Gram Panchayat|LGD 228907Water profile
Unjiyaviduthi
Part of Thiruvonam block, Thanjavur district, in the Cauvery Delta sub-basin.
Every household has a tap, drawn from an aquifer in deficit
All 793 households report a tap connection, while Orathanadu is assessed over exploited at 108.2 percent of extraction. Service is complete; the source is not secure.
793 of 793 households, across 11 habitations.
Deep Tubewell, Spring
Orathanadu is assessed over exploited. This describes the taluk, not this Panchayat.
30 rain days between 2026-08-01 and 2026-08-31, modelled rather than gauged.
Safe on 2026-08-27. 132 samples over 5 years, none of them recorded unsafe.
Place and boundary
The mapped extent comes from the TNGIS Panchayat polygon for this LGD code, so the place on the map is the place the records describe.
- LGD Panchayat code
- 228907
- Block
- Thiruvonam
- District
- Thanjavur
- Mapped area
- 512.158 ha
- Centroid
- 10.5186, 79.1895
Habitations
JJM records service for each habitation separately. A Panchayat total can hide a habitation that is behind.
| Habitation | Population | Households | Tap connections |
|---|---|---|---|
| Dakchanmurthy Puram | 132 | 35 | 35 |
| Kalvirayanviduthi Main Road | 155 | 40 | 40 |
| Kandiyanachi | 325 | 127 | 127 |
| Kariyaviduthi | 943 | 216 | 216 |
| Maruthuvar Theru | 386 | 122 | 122 |
| Pallar Theru | 130 | 19 | 19 |
| Ungiaviduthi Keela T | 258 | 67 | 67 |
| Unjiyaviduthi | 269 | 34 | 34 |
| Vellathaven Viduthi | 370 | 54 | 54 |
| Vellathevan Viduthi West | 98 | 23 | 23 |
| Vellathevanviduthi Adc | 263 | 56 | 56 |
Where the water comes from
The schemes JJM records as serving this Panchayat, grouped by the kind of source they draw on.
| Source | Category | Count |
|---|---|---|
| Deep Tubewell | Ground Water | 27 |
| Spring | Bulk water (from MVS) | 1 |
Groundwater, projected from the taluk
IN-GRES assesses revenue taluks. This Panchayat inherits its containing taluk's category unchanged, as containing-area context rather than a measurement of the place.
Orathanadu taluk, by centroid in taluk.
Groundwater drawn each year as a share of what recharges, for the whole taluk. Above 100 is more drawn than recharges.
Sub-district on the revenue hierarchy, which the Panchayat hierarchy does not nest inside.
The assessment unit is a revenue taluk, not the Gram Panchayat: each Panchayat inherits its containing taluk's category and stage of extraction unchanged, as containing-area context rather than a measurement of the place. Containment is decided by the TNGIS polygon centroid (vertex fallback for concave polygons); a Panchayat that falls in no taluk or in a taluk without an assessment is deferred, never guessed. 8 TNRD blocks span more than one revenue taluk, so a block-to-taluk name match would have been wrong.
Tanks and water bodies
Mapped by TNGIS and assigned to this Panchayat by the register itself, not by a name match.
7 water bodies cover 9.3 ha here, the largest of them 3.4 ha. The register names 6 of them; the names and polygons are withheld pending the TNGIS licence reply.
Waterspread is the mapped extent, not storage. It says nothing about whether these hold water through the year, whether they are encroached, or when any one of them was last surveyed.
| Registered by | Water bodies |
|---|---|
| NRSC | 5 |
| AED | 1 |
| WRD | 1 |
Water-quality testing
132 samples between 2022-11-24 and 2026-08-27. 61 were taken at a source and 71 at households.
None was recorded unsafe. A clean run this long describes the reporting as much as the water, so read it as an absence of recorded failures rather than as evidence of safety.
| Year | Samples |
|---|---|
| 2022 | 5 |
| 2023 | 32 |
| 2024 | 20 |
| 2025 | 34 |
| 2026 | 41 |
What is missing
13 of 40 capabilities are supported by acquired evidence. The rest are named here rather than left blank.
Nothing acquired for this district answers these, so they are named rather than estimated.
- drinking water reliability
- historical water access
- groundwater level observation
- groundwater level trend
- aquifer context
- catchment context
- water body condition
- waterway network
- flood hazard
- observed flood events
- natural drainage
- wastewater service
These may not be meaningful for an inland rural Panchayat. Until that is decided, they are neither claimed nor dismissed.
- surface water change
- river water quality
- engineered stormwater drainage
- wastewater treatment assets
- pollution pressure inventory
- measured water pollution
- coastal and estuarine
- historical agricultural baseline
- current crop and irrigation state
- soil water context
- agricultural water system relation
- crop water demand
- agricultural water stress observation
- agricultural water pollution pressure
- composite priority score