Brennholmen

Site 34197 · Herøy i Nordland municipality · Production area 8, Helgeland til Bodø

Status unknown: not reported in week 39Operated by Kobbvåglaks AS · group unknown

unknownAdult female lice per fishNo count in week 39. Latest: 0.38 in week 26, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

7Weeks above the limit in 2026of 26 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

6Lice treatments in 2026Latest: Mechanical delousing, week 25, 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

21Wellboat visits in 2026by 6 different vessels · latest 14 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

0Escapes reportedNone reportedSince 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	0.26	0.5	Below the limit
2	0.38	0.5	Below the limit
3	0.44	0.5	Near the limit
4	0.95	0.5	Above the limit
5	0.65	0.5	Above the limit
6	0.92	0.5	Above the limit
7	0.87	0.5	Above the limit
8	0.46	0.5	Near the limit
9	0.45	0.5	Near the limit
10	0.45	0.5	Near the limit
11	0.45	0.5	Near the limit
12	0.45	0.5	Near the limit
13	0.42	0.5	Near the limit
14	0.43	0.5	Near the limit
15	0.65	0.5	Above the limit
16	0.31	0.5	Below the limit
17	0.40	0.5	Near the limit
18	0.46	0.5	Near the limit
19	0.44	0.5	Near the limit
20	0.48	0.5	Near the limit
21	0.06	0.2	Below the limit
22	0.07	0.2	Below the limit
23	0.18	0.2	Near the limit
24	0.33	0.2	Above the limit
25	0.13	0.2	Below the limit
26	0.38	0.2	Above the limit
27	unknown	0.5	Reported without a count
28	unknown	0.5	Reported without a count
29	unknown	0.5	Not reported
30	unknown	0.5	Not reported
31	unknown	0.5	Not reported
32	unknown	0.5	Not reported
33	unknown	0.5	Not reported
34	unknown	0.5	Not reported
35	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	unknown	0.5	Not reported
38	unknown	0.5	Not reported
39	unknown	0.5	Not reported

Earlier years

20254 of 30 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	unknown	0.5	Not reported
2	unknown	0.5	Not reported
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
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	0.00	0.2	Below the limit
22	0.00	0.2	Below the limit
23	0.00	0.2	Below the limit
24	0.00	0.2	Below the limit
25	0.00	0.2	Below the limit
26	0.00	0.2	Below the limit
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	0.03	0.5	Below the limit
31	0.03	0.5	Below the limit
32	0.05	0.5	Below the limit
33	0.05	0.5	Below the limit
34	0.05	0.5	Below the limit
35	0.11	0.5	Below the limit
36	0.33	0.5	Below the limit
37	0.81	0.5	Above the limit
38	1.22	0.5	Above the limit
39	1.35	0.5	Above the limit
40	0.17	0.5	Below the limit
41	unknown	0.5	Reported without a count
42	0.22	0.5	Below the limit
43	0.21	0.5	Below the limit
44	0.38	0.5	Below the limit
45	0.47	0.5	Near the limit
46	1.11	0.5	Above the limit
47	0.14	0.5	Below the limit
48	0.24	0.5	Below the limit
49	0.31	0.5	Below the limit
50	0.30	0.5	Below the limit
51	0.23	0.5	Below the limit
52	unknown	0.5	Reported without a count

20243 of 35 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	unknown	0.5	Reported without a count
2	0.20	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.20	0.5	Below the limit
5	unknown	0.5	Reported without a count
6	unknown	0.5	Not reported
7	0.30	0.5	Below the limit
8	0.28	0.5	Below the limit
9	0.34	0.5	Below the limit
10	0.32	0.5	Below the limit
11	0.36	0.5	Below the limit
12	0.40	0.5	Near the limit
13	0.40	0.5	Near the limit
14	0.35	0.5	Below the limit
15	0.35	0.5	Below the limit
16	0.38	0.5	Below the limit
17	0.41	0.5	Near the limit
18	0.38	0.5	Below the limit
19	0.37	0.5	Below the limit
20	0.42	0.5	Near the limit
21	0.10	0.2	Below the limit
22	0.13	0.2	Below the limit
23	unknown	0.2	Not reported
24	0.09	0.2	Below the limit
25	0.19	0.2	Near the limit
26	unknown	0.2	Not reported
27	0.20	0.5	Below the limit
28	0.20	0.5	Below the limit
29	0.29	0.5	Below the limit
30	unknown	0.5	Not reported
31	1.10	0.5	Above the limit
32	1.07	0.5	Above the limit
33	1.23	0.5	Above the limit
34	0.33	0.5	Below the limit
35	0.45	0.5	Near the limit
36	0.48	0.5	Near the limit
37	0.36	0.5	Below the limit
38	0.38	0.5	Below the limit
39	0.30	0.5	Below the limit
40	0.30	0.5	Below the limit
41	0.40	0.5	Near the limit
42	0.45	0.5	Near the limit
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

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	0.39	0.5	Below the limit
41	0.45	0.5	Near the limit
42	0.21	0.5	Below the limit
43	0.25	0.5	Below the limit
44	0.23	0.5	Below the limit
45	0.36	0.5	Below the limit
46	0.36	0.5	Below the limit
47	0.46	0.5	Near the limit
48	0.32	0.5	Below the limit
49	0.23	0.5	Below the limit
50	0.24	0.5	Below the limit
51	0.13	0.5	Below the limit
52	0.17	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 25, 2026
Mechanical delousing2 pens
Week 21, 2026
Mechanical delousingWhole site
Week 16, 2026
Mechanical delousing1 pen
Week 7, 2026
Medicinal bath3 pens · Azamethiphos

Show all 19

Week 5, 2026
Thermal delousing3 pens
Week 4, 2026
Medicinal bath2 pens · Azamethiphos
Week 51, 2025
Thermal delousing4 pens
Week 47, 2025
Mechanical delousingWhole site
Week 40, 2025
Thermal delousingWhole site
Week 38, 2025
Medicinal feed6 pens · Emamectin benzoat
Week 37, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 39, 2024
Mechanical delousingWhole site
Week 37, 2024
Mechanical delousingWhole site
Week 34, 2024
Mechanical delousingWhole site
Week 32, 2024
Thermal delousingWhole site
Week 27, 2024
Mechanical delousingWhole site
Week 21, 2024
Thermal delousingWhole site
Week 48, 2023
Medicinal bath, Thermal delousingWhole site · Azamethiphos
Week 42, 2023
Thermal delousing6 pens

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

No escapes reported from this site since 2006.

Wellboat visits

21 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
14 Jul 2026	Ronja Ocean	Kipholmen	2 h 0 min
05 Jul 2026	Ronja Naeroeysund	Gjerdinga	2 h 11 min
25 Jun 2026	Viknatrans	Seiskjæret	1 h 47 min
24 Jun 2026	Ronja Explorer	Marøya	2 h 49 min
19 Jun 2026	Steinar Olaisen	Skauholmen	6 h 57 min
11 May 2026	Ronja Ocean	Marøya	1 h 55 min
03 May 2026	Ronja Explorer	Marøya	1 h 23 min
02 May 2026	Ronja Explorer	Marøya	2 h 42 min
20 Apr 2026	Ronja Explorer	Kyrøyene	1 h 42 min
19 Apr 2026	Ronja Explorer	Kyrøyene	1 h 54 min
17 Apr 2026	Steinar Olaisen	Skauholmen	4 h 34 min
30 Mar 2026	Ronja Explorer	Kyrøyene	1 h 12 min

Show 28 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
27 Mar 2026	Ronja Explorer	Nye Skorpa	3 h 18 min
13 Feb 2026	Steinar Olaisen	Hestøy	4 h 14 min
13 Feb 2026	Steinar Olaisen	Hestøy	1 h 55 min
12 Feb 2026	Steinar Olaisen	Hestøy	2 h 59 min
12 Feb 2026	Steinar Olaisen	Hestøy	2 h 36 min
29 Jan 2026	Faeroeysund	Bjørnøya	13 h 35 min
22 Jan 2026	Steinar Olaisen	Skauholmen	1 h 18 min
22 Jan 2026	Steinar Olaisen	Skauholmen	1 h 45 min
22 Jan 2026	Steinar Olaisen	Skauholmen	1 h 28 min
21 Dec 2025	Faeroeysund	Ystøya	14 h 36 min
28 Sep 2025	Ro Venture	Nye Skorpa	21 h 52 min
27 May 2025	Viknatrans	Movikodden N	1 h 30 min
09 May 2025	Viknatrans	Movikodden N	59 min
30 Oct 2024	Ronja Naeroeysund	Ternskjæret II	1 h 59 min
25 Oct 2024	Ronja Explorer	Marøya	1 h 51 min
07 Oct 2024	Ronja Naeroeysund	Ternskjæret II	2 h 33 min
08 Aug 2024	Ro Fortune	Korsvika	10 h 31 min
06 Aug 2024	Ronja Ocean	Sørværet	2 h 26 min
05 Aug 2024	Ronja Ocean	Sørværet	2 h 59 min
27 Jul 2024	Ronja Explorer	Marøya	2 h 31 min
25 Jul 2024	Ronja Explorer	Marøya	1 h 56 min
24 Jul 2024	Ronja Explorer	Marøya	1 h 56 min
16 Jun 2024	Ronja Ocean	Bondøya	1 h 40 min
26 May 2024	Ro Venture	Hesteneset	12 h 7 min
25 May 2024	Ro Venture	Hesteneset	13 h 17 min
20 May 2024	Ronja Explorer	Lismåsøy	1 h 34 min
14 May 2024	Aasvaerfjord	Marøya	1 h 18 min
30 Apr 2024	Ronja Ocean	Marøya	2 h 2 min

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

Licences

Site MAB: 2,340 tonnes

Licence	Type	Capacity	Holder
N G 0063	Kommersiell / matfiskSalmon, Rainbow trout, Trout	538 t	Organic Seafarm AS
N G 0064	Kommersiell / matfiskSalmon, Rainbow trout, Trout	538 t	Organic Seafarm AS
N HR 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Kobbvåglaks AS
N HR 0070	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Kobbvåglaks AS
N HR 0075	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,000 t	Kobbvåglaks AS
N L 0069	Kommersiell / matfiskSalmon, Rainbow trout, Trout	780 t	Organic Seafarm AS

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