Plastic water tank: Does the color matter?

Plastic water tanks are primarily made of Polyethylene material sold in an assortment of sizes, shapes and are usually available in a variety of different colors. Colors play a very important part in the tanks you pick, it does matter for first - obviously aesthetic reasons and secondly, for scientific conditions that can differ from one situation to another.

These plastic tanks are made from a mixture of things like the main substance being polyethylene, then pigments and color are added to polyethylene to build the tank from scratch. While deciding the pigments for the mixture we need to be sure that the tank can still hold durability which will not easily fade out due to exposure to heat or rain. It needs to be sturdy enough to stay resilient and strong throughout all seasons and weather conditions. All these points along with the fact that they go through the rob molding process limits the number of colors used for plastic tanks.

These colors include:

Beige – A hue of pale tan color

Misty Green – A tint of the color green

Dark Green – A shade of the color green

Black – Dark Pigment

These color pigments must align with the following points:

  • Must keep color intact at the exposure to high temperature
  • Should not fade if kept outdoors
  • Must be completely leak proof
  • Must not have substandard quality which will degrade the storage material
  • Must not be erosive or have any hard metal
  • Should be budget friendly
  • Should be useful and not just aesthetically pleasing
  • Should have long durability and lifespan
  • Should have eco-friendly implications towards its phase out stage

Color depends in the tank exterior as these pigments absorb sunlight from the atmosphere and this activity leads to the tanks generating heat energy. The darker the color of the tank, the hotter the tank is going to be during peak sunny days. The tanks will get even hotter when there is no water or food storage and it is completely empty. Again, this is situational as these cases are only valid if the tank is placed in an outdoor setting. When the tanks are not exposed to the external environment and kept indoors, then this does not matter to the extent that it does otherwise.

Plastic tanks however durable they might be, they eventually do get worn out irrespective of internal or outdoor storage. This remains inevitable. The main reason for discoloration in plastic tanks is because of a naturally occurring phenomenon known as photo-oxidation. That is why, there are UV light stabilizers that come installed within higher quality plastic tanks that help delay the process of discoloration inhibiting harmful UV sun rays that might damage the color of the tank.

Here’s why Color matters while setting up a plastic storage tank:

1. Building Codes

These are set of guidelines that are laid down for houses or businesses located within an estate space. Building codes are enforced in these settings thus the color of a plastic storage tank can play a significant role in the entire legal code towards a business setup. In India, Building codes for building estates are laid down by the National Building Code of India.

2. Safe Water Usage

The water or other material stored in plastic tanks like food grains, corn or other consumable will have to be absolutely safe to the masses for consumption. For this, the growth of algae due to photosynthesis must be avoided at all cost. A color that has light pigments will be sensitive to UV sun rays exposed to the water and therefore can cause the water to get spoilt and food grains to rot. Both are very harmful for consumption. Therefore, holding the tank indoors becomes a priority as compared to an outdoor setup for a plastic tank storage area.

3. Standardization

Many industrial processing units may have not one but many such storage tanks for numerous production and manufacturing purposes. In such a setup, it must be imperative for safety and uniformity for all tanks to be a particular solid color like all black.

4. Property Value

In a residential or commercial space, there are certain colors that are at play. The blueprint is already drawn and the changes are made accordingly to the painting duties of external walls. So, it would be best to compliment the surroundings by adding a plastic tank with similar pigments of colors. This will help in keeping the property value even and stable.

5. Regulate Temperature

Dark pigment plastic tanks, especially the color black being the darkest of the color wheel side, will quickly get hotter as compared to a lighter pigment. However, in a scenario where the placement of the tank is near a place of extreme weather, it might actually be beneficial as this will provide free warm water. It can then be used for bathing, washing and activities that require warm to lukewarm water. Similarly, a light-colored plastic tank will not get hot as quickly as the dark pigment but might be subject to algae growth due to intense heat and UV rays from the sun hitting the bare surface of the plastic tank with light color. A compromise on a dark shade green can be made in this case.