Water Usage in Breweries
Water is one of the most important raw materials used in beer brewing. Here’s a fun fact: most beers contain close to 92-97% of water.
Breweries usually procure their water supply from the Municipal Corporation water distribution system, post which, they then treat it using different methods. Interestingly, the quality of the beer you drink is directly proportional to the quality of the water used in brewing that beer!
So what do breweries need water for? Here’s a list:
- Brewing water/Brewing Liquor (2.7hl/hl of Beer)
Brewing water requires a certain amount of treatment and adjustments to achieve the correct composition relevant to the beers being brewed.
- Process Water (2.1hl/hl)
This is the water that’s required for washing and sterilizing vessels, pipes, CIPs and refrigeration ((Water + Glycol).
- General purpose water (1hl/hl)
This is for general washing and maintaining the overall hygiene of the site.
- Service Water (0.2hl/hl)
This water is required for the boiler feed and needs to be demineralized before use.
Brewing Water Parameters (Chemical, Sensory and Microbial) are the same as those of drinking water.
Here’s the complete list of desirable parameters below:
|Colour, Haze Unit||Less than 2|
|Turbidity||less than2 NTU|
|TDS||Less than 500 mg/Lt.|
|Nitrate||Less than 45mg/Lt.|
|Sulphide||Less than 0.05mg/Lt.|
|Manganese||Less than 0.1mg/Lt.|
|Copper||Less than 0.05mg/Lt.|
|Zinc||Less than 5mg/Lt.|
|Fluoride||Less than 1mg/Lt.|
|Barium||Less than 1mg/Lt.|
|Antimony||Less than 0.005mg/Lt.|
|Nickel||Less than 0.02mg/Lt.|
|Borate||Less than 5mg/Lt.|
|Silver||Less than 0.01mg/Lt.|
|Chlorides||Less than 200mg/Lt.|
|Megnesium||Less than 30mg/Lt.|
|Calcium||Less than 75mg/Lt.|
|Sodium||Less than 200mg/Lt.|
|Alkalinity (HCO3)||Less than 200mg/Lt.|
|Arsenic||Less than 0.05mg/Lt.|
|Lead||Less than 0.01mg/Lt.|
|Selenium||Less than 0.01mg/Lt.|
|Iron||Less than 0.1mg/Lt.|
|Aluminium||Less than 0.03mg/Lt.|
|Total Pesticide residue||Less than 0.0001mg/Lt.|