Filter Media. Nozzles. Water Treatment Supplies. Delivered Across India.
Since 1986, Bluestone Supply Agency has supplied filter media, nozzles & strainers, treatment consumables and industrial minerals to water treatment plants, power stations, refineries and OEMs — including NTPC, Tata Steel, L&T and Thermax.
- Established 1986
- Pan-India delivery
- Trusted by major PSUs & OEMs
Looking for a water treatment product?
Send your requirement — get availability and pricing.
Product categories
A focused range for water treatment plants, filtration systems and industry — supplied in project and maintenance quantities.
Filter Media
Sand, gravel, anthracite, activated carbon and speciality media for pressure and gravity filters.
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Nozzles & Strainers
Filter nozzles, strainers and underdrain internals in a wide range of sizes and designs.
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Industrial & Foundry Minerals
Silica sand, limestone, iron ore and allied minerals for foundries and industry.
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Water Treatment Plants
Supply support for water treatment plant packages and components.
View rangeWater Treatment Chemicals
Chemical supplies for water and effluent treatment — send us your requirement.
View rangeFull Catalogue
Browse and search every product we list, with filters by category.
Browse catalogueA supplier plants keep coming back to
Companies we have supplied
Our materials have been accepted by some of India's most demanding industrial buyers.
Solutions by treatment problem
Tell us the problem — turbidity, chlorine, iron, hardness, broken internals — and we supply the media and components that fix it.
Media Filtration
Complete media sets for pressure sand filters, multi-grade and dual-media filters.
Learn moreActivated Carbon Treatment
Granular activated carbon for dechlorination, odour and organics removal.
Learn moreIron & Manganese Removal
Greensand and manganese dioxide media for groundwater treatment.
Learn moreSoftening & Demineralisation
Ion exchange resins for softeners, DM plants and mixed beds.
Learn moreRO Plant Pre-treatment
Media, carbon and consumables that protect reverse osmosis membranes.
Learn moreFilter Underdrains & Nozzle Systems
Filter nozzles, strainers and laterals for filter and softener internals.
Learn moreBuilt for procurement teams
Nearly four decades in the trade
Established 1986 — two generations of the same family have supplied India's water treatment industry without interruption.
Accepted by demanding buyers
Our materials have gone into plants run by NTPC, Tata Steel, IOCL, BHEL and India's leading water treatment OEMs.
Complete sets, one order
Pebbles to anthracite, nozzles to laterals — consolidated supply against your filter specification, avoiding mismatched part-shipments.
Pan-India delivery
Material delivered to plants and project sites across India at reasonable, competitive prices.
Technical guides for plant teams
How to Select Filter Media for a Multi-Grade Filter
A practical guide to choosing sand, anthracite, gravel and pebbles for multi-grade and dual-media filters — layer by layer.
Read guideFilter Nozzle Selection Guide for Water Treatment Underdrains
How to choose and replace filter nozzles and strainers — slot size, thread, design types and what to check before ordering.
Read guideActivated Carbon vs Anthracite: Which Does Your Filter Need?
Two black filter media with completely different jobs — how to tell which one your treatment problem actually calls for.
Read guideCommon questions
What does Bluestone Supply Agency supply?
Filter media (sand, gravel, pebbles, anthracite, activated carbon and speciality media), filter nozzles and strainers, ion exchange resins, water treatment consumables, and industrial and foundry minerals such as silica sand, limestone and iron ore.
Do you deliver outside Kolkata?
Yes. We supply material across India to plants, project sites and OEM works. Tell us your delivery location when you enquire.
Can you supply against a filter media specification?
Yes — share the designer’s media schedule or the original specification and we will quote for the complete graded set.
How do I get pricing?
Use the Request a Quote form, WhatsApp us, or call our sales team. Share the product, quantity and delivery location for the fastest response.
Send your requirement today
Product, quantity, delivery location — that's all we need to get you a quote.