2015/16 – Kowanyama (Queensland) – Manganese
2015/16 – Kowanyama (Queensland) – Manganese 1.012mg/L (high), av. 0.135mg/L
Manganese: ADWG Guidelines 0.5mg/L. ADWG Aesthetic Guideline 0.1mg/L
Manganese is found in the natural environment. Manganese in drinking water above 0.1mg/L can give water an unpleasant taste and stain plumbing fixtures
8/6/21 – Kowanyama (Queensland) – Fluoride
8/6/21: Kowanyama (Queensland) – Fluoride 1.6mg/L sample from Reservoir. Fluoride levels generally fluctuate around and sometimes exceed the NHMRC guideline of 1.5mg/L
“Fluoride occurs naturally in seawater (1.4 mg/L), soil (up to 300 parts per million) and air (from volcanic gases and industrial pollution). Naturally occurring fluoride concentrations in drinking water depend on the type of soil and rock through which the water drains. Generally, concentrations in surface water are relatively low (<0.1–0.5 mg/L), while water from deeper wells may have quite high concentrations (1–10 mg/L) if the rock formations are fluoride-rich.” 2011 ADWG. Health Guideline: 1.5mg/L