Oltesvik

Site 11908 · Gjesdal municipality · Production area 2, Ryfylke

Status unknown: not reported in week 39Operated by Ewos Innovation AS · group unknown

unknownAdult female lice per fishNo count in week 39. Latest: 0.00 in week 38, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 34 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

1Lice treatments in 2026Latest: Other treatment, week 11, 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 5 different vessels · latest 05 Jun 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

2Escapes reported1 salmon, August 2024Since 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	0.09	0.5	Below the limit
2	0.32	0.5	Below the limit
3	0.32	0.5	Below the limit
4	0.27	0.5	Below the limit
5	0.48	0.5	Near the limit
6	1.06	0.5	Above the limit
7	0.18	0.5	Below the limit
8	0.24	0.5	Below the limit
9	0.40	0.5	Near the limit
10	0.49	0.5	Near the limit
11	0.12	0.5	Below the limit
12	0.11	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.00	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.03	0.2	Below the limit
17	0.02	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.03	0.2	Below the limit
20	0.05	0.2	Below the limit
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	unknown	0.5	Reported without a count
27	0.14	0.5	Below the limit
28	0.14	0.5	Below the limit
29	0.07	0.5	Below the limit
30	0.07	0.5	Below the limit
31	0.05	0.5	Below the limit
32	0.01	0.5	Below the limit
33	0.04	0.5	Below the limit
34	0.02	0.5	Below the limit
35	0.01	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	unknown	0.5	Not reported

Earlier years

20250 of 22 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	0.37	0.5	Below the limit
2	0.42	0.5	Near the limit
3	0.47	0.5	Near the limit
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	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	0.00	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.01	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	unknown	0.5	Not reported
40	0.00	0.5	Below the limit
41	unknown	0.5	Not reported
42	0.00	0.5	Below the limit
43	unknown	0.5	Not reported
44	0.01	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.01	0.5	Below the limit
47	0.02	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.05	0.5	Below the limit
50	0.06	0.5	Below the limit
51	0.05	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	0.02	0.5	Below the limit
2	0.03	0.5	Below the limit
3	0.05	0.5	Below the limit
4	0.04	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.04	0.5	Below the limit
7	0.12	0.5	Below the limit
8	0.15	0.5	Below the limit
9	0.19	0.5	Below the limit
10	0.34	0.5	Below the limit
11	0.39	0.5	Below the limit
12	0.38	0.5	Below the limit
13	0.04	0.5	Below the limit
14	0.08	0.5	Below the limit
15	0.08	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.08	0.2	Below the limit
18	0.06	0.2	Below the limit
19	0.08	0.2	Below the limit
20	0.07	0.2	Below the limit
21	0.14	0.2	Below the limit
22	0.07	0.5	Below the limit
23	0.12	0.5	Below the limit
24	0.18	0.5	Below the limit
25	0.12	0.5	Below the limit
26	0.32	0.5	Below the limit
27	0.23	0.5	Below the limit
28	0.34	0.5	Below the limit
29	0.40	0.5	Near the limit
30	0.41	0.5	Near the limit
31	0.20	0.5	Below the limit
32	0.43	0.5	Near the limit
33	0.73	0.5	Above the limit
34	0.88	0.5	Above the limit
35	0.38	0.5	Below the limit
36	0.48	0.5	Near the limit
37	0.48	0.5	Near the limit
38	0.75	0.5	Above the limit
39	1.20	0.5	Above the limit
40	0.17	0.5	Below the limit
41	0.11	0.5	Below the limit
42	0.09	0.5	Below the limit
43	0.07	0.5	Below the limit
44	0.17	0.5	Below the limit
45	0.13	0.5	Below the limit
46	0.44	0.5	Near the limit
47	0.43	0.5	Near the limit
48	0.43	0.5	Near the limit
49	0.43	0.5	Near the limit
50	0.35	0.5	Below the limit
51	0.47	0.5	Near the limit
52	0.45	0.5	Near the limit

20230 of 4 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	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	0.01	0.5	Below the limit
50	0.01	0.5	Below the limit
51	0.01	0.5	Below the limit
52	0.01	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 11, 2026
Other treatment8 pens · Ferskvann
Week 40, 2024
Freshwater treatmentWhole site
Week 35, 2024
Mechanical delousingWhole site
Week 31, 2024
Thermal delousingWhole site

Show all 5

Week 13, 2024
Medicinal bathWhole site · Salmosan

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

27 Aug 2024
1 salmon escapedCause: Fiskehelsetjeneste talte lakselus på lokaliteten, person fra tjeneste var uheldig og mistet 1 laks på dekket til arbeidsbåten. Fisken sklei videre på dekk og ut gjennom et hull. · recaptured 1 · Directorate of Fisheries
19 Feb 2018
1 salmon escapedCause: Medarbeider glapp/mistet 1 stk fisk på sjøen under lusetelling. Det var en liten glipe mellom topp not og topp rekkverk der sikringsnettet ikke dekket. · Directorate of Fisheries

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
05 Jun 2026	Seifjell	no other farm	11 h 29 min
19 May 2026	Robas	Øklandsvågen	37 min
18 May 2026	Robas	Øklandsvågen	39 min
10 May 2026	Rostein	Kastevika	3 h 4 min
26 Mar 2026	Rostein	Høyvika	2 h 41 min
19 Mar 2026	Rostein	Nesevågen	4 h 3 min
10 Mar 2026	Ronja Azul	Helgøy	14 h 24 min
10 Mar 2026	Ronja Azul	Helgøy	6 h 56 min
09 Mar 2026	Ronja Azul	Helgøy	14 h 10 min
07 Feb 2026	Ro Chief	Kastevika	1 h 55 min
06 Feb 2026	Ro Chief	Kastevika	4 h 2 min
06 Feb 2026	Ro Chief	Kastevika	4 h 15 min

Show 27 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
05 Feb 2026	Ro Chief	Kastevika	4 h 35 min
05 Feb 2026	Ro Chief	Kastevika	4 h 4 min
30 Jul 2025	Rostein	Hesteneset	12 h 31 min
28 Jul 2025	Rostein	Hesteneset	7 h 28 min
05 Feb 2025	Langsund	Bjønnspjotneset	1 h 42 min
31 Jan 2025	Rostein	Hesteneset	2 h 41 min
14 Dec 2024	Rostein	Nesevågen	1 h 36 min
29 Nov 2024	Rostein	Hesteneset	3 h 16 min
13 Nov 2024	Rohav	Nesevågen	3 h 8 min
07 Oct 2024	Ronja Azul	Helgøy	21 h 45 min
05 Oct 2024	Ronja Azul	Oanes Sjø	1 h 55 min
04 Oct 2024	Ronja Azul	Oanes Sjø	15 h 15 min
03 Oct 2024	Ronja Azul	Oanes Sjø	15 h 52 min
28 Sep 2024	Langsund	Porsvika	59 min
25 Sep 2024	Langsund	Hesteneset	1 h 1 min
17 Sep 2024	Langsund	Fusavika	51 min
10 Sep 2024	Langsund	Djupeleget	2 h 47 min
29 Aug 2024	Robris	Skaganeset	1 h 54 min
28 Aug 2024	Robris	Hesteneset	1 h 9 min
23 Mar 2024	Robris	Oddane	1 h 19 min
23 Mar 2024	Robris	Oddane	1 h 13 min
23 Mar 2024	Robris	Oddane	53 min
22 Mar 2024	Robris	Oddane	1 h 29 min
22 Mar 2024	Robris	Oddane	2 h 18 min
22 Mar 2024	Robris	Oddane	3 h 55 min
21 Mar 2024	Robris	Oddane	2 h 17 min
21 Mar 2024	Robris	Oddane	2 h 1 min

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

Licences

Site MAB: 1,400 tonnes

Licence	Type	Capacity	Holder
R G 0010	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Ewos Innovation AS
R G 0013	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Ewos Innovation AS

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