Hallarvik

Site 38777 · Hitra municipality · Production area 6, Nordmøre og Sør-Trøndelag

Near the lice limit, week 39Operated by AS Knutshaugfisk · group unknown

0.45Adult female lice per fishLimit 0.50 · near the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

2Lice treatments in 2026Latest: Mechanical delousing, week 39, 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

4Wellboat visits in 2026by 2 different vessels · latest 02 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 16–21 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	0.06	0.5	Below the limit
2	0.06	0.5	Below the limit
3	0.11	0.5	Below the limit
4	0.02	0.5	Below the limit
5	0.11	0.5	Below the limit
6	0.08	0.5	Below the limit
7	0.01	0.5	Below the limit
8	0.09	0.5	Below the limit
9	0.01	0.5	Below the limit
10	0.07	0.5	Below the limit
11	0.02	0.5	Below the limit
12	0.06	0.5	Below the limit
13	0.02	0.5	Below the limit
14	0.02	0.5	Below the limit
15	0.06	0.5	Below the limit
16	0.04	0.2	Below the limit
17	0.03	0.2	Below the limit
18	0.03	0.2	Below the limit
19	0.01	0.2	Below the limit
20	0.06	0.2	Below the limit
21	0.07	0.2	Below the limit
22	0.06	0.5	Below the limit
23	0.08	0.5	Below the limit
24	0.14	0.5	Below the limit
25	0.18	0.5	Below the limit
26	0.08	0.5	Below the limit
27	0.14	0.5	Below the limit
28	0.10	0.5	Below the limit
29	0.23	0.5	Below the limit
30	0.21	0.5	Below the limit
31	0.41	0.5	Near the limit
32	0.43	0.5	Near the limit
33	0.44	0.5	Near the limit
34	0.34	0.5	Below the limit
35	0.28	0.5	Below the limit
36	0.31	0.5	Below the limit
37	0.48	0.5	Near the limit
38	1.00	0.5	Above the limit
39	0.45	0.5	Near the limit

Earlier years

20250 of 27 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	0.28	0.5	Below the limit
2	0.25	0.5	Below the limit
3	0.22	0.5	Below the limit
4	0.22	0.5	Below the limit
5	0.15	0.5	Below the limit
6	0.26	0.5	Below the limit
7	0.13	0.5	Below the limit
8	0.10	0.5	Below the limit
9	0.10	0.5	Below the limit
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	0.2	Not reported
17	unknown	0.2	Not reported
18	unknown	0.2	Not reported
19	unknown	0.2	Not reported
20	unknown	0.2	Not reported
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	unknown	0.5	Not reported
25	unknown	0.5	Not reported
26	unknown	0.5	Not reported
27	unknown	0.5	Not reported
28	unknown	0.5	Not reported
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	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.05	0.5	Below the limit
38	0.02	0.5	Below the limit
39	0.01	0.5	Below the limit
40	0.01	0.5	Below the limit
41	0.03	0.5	Below the limit
42	0.10	0.5	Below the limit
43	0.08	0.5	Below the limit
44	0.04	0.5	Below the limit
45	0.08	0.5	Below the limit
46	0.01	0.5	Below the limit
47	0.01	0.5	Below the limit
48	0.04	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.13	0.5	Below the limit
52	0.05	0.5	Below the limit

20244 of 52 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	0.26	0.5	Below the limit
2	0.18	0.5	Below the limit
3	0.30	0.5	Below the limit
4	0.12	0.5	Below the limit
5	0.14	0.5	Below the limit
6	0.16	0.5	Below the limit
7	0.11	0.5	Below the limit
8	0.16	0.5	Below the limit
9	0.14	0.5	Below the limit
10	0.16	0.5	Below the limit
11	0.16	0.5	Below the limit
12	0.06	0.5	Below the limit
13	0.06	0.5	Below the limit
14	0.06	0.5	Below the limit
15	0.05	0.5	Below the limit
16	0.06	0.2	Below the limit
17	0.08	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.04	0.2	Below the limit
20	0.09	0.2	Below the limit
21	0.10	0.2	Below the limit
22	0.18	0.5	Below the limit
23	0.37	0.5	Below the limit
24	0.41	0.5	Near the limit
25	0.64	0.5	Above the limit
26	0.31	0.5	Below the limit
27	0.39	0.5	Below the limit
28	0.37	0.5	Below the limit
29	0.43	0.5	Near the limit
30	0.25	0.5	Below the limit
31	0.40	0.5	Near the limit
32	0.93	0.5	Above the limit
33	0.12	0.5	Below the limit
34	0.19	0.5	Below the limit
35	0.40	0.5	Near the limit
36	0.41	0.5	Near the limit
37	0.45	0.5	Near the limit
38	1.16	0.5	Above the limit
39	0.48	0.5	Near the limit
40	0.41	0.5	Near the limit
41	0.45	0.5	Near the limit
42	0.82	0.5	Above the limit
43	0.31	0.5	Below the limit
44	0.35	0.5	Below the limit
45	0.37	0.5	Below the limit
46	0.25	0.5	Below the limit
47	0.35	0.5	Below the limit
48	0.40	0.5	Near the limit
49	0.27	0.5	Below the limit
50	0.21	0.5	Below the limit
51	0.25	0.5	Below the limit
52	0.27	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	0.38	0.5	Below the limit
41	0.10	0.5	Below the limit
42	0.23	0.5	Below the limit
43	0.10	0.5	Below the limit
44	0.09	0.5	Below the limit
45	0.21	0.5	Below the limit
46	0.06	0.5	Below the limit
47	0.04	0.5	Below the limit
48	0.09	0.5	Below the limit
49	0.03	0.5	Below the limit
50	0.06	0.5	Below the limit
51	0.07	0.5	Below the limit
52	0.20	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Mechanical delousing2 pens
Week 38, 2026
Mechanical delousing1 pen
Week 46, 2025
Freshwater treatmentWhole site
Week 43, 2024
Mechanical delousing2 pens

Show all 9

Week 39, 2024
Mechanical delousing2 pens
Week 33, 2024
Thermal delousing5 pens
Week 31, 2024
Mechanical delousing2 pens
Week 30, 2024
Thermal delousing2 pens
Week 26, 2024
Mechanical delousing1 pen

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

4 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
02 Sep 2026	Froy Odin	Nordskag	2 h 25 min
18 Aug 2026	Ro Vision	Ternskjæret II	1 h 21 min
21 Jul 2026	Ro Vision	Singsholmen	5 h 52 min
29 May 2026	Ro Vision	Værøya Ø	6 h 18 min
14 Nov 2025	Ronja Princess	Nordskag	6 h 35 min
13 Nov 2025	Ronja Princess	Nordskag	19 h 21 min
17 Aug 2025	Ronja Aurora	Håbranden	2 h 54 min
19 Mar 2025	Ronja Princess	Nordskag	3 h 26 min
18 Mar 2025	Ronja Princess	Nordskag	3 h 9 min
17 Mar 2025	Ronja Princess	Nordskag	3 h 26 min
19 Feb 2025	Ro Vision	Nordskag	2 h 48 min
18 Feb 2025	Ro Vision	Nordskag	3 h 34 min

Show 15 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
24 Sep 2024	Tonny	Hofsøya	1 h 48 min
28 Aug 2024	Tonny	Kjerstad	44 min
19 Aug 2024	Tonny	Gunnarøya	49 min
15 Aug 2024	Ro Venture	Nye Skorpa disease or zone there	51 min
14 Aug 2024	Ro Venture	Nye Skorpa disease or zone there	17 h 7 min
13 Aug 2024	Ro Venture	Nye Skorpa disease or zone there	6 h 11 min
13 Aug 2024	Tonny	Hendneset	38 min
31 Jul 2024	Kristiansund	Aursøysva	13 h 48 min
20 Jul 2024	Ro Fortune	Bukkholmen S	18 h 59 min
15 Jul 2024	Ronja Princess	Smælingen	3 h 40 min
14 Jul 2024	Ronja Princess	Smælingen	3 h 41 min
24 Jun 2024	Aasvaerfjord	Gjæsingen	12 h 21 min
17 Jun 2024	Froey Viking	Nordskag	1 h 27 min
16 Jun 2024	Froey Viking	Fjølværet Ø disease or zone there	2 h 55 min
23 May 2024	Tonny	Kjørsvikgrunn	32 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
M SM 0037	Kommersiell / matfisk-grønn cSalmon, Rainbow trout, Trout	788 t	Nekton Havbruk AS
ST H 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	AS Knutshaugfisk
ST H 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,106 t	AS Knutshaugfisk
ST H 0055	Kommersiell / matfiskSalmon, Rainbow trout, Trout	792 t	AS Knutshaugfisk
TR H 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	780 t	AS Knutshaugfisk

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