This is dissolved iron oxidising when exposed to air. Borewell water in Assam and NE India commonly has iron levels of 2–5 ppm. When pumped and stored in an overhead tank, the iron meets oxygen and precipitates as yellow-brown rust. An iron removal filter oxidises and traps the iron before it reaches your taps.

Not necessarily. RO is needed when TDS (total dissolved solids) is high — typically above 500–1000 ppm. Many NE India borewells have moderate TDS but high iron. In those cases, an iron removal filter is sufficient and far less expensive to operate than RO. We test your water first and recommend only what is actually needed.

Filter media (sand, activated carbon, manganese greensand) typically lasts 3–5 years depending on water quality and usage. Backwash cycles — which clean the media by reversing water flow — are done daily or as needed. We train your operator on backwash timing and schedule media replacement as part of our maintenance visits.

Yes. We design WTP systems from small community-scale units to large institutional and township installations. The design approach is the same — test the water, size the treatment train for peak demand, and build with materials rated for the load. Larger systems may include multiple filtration stages, automated backwash, and centralised monitoring.

Daily: backwash cycle (15–20 minutes, can be automated). Monthly: check pressure differential across filters, inspect valves and piping. Annually: water quality retest, media condition assessment. We offer O&M contracts that handle all of this — or we train your operator to manage it independently.