Lake Albert Water Quality
Most recent samples recorded on: 11th December 2017
Blue Green Algae
Blue Green Algae readings and what they mean
|No Alert Level Triggered||GREEN LEVEL|
Routine monitoring to measure cyanobacterial levels.
Increased sampling to enable risks to be more accurately assessed
WWCC and health authorities to warn the public that the water body is considered to be unsuitable for water contact activities, such as swimming, bathing, sailing, skiing or other direct water-contact sports.
Interpretation of Cyanobacterial alert levels for recreational water (a)
<500 cells/mL M.aeruginosa
Biovolume <0.04 for the combined total of all cyanobacteria.
500 to <5000 cells/mL M.aeruginosa
Biovolume equivalent of >0.04 to <0.4 mm3/L for the combined total of all cyanobacteria.
5000 to <50,000 cells/mL M.aeruginosa
Biovolume equivalent of 0.4 to 4mm3/L for the combined total of all cyanobacteria where a toxic producer is dominantf in the total biovolume
0.4 to < 10 mm3/L for the combined total of all cyanobacteria where known toxic producers are not present.
Level 1 guidelines
10μg/L total microcystins OR
50,000 cells/mL toxic M.aeruginosa or biovolume equivalent of 4mm3L for the combined total of all cyanobacteria where a known toxin producer is dominate* in the total biovolume
10mm3/L for total biovolume of all cyanobacteria material where the known toxins are NOT present.
Health risks = Skin and eye irritation with prolonged contact. Gastrointestinal complaints (eg. vomiting, diarrhoea) from consumption of water. Boiling water does not remove toxins. Fish may be unsafe to eat due to bioaccumulation of toxins.
Livestock including companion animals can be particularly susceptible to toxins produced by algae.
Bacterial content readings and what they mean
|No restrictions of use. Maintain regular monitoring.||Advise against primaryc contact. WWCC to erect signs. Maintain regular monitoring.||Advise against ALL use. WWCC to erect signs. Maintain regular monitoring.|
Interpretation of Faecal Coliform alert levels for recreational water (b)
<150 cfu/100mLd OR
<35 enterococci organisms/100ml
Mediane of last 5 samples 150 - 1,000 cfu/100mLd
35 - <230 enterococci organisms/100ml (Maximum number in any one sample: 60-100 organisms/100mL)
1,000 cfu/100mLd OR
230 enterococci organisms/100ml (Maximum number in any one sample: 450-700 organisms/100mL)
Health risks = Gastrointestinal complaints (e.g. vomiting, diarrhoea) from consumption of water.
a NHMRC (2008) Guidelines for managing risks in recreational water. National Health and Medical Research Council
b ANZECC & ARMCANZ (2000). Australian and New Zealand guidelines for fresh and marine water quality. National Water Quality Management Strategy Paper no. 4. Australian and New Zealand Environment and Conservation Council / Agriculture and Resource Management Council of Australia and New Zealand.
c Primary contact: water used for primary contact activities, such as swimming, bathing or other direct water-contact sports.
d cfu/100mL = colony forming units per 100mL
e Median = The middle number
f Dominate = the species of interest (i.e. known toxic producer) comprises 75% or more of the total biovolume