Understand what a TDS reading can and cannot tell you, then choose treatment from a proper water test, source and purifier certification.
Quick answer
TDS measures the total dissolved ionic material in water; it does not identify specific contaminants or prove microbiological safety. Do not choose RO, UV or UF from one TDS number alone. Test the actual source for relevant chemical and microbial risks, then select a certified treatment process and maintenance plan based on those results.
Decision summary
What to compare before buying
Use TDS as one screening clue
A handheld meter estimates conductivity and converts it to a TDS value. It cannot distinguish desirable minerals from harmful dissolved substances, and it cannot detect every chemical, particle or microorganism. Two water sources with the same reading can require different treatment. Record seasonal source changes because tanker, borewell and municipal supply may vary.
Choose technology from the risk
Sediment filters address particles, activated carbon can reduce certain tastes and compounds, UV targets susceptible microorganisms under suitable clarity and dose, UF provides a membrane barrier for its rated size range, and RO reduces many dissolved ions but produces reject water. Systems combine stages differently. Laboratory results and certified performance should decide the configuration.
Plan maintenance before installation
A purifier that is not serviced correctly can lose performance. Ask for filter and membrane replacement criteria, sanitisation procedure, storage-tank care, service cost and how performance is verified. Ensure inlet pressure, drain and electrical requirements fit the home. If RO is selected, plan responsible reject-water collection where practical without cross-connection or hygiene risk.
Pondicherry buyer checklist
Complete these checks before you pay
- Measure twice: record the product space, doorway, staircase or lift, ventilation, door swing and connection points.
- Compare exact models: check capacity, current energy information, included accessories, warranty and model number.
- Clarify installation: ask what standard installation includes and list any pipes, brackets, wiring or plumbing charged separately.
- Protect the paperwork: keep the tax invoice, serial number, delivery note, warranty registration and installation record.
- Plan maintenance: follow cleaning and service intervals in the manual and use authorised support during warranty.
Local appliance support
How Grass Enterprises helps Pondicherry buyers
Grass Enterprises helps households and businesses compare home appliances and electronics by space, capacity, features and budget. Visit or contact the Mudaliarpet team to discuss currently available products, delivery, installation guidance and after-sales assistance.
Grass Enterprises
No. 187, Poincare Street, TM Nagar, Keerapalayam, Mudaliarpet, Puducherry – 605004
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Frequently asked questions
Verification resources
Sources and current model checks
Product ranges, labels and instructions can change. Use these primary resources together with the exact model label, official manual, warranty card and authorised installation guidance.
