Grøttøy

Site 29096 · Hadsel municipality · Production area 9, Vestfjorden og Vesterålen

Status unknown: not reported in week 39Operated by Nordlaks Havbruk AS

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

unknownAdult female lice per fishNo count in week 39. Latest: 0.05 in week 24, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 22 weeks with a count · broodstock: limit may differCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

2Lice treatments in 2026Latest: Medicinal feed, week 24, 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

6Wellboat visits in 2026by 1 vessel · latest 17 Jun 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, December 2019Since 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	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.00	0.5	Below the limit
8	0.00	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.00	0.5	Below the limit
11	unknown	0.5	Reported without a count
12	0.00	0.5	Below the limit
13	0.03	0.5	Below the limit
14	0.00	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.00	0.5	Below the limit
17	0.00	0.5	Below the limit
18	0.00	0.5	Below the limit
19	0.00	0.5	Below the limit
20	0.01	0.5	Below the limit
21	0.02	0.2	Below the limit
22	0.08	0.2	Below the limit
23	0.08	0.2	Below the limit
24	0.05	0.2	Below the limit
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	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

20250 of 20 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	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	0.22	0.5	Below the limit
20	0.16	0.5	Below the limit
21	0.16	0.2	Below the limit
22	0.08	0.2	Below the limit
23	0.07	0.2	Below the limit
24	0.05	0.2	Below the limit
25	0.02	0.2	Below the limit
26	0.06	0.2	Below the limit
27	0.15	0.5	Below the limit
28	0.12	0.5	Below the limit
29	0.15	0.5	Below the limit
30	0.22	0.5	Below the limit
31	0.24	0.5	Below the limit
32	unknown	0.5	Not reported
33	unknown	0.5	Reported without a count
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
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.00	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

20242 of 17 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	0.28	0.5	Below the limit
2	0.21	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.11	0.5	Below the limit
5	0.13	0.5	Below the limit
6	0.12	0.5	Below the limit
7	unknown	0.5	Reported without a count
8	0.20	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.34	0.5	Below the limit
11	unknown	0.5	Reported without a count
12	0.23	0.5	Below the limit
13	unknown	0.5	Reported without a count
14	0.22	0.5	Below the limit
15	unknown	0.5	Reported without a count
16	0.39	0.5	Below the limit
17	0.26	0.5	Below the limit
18	0.33	0.5	Below the limit
19	0.24	0.5	Below the limit
20	0.16	0.5	Below the limit
21	0.29	0.2	Above the limit
22	0.18	0.2	Near the limit
23	0.21	0.2	Above the limit
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	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
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
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)

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.01	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.01	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.01	0.5	Below the limit
46	0.02	0.5	Below the limit
47	0.06	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.03	0.5	Below the limit
50	0.03	0.5	Below the limit
51	0.02	0.5	Below the limit
52	0.03	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 24, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 23, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 23, 2024
Freshwater treatment3 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

05 Dec 2019
1-10 salmon escapedCause: Vi hadde med elever fra vg 2 Akva på Kleiva som skulle gjennomføre en praktisk oppgave som gikk ut på snittveiing av fisk. Mære 5, under opptak av avkastnota etter veiing datt det en fisk ut av nota på utsiden av merden. På mer 8 falt en fisk ut av handhåven under håving av fisk opp i veiekaret. · Directorate of Fisheries

Wellboat visits

6 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
17 Jun 2026	Bjorg Pauline	Ytre Hadseløya	2 h 46 min
17 Jun 2026	Bjorg Pauline	Ytre Hadseløya	4 h 31 min
17 Jun 2026	Bjorg Pauline	Ytre Hadseløya	4 h 14 min
16 Jun 2026	Bjorg Pauline	Ytre Hadseløya	4 h 24 min
16 Jun 2026	Bjorg Pauline	Ytre Hadseløya	2 h 9 min
16 Jun 2026	Bjorg Pauline	Børøya Slaktemerd	2 h 38 min
15 Nov 2025	Caspian	no other farm	7 h 17 min
14 Nov 2025	Caspian	no other farm	7 h 49 min
10 Nov 2025	Doennland	Enkeltstein	1 h 44 min
19 Aug 2025	Harald Martin	Holmen	1 h 56 min
19 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	2 h 0 min
15 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	3 h 11 min

Show 18 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
15 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	3 h 24 min
14 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	3 h 51 min
13 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	2 h 12 min
13 Aug 2025	Bjorg Pauline	Børøya Slaktemerd	3 h 4 min
05 Aug 2025	Harald Martin	Børøya Slaktemerd	1 h 39 min
03 Aug 2025	Harald Martin	Børøya Slaktemerd	2 h 50 min
30 Jul 2025	Harald Martin	Børøya Slaktemerd	1 h 58 min
28 Jul 2025	Harald Martin	Børøya Slaktemerd	2 h 15 min
03 May 2025	Bjorg Pauline	Raven	59 min
03 May 2025	Harald Martin	Raven	3 h 29 min
03 May 2025	Bjorg Pauline	Raven	2 h 41 min
02 May 2025	Harald Martin	Raven	2 h 34 min
02 May 2025	Bjorg Pauline	Raven	2 h 51 min
13 Jun 2024	Bjorg Pauline	Ytre Hadseløya	6 h 49 min
12 Jun 2024	Bjorg Pauline	Ytre Hadseløya	5 h 17 min
11 Jun 2024	Bjorg Pauline	Ytre Hadseløya	1 h 26 min
10 Jun 2024	Bjorg Pauline	Ytre Hadseløya	4 h 46 min
08 Jun 2024	Bjorg Pauline	Ytre Hadseløya	11 h 7 min

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

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
N H 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,014 t	Nordlaks Havbruk AS
N LN 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	812 t	Nordlaks Havbruk AS
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

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