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The Salmon Ledger
NOEN

Voldnes

Site 13246 · Herøy i Møre og Romsdal municipality · Production area 5, Stadt til Hustadvika

Below the lice limit, week 39Operated by Mowi Seawater Norway AS
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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 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
12Lice treatments in 2026Latest: Mechanical delousing, week 34, 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
30Wellboat visits in 2026by 5 different vessels · latest 20 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
1Escapes reported2,100 salmon, September 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 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
WeekAdult female lice per fishLice limitStatus
10.000.5Below the limit
20.020.5Below the limit
30.020.5Below the limit
40.030.5Below the limit
50.040.5Below the limit
60.070.5Below the limit
70.160.5Below the limit
80.140.5Below the limit
90.170.5Below the limit
100.310.5Below the limit
110.020.5Below the limit
120.010.5Below the limit
130.020.5Below the limit
140.010.5Below the limit
150.030.5Below the limit
160.030.2Below the limit
170.030.2Below the limit
180.050.2Below the limit
190.040.2Below the limit
200.070.2Below the limit
210.070.2Below the limit
220.150.5Below the limit
230.190.5Below the limit
240.040.5Below the limit
250.080.5Below the limit
260.230.5Below the limit
270.040.5Below the limit
280.010.5Below the limit
290.080.5Below the limit
300.160.5Below the limit
310.480.5Near the limit
320.230.5Below the limit
330.260.5Below the limit
340.080.5Below the limit
350.090.5Below the limit
360.170.5Below the limit
370.230.5Below the limit
380.400.5Near the limit
390.000.5Below the limit

Earlier years

20250 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
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
10.290.5Below the limit
20.470.5Near the limit
30.370.5Below the limit
40.110.5Below the limit
50.090.5Below the limit
60.090.5Below the limit
70.080.5Below the limit
80.140.5Below the limit
90.160.5Below the limit
100.180.5Below the limit
110.200.5Below the limit
120.330.5Below the limit
130.080.5Below the limit
140.060.5Below the limit
150.090.5Below the limit
160.110.2Below the limit
170.090.2Below the limit
180.140.2Below the limit
190.080.2Below the limit
200.040.2Below the limit
210.040.2Below the limit
220.040.5Below the limit
230.130.5Below the limit
240.400.5Near the limit
250.090.5Below the limit
260.140.5Below the limit
270.240.5Below the limit
280.360.5Below the limit
290.430.5Near the limit
30unknown0.5Not reported
31unknown0.5Not reported
32unknown0.5Not reported
33unknown0.5Not reported
34unknown0.5Not reported
35unknown0.5Not reported
36unknown0.5Not reported
37unknown0.5Not reported
38unknown0.5Not reported
39unknown0.5Not reported
40unknown0.5Not reported
41unknown0.5Not reported
42unknown0.5Not reported
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
470.000.5Below the limit
480.000.5Below the limit
490.000.5Below the limit
500.000.5Below the limit
510.000.5Below the limit
520.000.5Below the limit
20240 of 36 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
WeekAdult female lice per fishLice limitStatus
1unknown0.5Reported without a count
2unknown0.5Reported without a count
3unknown0.5Not reported
4unknown0.5Not reported
5unknown0.5Not reported
6unknown0.5Not reported
7unknown0.5Not reported
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
14unknown0.5Not reported
15unknown0.5Not reported
16unknown0.2Reported without a count
170.000.2Below the limit
180.000.2Below the limit
190.000.2Below the limit
200.000.2Below the limit
210.000.2Below the limit
220.000.5Below the limit
230.000.5Below the limit
240.000.5Below the limit
250.050.5Below the limit
260.040.5Below the limit
270.020.5Below the limit
280.080.5Below the limit
290.140.5Below the limit
300.190.5Below the limit
310.040.5Below the limit
320.060.5Below the limit
330.070.5Below the limit
340.140.5Below the limit
350.040.5Below the limit
360.040.5Below the limit
370.070.5Below the limit
380.210.5Below the limit
390.160.5Below the limit
400.220.5Below the limit
410.320.5Below the limit
420.430.5Near the limit
430.440.5Near the limit
440.420.5Near the limit
450.440.5Near the limit
460.170.5Below the limit
470.320.5Below the limit
480.310.5Below the limit
490.410.5Near the limit
500.060.5Below the limit
510.190.5Below the limit
520.200.5Below the limit
20230 of 14 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
WeekAdult female lice per fishLice limitStatus
390.130.5Below the limit
400.170.5Below the limit
410.480.5Near the limit
420.230.5Below the limit
430.220.5Below the limit
440.180.5Below the limit
450.080.5Below the limit
460.090.5Below the limit
470.120.5Below the limit
480.130.5Below the limit
490.170.5Below the limit
500.180.5Below the limit
510.230.5Below the limit
520.370.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 34, 2026
    Thermal delousing, Mechanical delousing8 pens
  • Week 32, 2026
    Mechanical delousingWhole site
  • Week 28, 2026
    Thermal delousing1 pen
  • Week 27, 2026
    Thermal delousing8 pens
Show all 27
  • Week 24, 2026
    Mechanical delousingWhole site
  • Week 11, 2026
    Thermal delousingWhole site
  • Week 3, 2026
    Medicinal feed9 pens · Emamectin benzoat
  • Week 2, 2026
    Medicinal feed9 pens · Emamectin benzoat
  • Week 25, 2025
    Mechanical delousing7 pens
  • Week 20, 2025
    Thermal delousing1 pen
  • Week 19, 2025
    Thermal delousing3 pens
  • Week 13, 2025
    Mechanical delousingWhole site
  • Week 4, 2025
    Thermal delousing2 pens
  • Week 3, 2025
    Thermal delousing5 pens
  • Week 50, 2024
    Mechanical delousingWhole site
  • Week 46, 2024
    Thermal delousing5 pens
  • Week 45, 2024
    Thermal delousing3 pens
  • Week 44, 2024
    Mechanical delousing1 pen
  • Week 43, 2024
    Mechanical delousing, Thermal delousing4 pens
  • Week 42, 2024
    Thermal delousing3 pens
  • Week 40, 2024
    Thermal delousing, Freshwater treatment2 pens
  • Week 39, 2024
    Freshwater treatment, Mechanical delousing4 pens
  • Week 38, 2024
    Mechanical delousing2 pens
  • Week 35, 2024
    Thermal delousing3 pens
  • Week 31, 2024
    Thermal delousing2 pens
  • Week 44, 2023
    Mechanical delousingWhole site
  • Week 41, 2023
    Mechanical delousingWhole site

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 Sep 2019
    2,100 salmon escapedCause: Usikker på nåverende tidspunkt · recaptured 1 · Directorate of Fisheries

Wellboat visits

30 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.

ArrivalVesselPrevious farm (14 days)Duration
20 Aug 2026Froy JarlLøypingneset disease or zone there12 h 18 min
19 Aug 2026Froy JarlLøypingneset disease or zone there12 h 20 min
16 Aug 2026FreyjaEggesbønes1 h 38 min
16 Aug 2026FreyjaEggesbønes3 h 1 min
08 Aug 2026Ronja MistralGulestø7 h 9 min
07 Aug 2026Ronja MistralGulestø19 h 54 min
06 Aug 2026Ronja MistralGulestø13 h 51 min
05 Aug 2026FreyjaEggesbønes2 h 11 min
05 Aug 2026Ronja MistralGulestø29 h 56 min
03 Aug 2026Ronja MistralGulestø26 h 7 min
16 Jul 2026Ro FjordEggesbønes4 h 3 min
06 Jul 2026Froy JarlØklandsvågen7 h 35 min
Show 77 older visits
ArrivalVesselPrevious farm (14 days)Duration
05 Jul 2026Ro WestBrudevika20 h 33 min
05 Jul 2026Froy JarlØklandsvågen21 h 10 min
04 Jul 2026Ro WestBrudevika20 h 0 min
04 Jul 2026Froy JarlØklandsvågen14 h 57 min
03 Jul 2026Froy JarlØklandsvågen9 h 53 min
03 Jul 2026Ro WestBrudevika22 h 43 min
02 Jul 2026Froy JarlØklandsvågen22 h 39 min
01 Jul 2026Ro WestBrudevika18 h 52 min
30 Jun 2026Ro WestBrudevika14 h 27 min
29 Jun 2026Ro WestBrudevika11 h 37 min
13 Jun 2026Ronja MistralBeitveit30 h 26 min
12 Jun 2026Ronja MistralBeitveit21 h 47 min
11 Jun 2026Ronja MistralBeitveit12 h 35 min
11 Mar 2026Froy JarlTeigland I18 h 55 min
11 Mar 2026Ro WestBeitveit27 h 14 min
10 Mar 2026Froy JarlTeigland I19 h 0 min
09 Mar 2026Ro WestBeitveit30 h 53 min
09 Mar 2026Froy JarlTeigland I14 h 36 min
01 Dec 2025Ronja EvolutionLøypingneset1 h 25 min
30 Nov 2025Ronja EvolutionLøypingneset3 h 10 min
27 Nov 2025Ronja EvolutionLøypingneset2 h 39 min
16 Nov 2025Ronja EvolutionSyltøy3 h 40 min
14 Nov 2025Ronja EvolutionSyltøy2 h 30 min
13 Nov 2025Ronja EvolutionSyltøy2 h 26 min
31 Jul 2025Ro FjordEggesbønes1 h 28 min
31 Jul 2025Ro FjordEggesbønes3 h 52 min
30 Jul 2025Norwegian Gannetno other farm13 h 48 min
29 Jul 2025Ro FjordEggesbønes1 h 24 min
21 Jul 2025Ro FjordEggesbønes4 h 17 min
17 Jul 2025Ro FjordBjørlykkestranda3 h 49 min
08 Jul 2025Ro FjordSkipperdalsneset3 h 23 min
19 Jun 2025Ronja MistralVoravika11 h 2 min
18 May 2025Froy SagaEggesbønes2 h 13 min
18 May 2025Froy Sagano other farm4 h 22 min
11 May 2025Ronja BoroyKjeahola21 h 8 min
10 May 2025Ronja BoroyKjeahola14 h 30 min
11 Mar 2025Ro FjordEggesbønes1 h 2 min
11 Mar 2025Ro FjordEggesbønes2 h 51 min
21 Jan 2025Ro FjordEggesbønes2 h 18 min
21 Jan 2025Ro VentureOpshaugvik Land19 h 40 min
20 Jan 2025Ro VentureOpshaugvik Land9 h 42 min
19 Jan 2025Ro VentureOpshaugvik Land2 h 46 min
18 Jan 2025Ro VentureOpshaugvik Land19 h 9 min
17 Jan 2025Ro VentureSagelva16 h 38 min
15 Nov 2024Ro WestSagelva11 h 33 min
14 Nov 2024Ro WestSagelva2 h 0 min
14 Nov 2024Ro WestSagelva9 h 40 min
13 Nov 2024Ro WestSagelva11 h 19 min
12 Nov 2024Ro WestSagelva20 h 33 min
11 Nov 2024Ro WestSagelva11 h 5 min
10 Nov 2024Ro WestSagelva11 h 20 min
08 Nov 2024Ro WestSagelva23 h 22 min
08 Nov 2024Ro WestSagelva10 h 10 min
07 Nov 2024Ro WestSagelva2 h 50 min
20 Oct 2024Ro WestHolmskallen30 h 51 min
05 Oct 2024Ro WestKråknes9 h 31 min
02 Oct 2024Ronja SkilsoyOpshaugvik Land16 h 38 min
01 Oct 2024Ronja SkilsoyOpshaugvik Land11 h 16 min
30 Sep 2024Ronja SkilsoyOpshaugvik Land4 h 4 min
29 Sep 2024Ronja SkilsoyOpshaugvik Land20 h 38 min
28 Sep 2024Ronja SkilsoyOpshaugvik Land3 h 56 min
25 Sep 2024Ronja SkilsoyOpshaugvik Land14 h 39 min
24 Sep 2024Ronja SkilsoyGulestø12 h 4 min
23 Sep 2024Ronja SkilsoyGulestø4 h 18 min
22 Sep 2024Ronja SkilsoyGulestø5 h 22 min
22 Sep 2024Ronja SkilsoyGulestø2 h 18 min
21 Sep 2024Ronja SkilsoyGulestø16 h 5 min
20 Sep 2024Ronja SkilsoyGulestø3 h 27 min
31 Aug 2024Ronja BoroyBjørlykkestranda29 h 32 min
31 Jul 2024FreyjaLønngrunnen4 h 56 min
20 Jun 2024Ronja EvolutionBjørlykkestranda2 h 9 min
20 Jun 2024Ronja EvolutionBjørlykkestranda37 min
19 Jun 2024Ronja EvolutionBjørlykkestranda1 h 32 min
19 Jun 2024Ronja EvolutionBjørlykkestranda3 h 5 min
18 Jun 2024Ronja EvolutionBjørlykkestranda3 h 23 min
15 Apr 2024Ronja MaloyVindsvik7 h 31 min
08 Jan 2024Ro FjordEggesbønes2 h 27 min

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

Licences

Site MAB: 5,460 tonnes
LicenceTypeCapacityHolder
M HØ 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M HØ 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M HØ 0005Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M SM 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M VA 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M VD 0016Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS
M VN 0013Kommersiell / matfiskSalmon, Rainbow trout, Trout733 tMowi Seawater Norway AS

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