The maximum permissible limit (MPL) for fluoride in drinking water as per BIS (Bureau of Indian Standards) IS 10500:2012 is:

• A 0.5 mg/L
• B 1.0 mg/L
• C 1.5 mg/L ✓
• D 2.0 mg/L

Explanation

BIS standard IS 10500:2012 specifies that the acceptable limit for fluoride in drinking water is 1.0 mg/L, and the permissible limit (in the absence of an alternate source) is 1.5 mg/L. WHO also recommends 1.5 mg/L as the guideline value. Fluoride below 0.5 mg/L causes dental caries; levels above 1.5 mg/L cause dental fluorosis, and above 3–4 mg/L cause skeletal fluorosis.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.