Risvik

Site 21176 · Hamarøy municipality · Production area 9, Vestfjorden og Vesterålen

Below the lice limit, week 39Operated by Nordlaks Havbruk AS · group Nordlaks

Broodstock site: the limit may differ from the general one.

0.31Adult 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 39 weeks with a count · broodstock: limit may differCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

4Lice treatments in 2026Latest: Medicinal bath, week 36, 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

14Wellboat visits in 2026by 2 different vessels · latest 09 Sep 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. Broodstock site: the limit may differ from the general one.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026Broodstock site: the limit may differ from the general one.

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.03	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.03	0.5	Below the limit
7	0.01	0.5	Below the limit
8	0.04	0.5	Below the limit
9	0.04	0.5	Below the limit
10	0.09	0.5	Below the limit
11	0.05	0.5	Below the limit
12	0.01	0.5	Below the limit
13	0.01	0.5	Below the limit
14	0.08	0.5	Below the limit
15	0.06	0.5	Below the limit
16	0.08	0.5	Below the limit
17	0.06	0.5	Below the limit
18	0.05	0.5	Below the limit
19	0.03	0.5	Below the limit
20	0.04	0.5	Below the limit
21	0.03	0.2	Below the limit
22	0.02	0.2	Below the limit
23	0.02	0.2	Below the limit
24	0.02	0.2	Below the limit
25	0.05	0.2	Below the limit
26	0.08	0.2	Below the limit
27	0.13	0.5	Below the limit
28	0.20	0.5	Below the limit
29	0.07	0.5	Below the limit
30	0.12	0.5	Below the limit
31	0.25	0.5	Below the limit
32	0.33	0.5	Below the limit
33	0.15	0.5	Below the limit
34	0.25	0.5	Below the limit
35	0.48	0.5	Near the limit
36	0.41	0.5	Near the limit
37	0.23	0.5	Below the limit
38	0.27	0.5	Below the limit
39	0.31	0.5	Below the limit

Earlier years

20250 of 34 weeks with a count above the limit

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.48	0.5	Near the limit
2	0.44	0.5	Near the limit
3	0.38	0.5	Below the limit
4	0.35	0.5	Below the limit
5	0.33	0.5	Below the limit
6	0.35	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.15	0.5	Below the limit
9	0.25	0.5	Below the limit
10	0.28	0.5	Below the limit
11	0.33	0.5	Below the limit
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	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	Not reported
27	unknown	0.5	Not reported
28	unknown	0.5	Not reported
29	unknown	0.5	Reported without a count
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	0.00	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.02	0.5	Below the limit
40	0.02	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.02	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.03	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

20243 of 45 weeks with a count above the limit

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.01	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.00	0.5	Below the limit
6	unknown	0.5	Reported without a count
7	0.00	0.5	Below the limit
8	unknown	0.5	Reported without a count
9	0.00	0.5	Below the limit
10	unknown	0.5	Reported without a count
11	0.01	0.5	Below the limit
12	unknown	0.5	Reported without a count
13	0.00	0.5	Below the limit
14	unknown	0.5	Reported without a count
15	0.00	0.5	Below the limit
16	unknown	0.5	Reported without a count
17	0.00	0.5	Below the limit
18	unknown	0.5	Reported without a count
19	0.01	0.5	Below the limit
20	0.01	0.5	Below the limit
21	0.01	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	0.01	0.5	Below the limit
28	0.10	0.5	Below the limit
29	0.13	0.5	Below the limit
30	0.11	0.5	Below the limit
31	0.15	0.5	Below the limit
32	0.55	0.5	Above the limit
33	0.25	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.17	0.5	Below the limit
36	0.23	0.5	Below the limit
37	0.01	0.5	Below the limit
38	0.18	0.5	Below the limit
39	0.20	0.5	Below the limit
40	0.33	0.5	Below the limit
41	1.05	0.5	Above the limit
42	1.51	0.5	Above the limit
43	0.27	0.5	Below the limit
44	0.28	0.5	Below the limit
45	0.36	0.5	Below the limit
46	0.28	0.5	Below the limit
47	0.09	0.5	Below the limit
48	0.10	0.5	Below the limit
49	0.11	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.35	0.5	Below the limit
52	0.44	0.5	Near the limit

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

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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	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.01	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.01	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 36, 2026
Medicinal bathAzamethiphos
Week 33, 2026
Mechanical delousing5 pens
Week 32, 2026
Mechanical delousing2 pens
Week 29, 2026
Mechanical delousingWhole site

Show all 13

Week 39, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 38, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 46, 2024
Medicinal bath2 pens · Deltamethrin
Week 43, 2024
Medicinal bath3 pens · Azamethiphos
Week 42, 2024
Medicinal bath1 pen · Azamethiphos
Week 37, 2024
Other treatment4 pens · Ferskvann og thermolicer
Week 34, 2024
Other treatment2 pens · Ferskvann og thermolicer
Week 33, 2024
Other treatment5 pens · Ferskvann og thermolicer
Week 32, 2024
Other treatment2 pens · Ferskvann og thermolicer

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

14 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
09 Sep 2026	Ronja Vita	Børøya Slaktemerd	2 h 51 min
08 Sep 2026	Ronja Vita	Børøya Slaktemerd	3 h 12 min
01 Sep 2026	Bjorg Pauline	Børøya Slaktemerd	2 h 18 min
12 Aug 2026	Bjorg Pauline	Børøya Slaktemerd	1 h 29 min
11 Aug 2026	Bjorg Pauline	Børøya Slaktemerd	8 h 46 min
10 Aug 2026	Bjorg Pauline	Børøya Slaktemerd	16 h 51 min
09 Aug 2026	Bjorg Pauline	Børøya Slaktemerd	6 h 17 min
19 Jul 2026	Bjorg Pauline	Børøya Slaktemerd	7 h 50 min
18 Jul 2026	Bjorg Pauline	Børøya Slaktemerd	17 h 15 min
17 Jul 2026	Bjorg Pauline	Børøya Slaktemerd	14 h 41 min
10 Jun 2026	Bjorg Pauline	Børøya Slaktemerd	11 h 47 min
10 Jun 2026	Bjorg Pauline	Børøya Slaktemerd	4 h 30 min

Show 33 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
04 Jun 2026	Bjorg Pauline	Børøya Slaktemerd	3 h 46 min
04 Jun 2026	Bjorg Pauline	Børøya Slaktemerd	5 h 33 min
18 Jul 2025	Harald Martin	Forsåstorvika	3 h 47 min
17 Jul 2025	Harald Martin	Forsåstorvika	3 h 8 min
28 Mar 2025	Harald Martin	Børøya Slaktemerd	1 h 43 min
23 Mar 2025	Harald Martin	Børøya Slaktemerd	1 h 44 min
19 Mar 2025	Harald Martin	Storfjell	3 h 28 min
01 Mar 2025	Harald Martin	Børøya Slaktemerd	4 h 7 min
09 Feb 2025	Bjorg Pauline	Børøya Slaktemerd	5 h 46 min
05 Feb 2025	Harald Martin	Børøya Slaktemerd	1 h 50 min
19 Jan 2025	Harald Martin	Børøya Slaktemerd	3 h 42 min
05 Jan 2025	Harald Martin	Børøya Slaktemerd	3 h 33 min
23 Oct 2024	Bjorg Pauline	Sandøya	2 h 58 min
22 Oct 2024	Bjorg Pauline	Sandøya	15 h 3 min
21 Oct 2024	Bjorg Pauline	Sandøya	13 h 57 min
21 Oct 2024	Bjorg Pauline	Sandøya	2 h 18 min
20 Oct 2024	Bjorg Pauline	Sandøya	6 h 1 min
20 Oct 2024	Bjorg Pauline	Sandøya	6 h 6 min
19 Oct 2024	Bjorg Pauline	Børøya Slaktemerd	2 h 2 min
15 Sep 2024	Harald Martin	Børøya Slaktemerd disease or zone there	1 h 4 min
14 Sep 2024	Harald Martin	Børøya Slaktemerd disease or zone there	18 h 25 min
13 Sep 2024	Harald Martin	Børøya Slaktemerd disease or zone there	12 h 10 min
11 Sep 2024	Harald Martin	Børøya Slaktemerd disease or zone there	12 h 5 min
20 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	11 h 51 min
19 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	4 h 41 min
18 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	15 h 55 min
16 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	5 h 20 min
16 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	2 h 28 min
15 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	4 h 30 min
12 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	5 h 57 min
12 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	6 h 0 min
10 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	8 h 29 min
09 Aug 2024	Harald Martin	Børøya Slaktemerd disease or zone there	7 h 46 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
Nordlaks Havbruk AS	Week 40, 2023	Week 39, 2026
Nordnorsk Stamfisk AS	Week 43, 2023	Week 43, 2023
Pharmaq AS	Week 44, 2023	Week 23, 2024

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

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
N SG 0037	Kommersiell / stamfiskSalmon	780 t	Nordnorsk Stamfisk AS
N SG 0038	Kommersiell / stamfiskSalmon	780 t	Nordnorsk Stamfisk AS
N SG 0039	Kommersiell / stamfiskSalmon	780 t	Nordnorsk Stamfisk AS
N V 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	812 t	Nordlaks Havbruk AS
N VR 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	812 t	Nordlaks Havbruk AS

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