Almurden

Site 13271 · Flatanger municipality · Production area 7, Nord-Trøndelag med Bindal

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi

0.00Adult 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 6 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

0Lice treatments in 2026None recorded2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

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

3Wellboat visits in 2026by 1 vessel · latest 10 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

Show as table

Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.27	0.5	Below the limit
2	0.42	0.5	Near the limit
3	0.42	0.5	Near the limit
4	unknown	0.5	Reported without a count
5	unknown	0.5	Reported without a count
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	0.2	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	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit

Earlier years

20252 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

Show as table

Adult female lice per fish per week, 2025
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	0.02	0.5	Below the limit
8	0.02	0.5	Below the limit
9	0.01	0.5	Below the limit
10	0.01	0.5	Below the limit
11	0.03	0.5	Below the limit
12	0.04	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.07	0.5	Below the limit
15	0.16	0.5	Below the limit
16	0.14	0.2	Below the limit
17	0.12	0.2	Below the limit
18	0.07	0.2	Below the limit
19	0.07	0.2	Below the limit
20	0.10	0.2	Below the limit
21	0.08	0.2	Below the limit
22	0.10	0.5	Below the limit
23	0.05	0.5	Below the limit
24	0.09	0.5	Below the limit
25	0.12	0.5	Below the limit
26	0.18	0.5	Below the limit
27	0.09	0.5	Below the limit
28	0.19	0.5	Below the limit
29	0.07	0.5	Below the limit
30	0.10	0.5	Below the limit
31	0.26	0.5	Below the limit
32	0.47	0.5	Near the limit
33	0.40	0.5	Near the limit
34	0.48	0.5	Near the limit
35	0.35	0.5	Below the limit
36	1.60	0.5	Above the limit
37	0.32	0.5	Below the limit
38	0.71	0.5	Above the limit
39	0.18	0.5	Below the limit
40	0.48	0.5	Near the limit
41	0.41	0.5	Near the limit
42	0.42	0.5	Near the limit
43	0.26	0.5	Below the limit
44	0.17	0.5	Below the limit
45	0.47	0.5	Near the limit
46	0.15	0.5	Below the limit
47	0.23	0.5	Below the limit
48	0.26	0.5	Below the limit
49	0.29	0.5	Below the limit
50	0.37	0.5	Below the limit
51	0.27	0.5	Below the limit
52	0.32	0.5	Below the limit

20240 of 11 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

Show as table

Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.23	0.5	Below the limit
2	0.24	0.5	Below the limit
3	0.32	0.5	Below the limit
4	0.43	0.5	Near the limit
5	0.43	0.5	Near the limit
6	0.47	0.5	Near the limit
7	unknown	0.5	Reported without a count
8	unknown	0.5	Reported without a count
9	unknown	0.5	Reported without a count
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	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	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

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

Show as table

Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.13	0.5	Below the limit
41	0.16	0.5	Below the limit
42	0.15	0.5	Below the limit
43	0.21	0.5	Below the limit
44	0.43	0.5	Near the limit
45	0.03	0.5	Below the limit
46	0.22	0.5	Below the limit
47	0.21	0.5	Below the limit
48	0.12	0.5	Below the limit
49	0.08	0.5	Below the limit
50	0.11	0.5	Below the limit
51	0.14	0.5	Below the limit
52	0.17	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 51, 2025
Mechanical delousing3 pens
Week 46, 2025
Thermal delousingWhole site
Week 43, 2025
Mechanical delousingWhole site
Week 41, 2025
Mechanical delousing3 pens

Show all 20

Week 40, 2025
Mechanical delousing2 pens
Week 39, 2025
Thermal delousing3 pens
Week 35, 2025
Mechanical delousing4 pens
Week 34, 2025
Mechanical delousing1 pen
Week 33, 2025
Mechanical delousingWhole site
Week 30, 2025
Mechanical delousing1 pen
Week 29, 2025
Mechanical delousing5 pens
Week 27, 2025
Thermal delousing2 pens
Week 26, 2025
Mechanical delousing3 pens
Week 11, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 10, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 48, 2023
Thermal delousingWhole site
Week 45, 2023
Mechanical delousing3 pens
Week 44, 2023
Mechanical delousing1 pen
Week 42, 2023
Mechanical delousing2 pens
Week 41, 2023
Mechanical delousing2 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

3 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
10 Sep 2026	Ronja Havsoy	Torgerhaugen	5 h 16 min
09 Sep 2026	Ronja Havsoy	Torgerhaugen	2 h 19 min
08 Sep 2026	Ronja Havsoy	Torgerhaugen	2 h 9 min
15 Dec 2025	Ronja Heroy	Austvika	23 h 27 min
14 Dec 2025	Ronja Heroy	Austvika	10 h 2 min
12 Nov 2025	Ronja Boroy	Fjellbukt	14 h 35 min
10 Nov 2025	Ronja Boroy	Fjellbukt	3 h 44 min
22 Oct 2025	Ronja Heroy	Bjørgan	30 h 9 min
21 Oct 2025	Ronja Heroy	Bjørgan	3 h 46 min
05 Oct 2025	Ronja Heroy	Slåttvika	31 h 26 min
23 Sep 2025	Ronja Boroy	Brattholmen	15 h 1 min
22 Sep 2025	Ronja Boroy	Brattholmen	8 h 58 min

Show 24 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
20 Sep 2025	Ronja Boroy	Brattholmen	12 h 45 min
09 Sep 2025	Ronja Boroy	Austvika	19 h 53 min
08 Sep 2025	Ronja Boroy	Austvika	3 h 5 min
26 Aug 2025	Ronja Boroy	Austvika	2 h 25 min
24 Aug 2025	Ronja Boroy	Austvika	32 h 8 min
14 Aug 2025	Ronja Heroy	Bjørgan	5 h 2 min
13 Aug 2025	Ronja Heroy	Bjørgan	21 h 44 min
12 Aug 2025	Ronja Heroy	Bjørgan	3 h 9 min
12 Aug 2025	Ronja Heroy	Bjørgan	2 h 50 min
19 Jul 2025	Ronja Heroy	Austvika	36 h 44 min
16 Jul 2025	Ronja Heroy	Klubben	3 h 20 min
03 Jul 2025	Ro North	Bjørgan	14 h 53 min
27 Jun 2025	Ronja Heroy	Sandskjæret	18 h 22 min
23 Nov 2024	Ronja Vita	Eldviktaren	2 h 23 min
22 Nov 2024	Ronja Vita	Eldviktaren	5 h 22 min
21 Nov 2024	Ronja Vita	Eldviktaren	3 h 1 min
19 Nov 2024	Ronja Vita	Eldviktaren	37 min
26 Feb 2024	Ronja Havsoy	Hestøy	4 h 39 min
25 Feb 2024	Ro North	Hestøy	4 h 42 min
07 Feb 2024	Ronja Havsoy	Hestøy	2 h 0 min
07 Feb 2024	Ronja Havsoy	Hestøy	41 min
04 Feb 2024	Norwegian Gannet	Nakkestad	11 h 45 min
28 Jan 2024	Ro Sailor	Hestøy	2 h 24 min
28 Jan 2024	Ronja Heroy	Hestøy	6 h 29 min

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

Licences

Site MAB: 3,900 tonnes

Licence	Type	Capacity	Holder
NT F 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT F 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT F 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT F 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT F 0012	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT F 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS

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