Steinflesa

Site 30537 · Leka municipality · Production area 7, Nord-Trøndelag med Bindal

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

0.06Adult 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 19 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

5Lice treatments in 2026Latest: Thermal delousing, week 38, 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

8Wellboat visits in 2026by 3 different vessels · latest 14 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, May 2026Since 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	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	0.2	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	0.00	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.00	0.5	Below the limit
24	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.09	0.5	Below the limit
30	0.03	0.5	Below the limit
31	0.02	0.5	Below the limit
32	0.24	0.5	Below the limit
33	0.29	0.5	Below the limit
34	0.02	0.5	Below the limit
35	0.07	0.5	Below the limit
36	0.14	0.5	Below the limit
37	0.31	0.5	Below the limit
38	0.04	0.5	Below the limit
39	0.06	0.5	Below the limit

Earlier years

20250 of 37 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	0.43	0.5	Near the limit
2	0.39	0.5	Below the limit
3	0.37	0.5	Below the limit
4	0.35	0.5	Below the limit
5	0.46	0.5	Near the limit
6	0.47	0.5	Near the limit
7	0.43	0.5	Near the limit
8	0.18	0.5	Below the limit
9	0.24	0.5	Below the limit
10	0.23	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.22	0.5	Below the limit
14	0.27	0.5	Below the limit
15	0.25	0.5	Below the limit
16	0.18	0.2	Near the limit
17	0.09	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.09	0.2	Below the limit
20	0.12	0.2	Below the limit
21	0.11	0.2	Below the limit
22	0.15	0.5	Below the limit
23	0.25	0.5	Below the limit
24	0.29	0.5	Below the limit
25	0.23	0.5	Below the limit
26	0.27	0.5	Below the limit
27	0.27	0.5	Below the limit
28	0.33	0.5	Below the limit
29	0.43	0.5	Near the limit
30	0.13	0.5	Below the limit
31	0.04	0.5	Below the limit
32	0.05	0.5	Below the limit
33	0.10	0.5	Below the limit
34	0.15	0.5	Below the limit
35	0.35	0.5	Below the limit
36	0.43	0.5	Near the limit
37	0.38	0.5	Below the limit
38	unknown	0.5	Reported without a count
39	unknown	0.5	Reported without a count
40	unknown	0.5	Reported without a count
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

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	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	0.2	Not reported
17	unknown	0.2	Not reported
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.00	0.2	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.00	0.5	Below the limit
24	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	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	0.02	0.5	Below the limit
32	0.05	0.5	Below the limit
33	0.05	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.02	0.5	Below the limit
36	0.09	0.5	Below the limit
37	0.23	0.5	Below the limit
38	0.37	0.5	Below the limit
39	0.06	0.5	Below the limit
40	0.06	0.5	Below the limit
41	0.11	0.5	Below the limit
42	0.22	0.5	Below the limit
43	0.22	0.5	Below the limit
44	0.41	0.5	Near the limit
45	0.60	0.5	Above the limit
46	0.43	0.5	Near the limit
47	0.46	0.5	Near the limit
48	0.66	0.5	Above the limit
49	0.63	0.5	Above the limit
50	0.48	0.5	Near the limit
51	0.41	0.5	Near the limit
52	0.38	0.5	Below the limit

20230 of 6 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	0.19	0.5	Below the limit
41	0.15	0.5	Below the limit
42	0.17	0.5	Below the limit
43	0.30	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
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

Treatments

Norwegian Food Safety Authority

Week 38, 2026
Thermal delousingWhole site
Week 33, 2026
Thermal delousingWhole site
Week 29, 2026
Medicinal feed, Thermal delousing5 pens · Emamectin benzoat
Week 28, 2026
Medicinal feedEmamectin benzoat

Show all 17

Week 30, 2025
Mechanical delousing4 pens
Week 25, 2025
Mechanical delousing3 pens
Week 18, 2025
Mechanical delousing2 pens
Week 17, 2025
Mechanical delousing4 pens
Week 8, 2025
Thermal delousing4 pens
Week 7, 2025
Thermal delousing1 pen
Week 50, 2024
Thermal delousing3 pens
Week 39, 2024
Thermal delousingWhole site
Week 33, 2024
Medicinal feed, Thermal delousing3 pens · Emamectin benzoat
Week 30, 2024
Medicinal feed2 pens · Emamectin benzoat
Week 29, 2024
Medicinal feed2 pens · Emamectin benzoat
Week 25, 2024
Medicinal feed8 pens · Emamectin benzoat
Week 24, 2024
Medicinal feed8 pens · Emamectin benzoat

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

29 May 2026
1-10 salmon escapedCause: Usikker i skrivende stund. · Directorate of Fisheries

Wellboat visits

8 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	Ro North	Marøya	42 h 47 min
01 Jun 2026	Ronja Evolution	no other farm	2 h 9 min
30 May 2026	Ronja Evolution	no other farm	3 h 33 min
29 May 2026	Faeroeysund	Kjerkvika	9 h 25 min
28 May 2026	Ronja Evolution	Lønngrunnen	3 h 24 min
27 May 2026	Faeroeysund	Kjerkvika	2 h 34 min
22 May 2026	Ronja Evolution	Lønngrunnen	2 h 57 min
20 May 2026	Ronja Evolution	Lønngrunnen	2 h 38 min
05 Sep 2025	Ronja Boroy	Mefaldskjæret	19 h 7 min
26 Jul 2025	Ronja Heroy	Bjørgan	13 h 40 min
25 Jul 2025	Ronja Heroy	Bjørgan	14 h 7 min
24 Jul 2025	Ronja Heroy	Bjørgan	9 h 0 min

Show 32 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
24 Jul 2025	Ronja Havsoy	Hestøy	2 h 18 min
23 Jul 2025	Ronja Havsoy	Hestøy	2 h 51 min
22 Jul 2025	Ronja Havsoy	Fjellbukt	2 h 45 min
17 Jun 2025	Ronja Heroy	Slokkholmen Ø	34 h 32 min
17 Jun 2025	Ronja Heroy	Slokkholmen Ø	1 h 22 min
29 Apr 2025	Ronja Heroy	Ramnøya N	19 h 21 min
24 Apr 2025	Ronja Heroy	Jakobsteinsvika	1 h 18 min
23 Apr 2025	Ronja Heroy	Jakobsteinsvika	16 h 51 min
23 Apr 2025	Ronja Heroy	Jakobsteinsvika	1 h 3 min
22 Feb 2025	Ro North	Bjørgan	8 h 17 min
21 Feb 2025	Ro North	Bjørgan	8 h 34 min
20 Feb 2025	Ro North	Bjørgan	23 h 49 min
18 Feb 2025	Ro North	Bjørgan	23 h 59 min
18 Feb 2025	Ro North	Bjørgan	10 h 34 min
17 Feb 2025	Ro North	Bjørgan	10 h 27 min
17 Feb 2025	Ro North	Bjørgan	1 h 30 min
16 Feb 2025	Ro North	Bjørgan	12 h 20 min
06 Jan 2025	Ronja Naeroeysund	Slokkholmen Ø	7 h 54 min
05 Jan 2025	Froy Jarl	Hestøy	4 h 31 min
23 Dec 2024	Ronja Naeroeysund	Smineset N	13 h 21 min
21 Dec 2024	Ronja Naeroeysund	Smineset N	7 h 45 min
14 Dec 2024	Ronja Ocean	Marøya	7 h 45 min
13 Dec 2024	Ro North	Slokkholmen Ø	40 h 51 min
24 Sep 2024	Ro North	Slokkholmen Ø	31 h 12 min
23 Sep 2024	Ro North	Slokkholmen Ø	22 h 30 min
17 Aug 2024	Ro North	Slokkholmen Ø	11 h 29 min
08 Jun 2024	Ro Master	Slokkholmen Ø	2 h 10 min
11 May 2024	Ronja Havsoy	no other farm	3 h 31 min
10 May 2024	Ronja Havsoy	Breivika S	4 h 2 min
09 May 2024	Ronja Havsoy	Breivika S	7 h 20 min
01 May 2024	Ronja Havsoy	Breivika S	2 h 43 min
29 Apr 2024	Ronja Havsoy	Breivika S	2 h 39 min

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

Licences

Site MAB: 7,020 tonnes

Licence	Type	Capacity	Holder
NT LA 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT LA 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT LA 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT LA 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT LA 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT NR 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT NR 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT NR 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT NR 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
NT NR 0040	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS

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