Hyderabad & Secunderabad
Free TDS and water quality testing with every RO service visit. Know your inlet and output TDS, verify your purifier's performance, and ensure your water is safe to drink.
A quick guide to understanding TDS readings in your drinking water.
Below optimal — may lack minerals. Check TDS controller setting.
Ideal for drinking water. Most well-functioning RO purifiers produce water in this range.
Acceptable by WHO guidelines. Suitable for drinking.
BIS permits up to 500 ppm. Above 300 ppm is noticeable in taste. RO purification recommended.
Common in Hyderabad borewell areas. RO purification essential. Filters need more frequent replacement.
Very high TDS. May require multiple stages of purification. Common in outer ring road localities.
We test the TDS of your tap water before it enters the RO purifier. This is the baseline and determines how hard your purifier is working.
We test the TDS of the purified water from the dispenser. Ideal output is 50–150 ppm. Higher values may indicate membrane degradation.
We calculate what percentage of dissolved solids the membrane is removing. A healthy RO should have 90%+ rejection.
We measure how quickly water flows from the purifier. Slow flow (less than 1 litre per 4 minutes) indicates filter clogging or pressure issues.
Hyderabad's water supply comes from two primary sources: HMWSSB (municipal water, primarily from Osmansagar, Himayatsagar, and Krishna River) and local borewells. Municipal water typically has a TDS of 150–400 ppm, while borewell water varies widely — from 300 ppm in areas with good aquifers to over 1,200 ppm in hard water zones.
Areas like Gachibowli, Madhapur, and Banjara Hills receive predominantly municipal water with moderate TDS. Areas like Kompally, Alwal, Balanagar, Quthbullapur, and outer eastern localities often rely heavily on borewell water with significantly higher TDS and hardness. Residents in these areas experience faster filter clogging, faster membrane degradation, and more frequent RO servicing needs.
We recommend checking your water TDS at least once every 3–6 months. A simple handheld TDS meter (available for ₹200–₹500) can help you monitor output water quality between service visits. If you notice the output TDS rising above 150 ppm, call for a service visit to inspect the membrane.
TDS stands for Total Dissolved Solids. It measures the combined concentration of all dissolved substances in water — including minerals like calcium, magnesium, sodium, and potassium, as well as contaminants. TDS is measured in parts per million (ppm) or milligrams per litre (mg/L). The WHO guideline for acceptable drinking water TDS is below 300 ppm, with an upper limit of 600 ppm. Most RO purifiers produce water with TDS in the range of 30–100 ppm.
For drinking water, a TDS of 50–150 ppm is generally considered ideal by most water quality guidelines. The BIS (Bureau of Indian Standards) permits up to 500 ppm with a desirable limit of 300 ppm. Most RO purifiers in Hyderabad are set to produce water around 50–100 ppm via the TDS controller. If your RO output TDS exceeds 150 ppm, the membrane may need inspection or replacement.
Municipal (HMWSSB) water in Hyderabad typically has a TDS of 150–400 ppm depending on the area and season. Borewell water in outer localities like Kompally, Alwal, Quthbullapur, and areas along the ORR can have TDS ranging from 600 to 1,400 ppm. High TDS borewell water requires more frequent RO filter maintenance and membrane replacement.
The simplest check is to test the TDS of your purifier's output water using a TDS meter. If the output TDS is more than 10–20% of your input TDS, or is consistently above 150 ppm, the RO membrane may be losing rejection capability. Signs of poor performance also include: slow tank filling (over 4 hours), continuous drain water flow, unusual taste or smell, and visible cloudiness. Our technician performs a complete TDS and flow rate check during every service visit.
Water with very low TDS (below 30 ppm) lacks minerals that are beneficial to health, such as calcium and magnesium. Most RO purifiers include a TDS controller or mineraliser that blends some bypass water with the purified water to maintain output TDS between 50–150 ppm. If your RO output TDS is below 30 ppm, check whether the TDS controller is set correctly. This is something our technician checks during every maintenance visit.
Every RO service includes free TDS testing. Know your water quality today.