Sulphur Bacteria At Work
A rotten-egg smell means bacteria breeding in stagnant, oxygen-starved water — common in big or rarely-used tanks.
The smell itself tells you exactly what’s wrong.
A rotten-egg smell means bacteria breeding in stagnant, oxygen-starved water — common in big or rarely-used tanks.
An earthy, pond-like smell points to algae growing on the walls where sunlight leaks through a cracked lid.
A drain or sewage smell can mean contamination from a cracked sump — get it inspected before you drink.
A bleach smell after a fresh DJB supply is normal and clears if water stands 20–30 minutes.
A disinfecting drain-and-scrub plus a sealed opaque lid and good turnover stops the smell coming back.
Food-grade process, before/after photos and a service record. Same-day where possible across Delhi.