42	0.5	Near the limit
33	unknown	0.5	Reported without a count
34	0.08	0.5	Below the limit
35	0.07	0.5	Below the limit
36	0.14	0.5	Below the limit
37	0.07	0.5	Below the limit
38	0.07	0.5	Below the limit
39	0.07	0.5	Below the limit

Earlier years

20250 of 38 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.19	0.5	Below the limit
2	0.23	0.5	Below the limit
3	0.16	0.5	Below the limit
4	0.16	0.5	Below the limit
5	0.09	0.5	Below the limit
6	0.13	0.5	Below the limit
7	0.33	0.5	Below the limit
8	0.41	0.5	Near the limit
9	0.24	0.5	Below the limit
10	0.38	0.5	Below the limit
11	0.23	0.5	Below the limit
12	0.20	0.5	Below the limit
13	unknown	0.5	Reported without a count
14	unknown	0.5	Reported without a count
15	unknown	0.5	Not reported
16	unknown	0.5	Not reported
17	unknown	0.5	Not reported
18	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	Reported without a count
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.01	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.01	0.5	Below the limit
36	0.04	0.5	Below the limit
37	0.02	0.5	Below the limit
38	0.03	0.5	Below the limit
39	0.03	0.5	Below the limit
40	0.03	0.5	Below the limit
41	0.05	0.5	Below the limit
42	0.07	0.5	Below the limit
43	0.06	0.5	Below the limit
44	0.11	0.5	Below the limit
45	0.13	0.5	Below the limit
46	0.16	0.5	Below the limit
47	0.12	0.5	Below the limit
48	0.18	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.18	0.5	Below the limit
51	0.24	0.5	Below the limit
52	0.23	0.5	Below the limit

20244 of 44 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.17	0.5	Below the limit
2	unknown	0.5	Reported without a count
3	0.18	0.5	Below the limit
4	unknown	0.5	Reported without a count
5	0.15	0.5	Below the limit
6	unknown	0.5	Reported without a count
7	0.17	0.5	Below the limit
8	unknown	0.5	Reported without a count
9	0.23	0.5	Below the limit
10	unknown	0.5	Reported without a count
11	0.14	0.5	Below the limit
12	unknown	0.5	Reported without a count
13	0.23	0.5	Below the limit
14	unknown	0.5	Reported without a count
15	0.27	0.5	Below the limit
16	0.25	0.5	Below the limit
17	0.31	0.5	Below the limit
18	unknown	0.5	Reported without a count
19	0.04	0.5	Below the limit
20	0.06	0.5	Below the limit
21	0.05	0.2	Below the limit
22	0.01	0.2	Below the limit
23	0.02	0.2	Below the limit
24	0.04	0.2	Below the limit
25	0.05	0.2	Below the limit
26	0.01	0.2	Below the limit
27	0.05	0.5	Below the limit
28	0.05	0.5	Below the limit
29	0.04	0.5	Below the limit
30	0.04	0.5	Below the limit
31	0.06	0.5	Below the limit
32	0.07	0.5	Below the limit
33	0.12	0.5	Below the limit
34	0.12	0.5	Below the limit
35	0.31	0.5	Below the limit
36	0.33	0.5	Below the limit
37	0.42	0.5	Near the limit
38	0.45	0.5	Near the limit
39	0.43	0.5	Near the limit
40	0.42	0.5	Near the limit
41	1.77	0.5	Above the limit
42	2.18	0.5	Above the limit
43	2.38	0.5	Above the limit
44	1.85	0.5	Above the limit
45	0.49	0.5	Near the limit
46	0.05	0.5	Below the limit
47	0.13	0.5	Below the limit
48	0.15	0.5	Below the limit
49	0.13	0.5	Below the limit
50	0.04	0.5	Below the limit
51	0.10	0.5	Below the limit
52	0.06	0.5	Below the limit

20230 of 13 weeks with a count above the limit (data from week 40)

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.00	0.5	Below the limit
41	0.01	0.5	Below the limit
42	0.04	0.5	Below the limit
43	0.03	0.5	Below the limit
44	0.03	0.5	Below the limit
45	0.13	0.5	Below the limit
46	0.11	0.5	Below the limit
47	0.15	0.5	Below the limit
48	0.17	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.14	0.5	Below the limit
52	0.16	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 33, 2026
Mechanical delousing8 pens
Week 4, 2026
Mechanical delousing, Freshwater treatment16 pens
Week 46, 2024
Freshwater treatment1 pen
Week 45, 2024
Freshwater treatment3 pens

Show all 8

Week 38, 2024
Mechanical delousing5 pens
Week 19, 2024
Medicinal bath3 pens · Azamethiphos
Week 18, 2024
Medicinal bath7 pens · Azamethiphos
Week 40, 2023
Medicinal feedWhole site · Emamectin benzoat

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

15 Feb 2021
19,824 salmon escapedCause: Store snømengder de siste dagen, samt utstabilt underlag fra tidligere. · recaptured 1 · Directorate of Fisheries

Wellboat visits

13 visits in 2026

Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.

Arrival	Vessel	Previous farm (14 days)	Duration
12 Sep 2026	Ronja Skilsoy	Rypefjord	3 h 21 min
12 Sep 2026	Ronja Skilsoy	Jernøya	2 h 27 min
15 Aug 2026	Steigen	Rypefjord	3 h 0 min
15 Aug 2026	Veidnes	Holmen	38 h 15 min
13 Aug 2026	Veidnes	Holmen	32 h 25 min
11 Aug 2026	Veidnes	Rypefjord	3 h 36 min
22 Jul 2026	Ronja Silver	Holmen	4 h 27 min
02 Jul 2026	Steigen	Ytre Simanes	2 h 17 min
27 Jun 2026	Steigen	Ytre Koven	6 h 35 min
26 Jan 2026	Ronja Silver	Vedbotn	3 h 42 min
25 Jan 2026	Ronja Silver	Vedbotn	18 h 26 min
21 Jan 2026	Ronja Silver	Vedbotn	19 h 21 min

Show 20 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
20 Jan 2026	Ronja Silver	Vedbotn	7 h 51 min
23 Aug 2025	Rohav	Rogndalen	58 min
22 Aug 2025	Rohav	Rogndalen	55 min
19 Aug 2025	Rohav	Rogndalen	1 h 25 min
29 Jun 2025	Reisa	no other farm	2 h 10 min
27 Jun 2025	Reisa	no other farm	3 h 25 min
22 Jun 2025	Reisa	no other farm	3 h 53 min
20 Jun 2025	Reisa	no other farm	1 h 26 min
07 Apr 2025	Ronja Silver	Laholmen	2 h 9 min
01 Apr 2025	Veidnes	Ytre Simanes	2 h 22 min
29 Mar 2025	Veidnes	Skaret	3 h 3 min
27 Mar 2025	Veidnes	Ytre Simanes	6 h 29 min
12 Nov 2024	Ronja Silver	Stangnes	11 h 26 min
11 Nov 2024	Ronja Silver	Stangnes	1 h 42 min
10 Nov 2024	Ronja Silver	Stangnes	15 h 11 min
05 Oct 2024	Ronja Silver	Ytre Simanes	3 h 46 min
19 Sep 2024	Ronja Silver	Vannfjorden	11 h 6 min
18 Sep 2024	Ronja Silver	Vannfjorden	7 h 3 min
17 Sep 2024	Ronja Silver	Vannfjorden	9 h 39 min
16 Sep 2024	Ronja Silver	Vannfjorden	14 h 56 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Cermaq Finnmark Farming AS	Week 40, 2023	Week 17, 2026
Cermaq Norway Salmon AS	Week 18, 2026	Week 39, 2026

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 5,670 tonnes

Licence	Type	Capacity	Holder
F A 0005	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0009	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0032	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0038	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F A 0060	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0018	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0032	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F H 0033	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F HV 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F KD 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0025	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0033	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F L 0034	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	954 t	Cermaq Norway Salmon AS
F NK 0019	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0020	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0022	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0023	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0024	Kommersiell / matfiskSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
F NK 0042	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	974 t	Cermaq Norway Salmon AS
TF LA 0002	Kommersiell / matfisk-grønn aSalmon, Rainbow trout, Trout	945 t	Cermaq Norway Salmon AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026