District|Tamil Nadu|Mettur Reservoir to Noyyal confluence sub-basin
Namakkal district
88% of the irrigated farmland is watered from wells (Season and Crop Report 2024-25), 5 of 8 taluks already draw more groundwater than recharges and 1 more is close to that line, and all 4,17,964 households on the JJM register are recorded with a tap, a 100.0% that reads as a reporting convention rather than a measurement.
Read as of 2026-09-06, from 322 Gram Panchayats in 15 blocks, 319 of them with a brief that cleared the evidence floor.
78,106 ha net irrigated: canals 10%, tanks 0%, tube and bore wells 15.8%, open wells 71.7%, other sources 2.5%.
District stage of extraction 115.9%, assessed over-exploited. Assessed per revenue taluk, not per block or Panchayat.
4,17,964 connections against 4,17,964 households in 319 Panchayats. Exactly 100.0% is read as reported complete, not measured.
Type a name, a block or an LGD code; all 322 are listed. Press Enter to open the first match, or browse by block further down.
What the district runs on
Irrigation from the district tables of the Season and Crop Report 2024-25, with the Census 2011 village pattern beneath it as the block-level baseline; drinking water from the sources JJM records today. A Panchayat without a measure lowers that measure’s denominator rather than counting as a zero.
- Canals10.0%(7,775 ha)
- Tanks0.0%(0 ha)
- Tube and bore wells15.8%(12,377 ha)
- Open wells71.7%(55,968 ha)
- Other sources2.5%(1,985 ha)
Season and Crop Report 2024-25, Table III-B, the district total: gross 1,14,022 ha with 35,916 ha irrigated more than once (intensity 1.46).
- Canals5.5%(2,536 ha)
- Wells86.1%(39,692 ha)
- Tanks1.0%(461 ha)
- Other sources7.4%(3,411 ha)
Census 2011 village tables, covering 208 of 322 Panchayats with a land record. Kept beneath the current reading because it is the only served source with a block gradient.
- Ground Water83.1%(6,219)
- Surface Water16.8%(1,254)
- Rain Water0.1%(7)
- Others0.0%(1)
- Bulk water (from MVS)0.0%(1)
JJM, read 2026-09-06. Commonest source types: Deep Tubewell (5,302), River (1,105), Open Well (778), Infiltration well (128).
83.1% of the 7,482 drinking-water sources JJM records here draw on groundwater (5,302 of them deep tubewells), against 1,254 on surface water.
The Mettur dependence
Canal water reaches only 5.5% of irrigated farmland (Mohanur, Pallipalayam and Kabilarmalai); the Mettur release is a local question here, not a district one.
Groundwater by taluk
IN-GRES assesses revenue taluks, not blocks or Panchayats. These are the units the district is actually assessed in, and the headroom reading is written from them.
IN-GRES 2024-2025 puts total groundwater availability across the 8 taluks at 52,434 ham a year, 25,473 ham of it rainfall recharge, with 8,982 ham (17.1%) left for future use. Of the 8 taluks, 5 over-exploited, 1 critical, 1 semi-critical and 1 safe. The district as a whole is assessed over-exploited at 115.9% of extraction. Headroom sits mostly in Paramathi Velur (2,309 ham) and is thinnest in Namakkal (95 ham).
| Taluk | Stage of extraction | Category | Rainfall recharge (ham) | Total availability (ham) | Left for future use (ham) | Rainfall (mm) |
|---|---|---|---|---|---|---|
| Rasipuram | 149.8% | over-exploited | 5,135 | 10,402 | 704 | 872 |
| Sendamangalam | 149.2% | over-exploited | 2,616 | 5,233 | 355 | 607 |
| Namakkal | 127.6% | over-exploited | 3,137 | 5,114 | 95 | 650 |
| Paramathi Velur | 108.7% | over-exploited | 2,737 | 10,960 | 2,309 | 579 |
| Mohanur | 108.4% | over-exploited | 2,229 | 6,873 | 1,936 | 669 |
| Tiruchengode | 99.9% | critical | 6,083 | 8,799 | 923 | 744 |
| Kumarapalayam | 88.0% | semi-critical | 1,816 | 3,044 | 717 | 766 |
| Kolli Hills | 0.5% | safe | 1,719 | 2,009 | 1,942 | 750 |
IN-GRES 2024-2025. The stage of extraction is annual draft as a share of total availability; above 100 percent, more is drawn each year than the taluk is assessed to have. Rainfall recharge is one component of that availability. The year is the hydrological-year label, not an edition date. 322 of 322 Panchayats inherit their containing taluk's category by spatial intersection, as containing-area context rather than a measurement of the place; 0 are deferred rather than guessed.
Blocks compared
The same measures per block. Where a district average hides a gradient, this is where it shows, and the findings are written before the table rather than left for the reader to find.
Canal share runs from 34.1% in Mohanur to 0.0% in Elachipalayam, Erumapatty, Kollihills, Mallasamudram, Namagiripet, Namakkal, Paramathy, Puduchatram, Rasipuram, Sendamangalam, Tiruchengode and Vennandur; wells fill the difference, 95.7% of irrigated farmland at the bottom of the gradient against 54.3% at the top.
No block reports a tap gap: every block records exactly 100.0% of households with a connection.
15 of 15 blocks report exactly 100.0% of households with a tap, and so does the district as a whole. A figure that exact across 4,17,964 households is a reporting convention, connections entered equal to households, and is read here as reported complete rather than measured.
| Drinking water, JJM | Farmland irrigation, Census 2011 | Groundwater, IN-GRES | Water bodies, TNGIS | Water-quality testing, JJM | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Block | Panchayats | Households with a tap | Irrigated area | from canals | from wells | from tanks | Taluk category, projected | Mapped | Untested 90+ d | Longest since tested |
| Elachipalayam | 29 | 100.0% | 2,549 ha | 0.0% | 90.8% | 9.2% | critical(29 of 29) | 98 | 0 | 46 d |
| Erumapatty | 24 | 100.0% | 4,433 ha | 0.0% | 98.9% | 1.1% | over-exploited(24 of 24) | 104 | 0 | 10 d |
| Kabilarmalai | 20 | 100.0% | 4,865 ha | 2.6% | 61.7% | 0.0% | over-exploited(20 of 20) | 67 | 8 | 149 d |
| Kollihills | 14 | 100.0% | 660 ha | 0.0% | 90.1% | 0.0% | safe(14 of 14) | 8 | 12 | 198 d |
| Mallasamudram | 27 | 100.0% | 3,484 ha | 0.0% | 100.0% | 0.0% | critical(27 of 27) | 99 | 0 | 23 d |
| Mohanur | 25 | 100.0% | 5,755 ha | 34.1% | 54.3% | 1.7% | over-exploited(25 of 25) | 92 | 3 | 111 d |
| Namagiripet | 18 | 100.0% | 4,169 ha | 0.0% | 89.5% | 0.0% | over-exploited(18 of 18) | 18 | 0 | 27 d |
| Namakkal | 25 | 100.0% | 2,579 ha | 0.0% | 100.0% | 0.0% | over-exploited(25 of 25) | 90 | 1 | 107 d |
| Pallipalayam | 15 | 100.0% | 2,533 ha | 18.1% | 81.9% | 0.0% | semi-critical(15 of 15) | 66 | 0 | 33 d |
| Paramathy | 20 | 100.0% | 2,218 ha | 0.0% | 75.0% | 0.0% | over-exploited(20 of 20) | 102 | 5 | 122 d |
| Puduchatram | 21 | 100.0% | 2,003 ha | 0.0% | 100.0% | 0.0% | over-exploited(21 of 21) | 74 | 3 | 174 d |
| Rasipuram | 20 | 100.0% | 1,812 ha | 0.0% | 100.0% | 0.0% | over-exploited(20 of 20) | 24 | 5 | 153 d |
| Sendamangalam | 14 | 100.0% | 2,015 ha | 0.0% | 100.0% | 0.0% | over-exploited(14 of 14) | 41 | 3 | 149 d |
| Tiruchengode | 26 | 100.0% | 4,854 ha | 0.0% | 100.0% | 0.0% | critical(26 of 26) | 156 | 0 | 29 d |
| Vennandur | 24 | 100.0% | 2,170 ha | 0.0% | 95.7% | 4.3% | over-exploited(24 of 24) | 50 | 1 | 100 d |
Canal, well and tank figures are shares of the irrigated farmland beside them, not of households and not of drinking water. They come from Census 2011 (Census 2011 release; village reference year 2009) and cover only the 208 Panchayats with a Census land record, so a block with few such records shows a share of a small area. Tap and testing figures are JJM and current at the read date. The talukcategory is the one most of the block’s Panchayats inherit by projection, since blocks and revenue taluks do not nest. Untested counts Panchayats whose most recent water-quality sample is more than 90 days before 2026-09-06; ninety days is the Atlas’s own threshold for calling a series stale, not a statutory testing interval.
Floods and scarcity
Two readings the directory families cannot carry: what the state's own disaster plan says about flood exposure here, and - where the state publishes one - the week's tanker register. Both are the state's documents, quoted and dated, not the Atlas's assessment.
Namakkal is not among the fourteen coastal districts the state disaster plan rates highly vulnerable; the plan does not classify inland flood exposure district by district, so that is the extent of what it states here, not a rating of safety.
“The 14 coastal Districts, viz., Chennai, Kancheepuram, Tiruvallur, Cuddalore, Villupuram, Thanjavur, Tiruvarur, Nagapattinam, Myladuthirai, Pudukottai, Ramanathapuram, Thoothukudi, Tirunelveli and Kanniyakumari are highly vulnerable and affected frequently by the trough and depression formed in the Bay of Bengal and Indian Ocean during South-West and North-East monsoon periods.”
Water bodies
The TNGIS all-water-bodies register, joined to each Panchayat by the register's own LGD code rather than by a name match.
In 268 Panchayats; 54 have none in the register. Registered by AED, DOSS, NRSC, TNRD, WRD. Waterspread is the mapped extent, not storage: it says nothing about whether these hold water through the year or when any one of them was last surveyed. Read 2026-09-06.
District Environment Plan
District Collector, Namakkal, for the District Committee; members include the District Environmental Engineers, Tamilnadu Pollution Control Board, Namakkal and Kumarapalayam prepared the plan on the CPCB model under the NGT's 2019 order. What it states about water is transcribed below, each figure with the page it sits on; nothing here is computed from it.
Dated 2019-11-28, 38 pages. Read the plan at MPCB (PDF). The cover is undated; the District Collector's signature on the last page is hand-dated 28/11/19, the PDF metadata creation date is 28 November 2019, and the upload path on namakkal.nic.in is 2019/11, so the edition is labelled 2019.
Transcription checked against the document on 2026-09-06.
| Figure | As stated | Where |
|---|---|---|
BOD threshold of the priority-I class under which CPCB lists the Cauvery The Cauvery is one of four Tamil Nadu stretches in priority-I; the same page states the Cauvery stretch in Namakkal district is priority-I. | 30 mg/l BOD | p. 19 (PDF p. 19) |
BOD target for restoring polluted stretches to bathing quality With faecal coliform below 500 MPN/100 ml; the NGT deadline was extended to 31.03.2021 by its order of 08.04.2019. | 3 mg/l BOD | p. 19 (PDF p. 19) |
Dyeing and bleaching units with Board consent in Kumarapalayam taluk All consented units are stated to run individual effluent treatment plants with zero liquid discharge. | 110 units | p. 24 (PDF p. 24) |
Dyeing and bleaching units with Board consent in Rasipuram taluk Paramathi Velur taluk has one more consented unit on the same line. | 12 units | p. 24 (PDF p. 24) |
Unauthorised textile dyeing and bleaching units identified earlier In Rasipuram, Kumarapalayam and Pallipalayam taluks; the plan says they were issued closure directions, had power disconnected, and are being demolished or evicted through the District Coordination Committee. | 236 units | p. 24 (PDF p. 24) |
Member units of the proposed Green Environmental Association CETP Proposed cost Rs 157 crore, land bought near Elanthakuttai village, Terms of Reference issued at the SEIAA meeting of 03.08.2018; consent to establish not yet applied for. | 118 member units | p. 25 (PDF p. 25) |
Member units of the proposed Kumarapalayam Green Cauvery Dyeing Cluster CETP Proposed cost Rs 150 crore; feasibility report submitted to the Government of Tamil Nadu. | 92 member units | p. 26 (PDF p. 26) |
Land bought for the Kumarapalayam Green Cauvery Dyeing Cluster CETP Near Elanthakutai and Sowthapuram villages, Kumarapalayam taluk; the line breaks after '28.0' and 'acres' follows on the next line. | 28 acres | p. 26 (PDF p. 26) |
Sewage generated in Tamil Nadu (state-wide) A state figure quoted in the section preamble; no district generation figure is printed anywhere in the plan. | 5,600 MLD | p. 28 (PDF p. 28) |
Sewage treatment capacity in operation in Tamil Nadu (state-wide) Across 54 sewage treatment plants at corporations and selected municipalities and town panchayats. | 1,400 MLD | p. 28 (PDF p. 28) |
Namakkal Municipality sewage treatment plant, consented capacity Consent to operate obtained; the plan records the plant as under operation. | 5 MLD | p. 28 (PDF p. 28) |
Rasipuram Municipality sewage treatment plant, consented capacity Consent to operate obtained; the plan records the plant as ready for commissioning. | 6.96 MLD | p. 30 (PDF p. 30) |
Minimum area of water bodies covered by the state restoration review Lakes, tanks, ponds and ooranis of 0.5 acre or more as recorded in the revenue record; the district's own water-body counts are left blank in the table on page 32. | 0.5 acre | p. 31 (PDF p. 31) |
Action points the plan sets for water: to carry out air quality monitoring, water quality monitoring (ground water) & compost quality in and around processing facilities & dump sites as per schedule i & ii of swm rules, 2016; special task force shall periodically review once in two weeks on the status of creating awareness and also on the prevention of dumping of solid waste and discharge of sewage in water bodies; monitoring of industries by periodical collection of sewage/ trade effluent sample for ascertaining water quality; all the municipalities and town panchayat shall cover their entire jurisdiction area under ugds scheme. sewage received in stp shall be treated to the discharge standards.; periodic monitoring of treated sewage with preferably online monitoring (parameters for analysis ph, bod, tss, tds, cod, total n, fecal coliform); industries located near common stp shall make mou with the operator of stp so as to utilize treated sewage to meet their industrial requirement after proper tertiary treatment; treated sewage from the common stps shall be utilized for industrial use, agriculture, ground water recharge and other non-domestic use; collection of data regarding sewage, solid waste disposal in river stretch with quality and prepare digital mapping with above details; desilting, removal of enchroachments & flood control measures; identification of river stretches where there are chances for illegal sand mining; frequent surprise checks in those river stretches by the taluk level task force, reporting fortnightly. Two things to know when reading the PDF: The cover cites Hon'ble NGT Order in O.A.No.710-713/2017 dated 15.07.2019, and the preamble the D.O. letter of 26.07.2019 that followed it, rather than O.A. 360/2018. The cover prints the title on two lines, 'District Environmental Plan' over 'Namakkal District'; the comma in the title here is added. The cover carries two emblems and the motto 'Pollution Prevention Pays' but no office name in its text, so the publisher is taken from the District Committee list on page 4 and the 'District Collector Namakkal' signature block on page 38. Every page carries a footer number equal to its PDF page number (the cover is page 1), so printedPage equals pdfPage throughout. Village panchayats are counted as 322 on page 5 and 633 on page 16. The 'status of water bodies' table on page 32 prints owner rows and column headings (available, rejuvenated in the past five years, under rejuvenation at present) but no counts; the work table below it starts at S.No 2. The sampling-point table on page 20 is headed 'Ground water Sample Collection points' although the surrounding text describes river (GEMS and MINARS) and sewage-drain samples; Kokkarayanpettai appears twice (rows 5 and 6) with identical coordinates. No district-level sewage generation figure is printed; the treated-sewage section gives the Tamil Nadu total and the consented capacities of two municipal STPs. The solid-waste authorisation row on page 10 leaves its dates blank ('as on __ date'). Page 38 is a scanned signature page whose text layer is OCR ('District Cornnrittee', 'Governm.ent', 'A11 Municipal Commissioners'); the signature over 'District Collector Namakkal' is hand-dated 28/11/19. The action tables carry no priority column, so every action point's priority is null. Section 12 is headed 'Prevention Illegal Sand Mining'; the index lists 13 entries (Introduction plus the 12 subjects) while the conclusion says the plan covers '12 subjects'.
Polluted river stretches
What CPCB's October 2025 (updated version) report lists for the district. Priority is CPCB's own BOD band on the 2022 and 2023 maximum, I the worst; station BOD for 2024 is the report's follow-up annexure. Each row says how it was joined to the district: a place CPCB prints, or the river's course.
Source: CPCB, Polluted River Stretches for Restoration of Water Quality, October 2025 (updated version) (cpcb.gov.in). The report is cited by annexure serial and PDF page; it is not mirrored here.
| River | Stretch or location, as CPCB prints it | Priority | Max BOD 2022 and 2023 (mg/L) | Stations, BOD 2024 | Since 2018 | Joined to this district by |
|---|---|---|---|---|---|---|
| Cauvery | RIVER CAUVERY AT ERODE NEAR VIRAPALAYAM TO PITCHAVARAM (Annexure III A, no. 122, PDF p. 91) | Priority II | 24 | 7, BOD 2.4 to 9 | improved from Priority I in 2018 | the river's course, as read by the maintainer: the Cauvery's left bank between Erode and Tiruchirappalli runs along Namakkal (maintainer's reading of the course; CPCB names no place in Namakkal) |
Find a Gram Panchayat
Every one of the 322 LGD-coded Gram Panchayats is listed. A place shows a water profile only where its evidence cleared the floor (identity, population and drinking-water service established); the rest are directory records, kept so they can be found and reviewed.
322 Gram Panchayats. 319 water profile, 3 directory record.
| 85 Goundampalayam | Elachipalayam | 225970 | Water profile |
| 85 R Komarapalayam | Rasipuram | 226209 | Water profile |
| 87 Goundampalayam | Elachipalayam | 225971 | Water profile |
| A erayamangalam | Tiruchengode | 226243 | Water profile |
| A K Samudram | Puduchatram | 226188 | Water profile |
| A Kunnathur | Kabilarmalai | 226023 | Water profile |
| Agaram | Elachipalayam | 225972 | Water profile |
| Agrahara Valavanthi | Erumapatty | 226020 | Water profile |
| Akalampatti | Elachipalayam | 225973 | Water profile |
| Akkaraipatti | Vennandur | 226270 | Water profile |
| Akkiampatti | Sendamangalam | 226229 | Water profile |
| Alampatti | Vennandur | 226271 | Water profile |
| Alanganatham | Erumapatty | 225999 | Water profile |
| Alathur Nadu | Kollihills | 226043 | Water profile |
| Alavaipatti | Vennandur | 226272 | Water profile |
| Anaipalayam | Rasipuram | 226210 | Water profile |
| Anangoor | Tiruchengode | 226244 | Water profile |
| Anangur | Kabilarmalai | 226024 | Water profile |
| Ananthagoundampalayam | Vennandur | 226269 | Water profile |
| Andapuram | Mohanur | 226084 | Water profile |
| Andipalayam | Tiruchengode | 226245 | Water profile |
| Animoor | Tiruchengode | 226246 | Water profile |
| Aniyapuram | Mohanur | 226085 | Water profile |
| Aniyar | Namakkal | 226127 | Water profile |
| Arasanatham | Mohanur | 226086 | Water profile |
| Arasapalayam | Rasipuram | 226211 | Water profile |
| Ariyur | Mohanur | 226087 | Water profile |
| Ariyur Nadu | Kollihills | 226044 | Water profile |
| Aroor | Mohanur | 226088 | Water profile |
| Avalnaickenpatti | Namakkal | 226128 | Water profile |
| Avinashipatti | Mallasamudram | 226057 | Water profile |
| Bail Nadu | Kollihills | 226045 | Water profile |
| Ballakuli | Mallasamudram | 226058 | Water profile |
| Ballakuli Agraharam | Mallasamudram | 226059 | Water profile |
| Belukurichi | Sendamangalam | 226230 | Water profile |
| Bodinaickenpatti | Erumapatty | 226000 | Water profile |
| Bodinaickenpatti | Rasipuram | 226212 | Water profile |
| Bommampatti | Elachipalayam | 225974 | Water profile |
| Bommasamudram | Sendamangalam | 226231 | Water profile |
| Bommasamuthiram | Erumapatty | 226001 | Water profile |
The district on a map
Every Panchayat with a mapped boundary is plotted from the centre of its own TNGIS polygon, not from a hand-entered coordinate. The marker is the Panchayat, not a settlement.
322 of 322 Panchayats have a mapped boundary. The polygons themselves are withheld pending the TNGIS licence reply.
How current these figures are
Not everything on this page is from the same year, and the gap is large. What each figure describes is listed separately from when the Atlas last read it, straight from each artifact's own record.
| Figures | Describes | Last read | Produced | Notes |
|---|---|---|---|---|
| Panchayat list and codes | 2021-03-11 (PDF CreationDate) | 2026-09-06 | 2026-09-06 | TNRD LGD directory, cross-checked against the current TNRD master on the retrieval date. |
| Drinking-water service, sources, testing | current at 2026-09-06 | 2026-09-06 | 2026-09-06 | Jal Jeevan Mission citizen corner: habitations, tap connections, sources, sample rows. |
| Irrigation by source, district | Season and Crop Report 2024-25 | 2026-09-06 | 2026-09-06 | DES Season and Crop Report Table III-B: net area irrigated per source at district grain. The block gradient below stays Census 2011 until a taluk-grain source is wired. |
| Land, irrigation and seasonal sources | Census 2011 release; village reference year 2009 | 2026-09-06 | 2026-09-06 | Census 2011 village tables, the newest village-level irrigation enumeration served here. The Season and Crop Report district mix above is the current reading; the 2017-18 Minor Irrigation Census (wells and tanks by village) is not wired yet. |
| Groundwater assessment | 2024-2025 | 2026-09-06 | 2026-09-06 | IN-GRES, assessed per revenue taluk. The year is the hydrological-year label. |
| Groundwater projected to Panchayats | 2024-2025 | 2026-09-06 | 2026-09-06 | Each Panchayat inherits its containing taluk's category by spatial intersection. |
| Rainfall | 2026-08-07 to 2026-09-06 | 2026-09-06 | 2026-09-06 | Open-Meteo reanalysis at a grid point inside each Panchayat, not a gauge. |
| Water bodies | as mapped; the register carries no survey date | 2026-09-06 | 2026-09-06 | TNGIS all-water-bodies register, counts and areas only. |
| Panchayat briefs | 2026-09-06 | 2026-09-06 | 2026-09-06 | Generated from the families above; a place without identity, population and service stays directory-only. |
| District Environment Plan | 2019 plan, dated 2019-11-28 | 2026-09-06 | 2026-09-06 | Transcribed from the published PDF with the page each figure sits on; nothing computed from it. |
| Flood classification | Tamil Nadu State Disaster Management Plan 2023, 2023-03-18 | 2026-09-02 | 2026-09-02 | The plan's own flood classification, quoted with its page; the Atlas classifies nothing itself. A revised plan replaces this line wholesale. |
The land, irrigation and seasonal-source figures are the oldest thing here by a wide margin. India’s 2021 census did not take place, so Census 2011 remains the most recent village-level enumeration and there is no newer source of the same granularity to replace it with. Those figures are kept under capabilities named historical, and the current-crop capability is left empty rather than answered with a 2009 number.