Total Kjeldahl Nitrogen or TKN is defined as total organic nitrogen and ammonia nitrogen. Nitrogen occurs in wastewater and ground water in several forms, including inorganic forms like nitrate (NO3), nitrite (NO2), and ammonia (NH4), and organic nitrogen where the nitrogen is bound up in compounds with carbon, oxygen and hydrogen. TKN is high in septic waste and manure. Total nitrogen is equal to TKN plus nitrate and nitrite.
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Total Kjeldahl Nitrogen levels were detected in your water sample. There is no health-based standard for Total Kjeldahl Nitrogen. If you have concerns about the levels detected, please consult your physician.