Gram Panchayat|LGD 229256Water profile
Mappedu
Part of Kadambathur block, Tiruvallur district.
Universal taps on a source still within its limit
All 1,738 households report a tap connection and Tiruvallur remains assessed safe at 56.2 percent of extraction.
1,738 of 1,738 households, across 15 habitations.
Deep Tubewell, Shallow Tubewell
Tiruvallur is assessed safe. This describes the taluk, not this Panchayat.
31 rain days between 2026-08-07 and 2026-09-06, modelled rather than gauged.
Safe on 2026-07-28. 232 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
- 229256
- Block
- Kadambathur
- District
- Tiruvallur
- Mapped area
- 1,914.147 ha
- Centroid
- 13.0364, 79.8754
Habitations
JJM records service for each habitation separately. A Panchayat total can hide a habitation that is behind.
| Habitation | Population | Households | Tap connections |
|---|---|---|---|
| Alinchivakkam | 571 | 162 | 162 |
| Alinchivakkam Colony | 286 | 60 | 60 |
| Alinchivakkam Mettu Colony | 101 | 52 | 52 |
| Gandhipettai Colony | 289 | 69 | 69 |
| Mappedu | 600 | 154 | 154 |
| Mappedu Colony | 1,017 | 273 | 273 |
| Mappedu Koottu Road | 568 | 226 | 226 |
| Mettu Kadai | 424 | 172 | 172 |
| Mettucheri | 569 | 158 | 158 |
| Poovallikuppam | 106 | 39 | 39 |
| Samathuva Nagar | 161 | 61 | 61 |
| Samathuvapuram | 626 | 112 | 112 |
| Usain Nagar | 280 | 50 | 50 |
| Usain Nagar Colony | 185 | 64 | 64 |
| Viswanatha Kuppam | 374 | 86 | 86 |
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 | 26 |
| Shallow Tubewell | Ground Water | 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.
Tiruvallur 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. 6 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.
32 water bodies cover 125.3 ha here, the largest of them 30.7 ha. The register names 13 of them; the names and polygons are not shown on this page.
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 |
|---|---|
| AED | 20 |
| WRD | 5 |
| TNRD | 4 |
| NRSC | 2 |
| DOSS | 1 |
Water-quality testing
232 samples between 2022-11-09 and 2026-07-28. 99 were taken at a source and 133 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 | 6 |
| 2023 | 55 |
| 2024 | 127 |
| 2025 | 41 |
| 2026 | 3 |
Land and irrigation
Census 2011, reference year 2009. A historical baseline, not current cropping.
of 1,929.85 ha total.
canal 0 ha, wells 130.71 ha, tanks 523.83 ha.
culturable waste; barren 32.48 ha, forest 0 ha.
Sources through the summer
Census 2011, reference year 2009.
7 source types were recorded for the year and 7 held through the summer months. None failed.
This is the 2009 pattern and says nothing about whether today’s piped supply holds through summer.
What is missing
16 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
- 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
- engineered stormwater drainage
- wastewater treatment assets
- pollution pressure inventory
- measured water pollution
- coastal and estuarine
- 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