Most claims about tank water quality in Hyderabad are anecdotal. This one isn't, it's a full before/after breakdown from an independent, NABL-accredited lab (Terra Environ Labs Pvt. Ltd.), tested across 22 physicochemical parameters, verified against the Indian drinking water standard, IS 10500:2012.
The full picture
| Parameter | Before | After | Reduction |
|---|---|---|---|
| Total Dissolved Solids | 746 mg/L | 96 mg/L | ↓ 87% |
| Turbidity | 4.2 NTU | <1.0 NTU | ↓ 76% |
| Total Hardness | 204 mg/L | 42 mg/L | ↓ 79% |
| Electrical Conductivity | 1129 µS/cm | 173 µS/cm | ↓ 85% |
| Colour | 18 CU | <5 CU | ↓ 72% |
| Calcium Hardness (as CaCO₃) | 112 mg/L | 22 mg/L | ↓ 80% |
| Magnesium Hardness (as CaCO₃) | 92 mg/L | 20 mg/L | ↓ 78% |
| Calcium (as Ca) | 44 mg/L | 8.8 mg/L | ↓ 80% |
Verdict from the lab report: "Complete compliance with IS 10500:2012 across all 22 tested parameters. Average dissolved contaminant reduction: 82%." Signed by M. Nithya Chandana, Technical Manager, Terra Environ Labs Pvt. Ltd.
Why this matters beyond one tank
This single report is a real, verifiable data point, not an industry-average estimate. The pattern it shows (high dissolved solids, elevated hardness, visible turbidity, all well within compliance after treatment) is broadly consistent with what untested tanks across Hyderabad's mixed municipal/borewell supply typically carry, but this article deliberately doesn't generalize beyond what's actually been tested. Based on lab testing from a recent service, as more jobs accumulate real water-test data, this piece will grow into an aggregate, area-by-area dataset.