Is Your Tapwater Kosher? About Copepods in Drinking Water

Is Your Tapwater Kosher? About Copepods in Drinking Water


When it comes to adhering to dietary laws, many people are conscientious about the kosher status of the food they consume. However, what about the water flowing from your tap? Believe it or not, copepods, tiny crustaceans that inhabit freshwater sources, might be present in your drinking water, posing a challenge for those who observe kosher dietary practices. In this blog post, we'll explore what copepods are, why they are not considered kosher, and how the Atla Water System can effectively address this concern by removing organisms and particles larger than 1 micron.

Understanding Copepods

Copepods are small crustaceans that belong to the subclass Copepoda. These minuscule creatures are ubiquitous in freshwater ecosystems, including lakes, ponds, and rivers. Ranging in size from 0.2 to 2 millimeters, copepods are almost invisible to the naked eye. While they play a crucial role in aquatic ecosystems by contributing to nutrient cycling, their presence in drinking water may be undesirable for those who observe kosher dietary laws.

Kosher Concerns

According to kosher dietary laws, the consumption of certain aquatic creatures, including copepods, is prohibited. The reasoning behind this restriction lies in the fact that copepods are not considered fish with fins and scales, which are the requirements for a fish to be deemed kosher. Consequently, any water containing copepods may be considered non-kosher, posing a dilemma for individuals who strive to maintain a strictly kosher lifestyle.

The Atla Water System Solution

The Atla Water System emerges as a promising solution to the copepod conundrum in drinking water. This innovative water purification system employs advanced filtration technology to remove particles and organisms larger than 1 micron in size. Given that copepods are much larger than 1 micron in size, the Atla Water System effectively eliminates these crustaceans, ensuring that the water meets kosher standards.

The system utilizes a multi-stage filtration process to guarantee the removal of impurities such as copepods. The 1-micron filter acts as a barrier, preventing the passage of particles and organisms above this size threshold. As a result, individuals concerned about the kosher status of their drinking water can trust the Atla Water System to provide a reliable and effective solution for copepods in drinking water.

Copepods in New York Tap Water

Copepods are known to be in New York tap water, causing concerns for the state's prominent observant Jewish residents. According to an article in Time, the Jewish community has petitioned without success for the state to filter copepods before they reach residents' homes.


Ensuring the kosher status of not just the food but also the water we consume is a vital consideration for many individuals. Copepods, though tiny, can pose a challenge to those observing kosher dietary laws. The Atla Water System offers a practical and efficient solution by removing particles and organisms larger than 1 micron, including copepods, from drinking water. With advancements in water purification technology, individuals can now enjoy peace of mind, knowing that their tapwater meets the stringent requirements of kosher dietary laws.


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