| Water | Air | Name & Address of the Industry | Office / DEE | Type of Unit | Category | Date of issue Consent order | Validity |
| 41[05-11] | 41[05-11] | M/s. Asian Health & Nutri Foods Ltd., Unit II, Gummidipoondi Tk. | Tiruvallur | Chemical Mixing | Orange Large | 31-05-2011 | 31-03-2011 |
| 9411[05-11] | 6676[05-11] | M/s.Suhesh Industries, Gummidipoondi Taluk. | Tiruvallur | Foundries | Red Small | 31-05-2011 | 30-06-2011 |
| 8036[05-11] | 5468[05-11] | M/s. ACE Industrieal Gases Pvt, Ltd., Gummidipoondi Taluk. | Tiruvallur | Chemical Unit | Red Small | 31-05-2011 | 30-06-2011 |
| 22328[05-11] | 18364[05-11] | M/s. Golden Foundries, Gummidipoondi Taluk. | Tiruvallur | Foundries | Red Small | 31-05-2011 | 30-06-2011 |
| 75[05-11] | 75[05-11] | M/s. Redington, Gummidipoondi Taluk. | Tiruvallur | Cement/Scrap | Orange Large | 31-05-2011 | 31-03-2013 |
| 54[05-11] | 54[05-11] | M/s. Power soap Ltd, Gummidipoondi Taluk. | Tiruvallur | Small Soap | Orange Small | 31-05-2011 | 30-09-2012 |
| 65[05-11] | 65[05-11] | M/s. Leitner Shriram Mfg., Ltd, Gummidipoondi Taluk. | Tiruvallur | Plastic | Orange Large | 31-05-2011 | 31-05-2012 |
| 88[05-11] | 88[05-11] | M/s.MRP MDI Rubber Solutions Pvt, Ltd, Tiruvallur Taluk. | Tiruvallur | Miscellaneous | Orange Small | 31-05-2011 | 30-09-2013 |
| 268[05-11] | 268[05-11] | M/s.Kemin Industries South Aria Pvt Ltd., Gumidipoondi Taluk. | Tiruvallur | Chemical Mixing | Orange Large | 31-05-2011 | 31-03-2012 |
| 110[05-11] | 110[05-11] | M/s.Kaveri Industries, Gummidipoondi Taluk | Tiruvallur | Building Metail | Orange Small | 25-05-2011 | 30-09-2013- |
| 92[05-11] | 92[05-11] | M/s.Gumho - NT (I) Auto Parts Pvt., Ltd., Uthukootai Taluk. | Tiruvallur | Light Engg | Orange Large | 27-05-2011 | 31-03-2013 |
| 7[05-11] | 7[05-11] | M/s. Indo Tech Transfomers Ltd., Poonamallee Taluk. | Tiruvallur | Light Engg | Orange Large | 20-05-2011 | 31-03-2012 |
| 369[05-11] | 374[05-11] | M/s. Sri Balaji Foods, Pallipet Taluk | Tiruvallur | F & B | Orange Small | 19-05-2011 | 30-09-2012 |
| 10771[05-11] | 7726[05-11] | M/s.India Rosin Industries Gummidipoondi Taluk. | Tiruvallur | Miscellaneous | Orange Small | 28-05-2011 | 31-09-2012 |
| 426[05-11] | 433[05-11] | M/s.Queensland (Rajam Hotles Pvt., Ltd., Poonamallee Taluk. | Tiruvallur | Amusement park | Orange Large | 16-05-2011 | 31-03-2012 |
| 410[05-11] | 471[05-11] | M/s.Pleasants Days Rajam Hotels Pvt., Ltd., Poonamallee Taluk. | Tiruvallur | Hotel | Orange Medium | 16-05-2011 | 31-03-2012 |
| 47[05-11] | 47[05-11] | M/s.W.R. Grace & Co. (I) Pvt., Ltd., Poonamallee Taluk. | Tiruvallur | Chemical Mixing | Orange Large | 20-05-2011 | 31-03-2012 |
| 111[05-11] | 111[05-11] | M/s. Srideva Lam Pvt., Ltd, Karanai, Tiruvallur Taluk. | Tiruvallur | Lamination boark MFG unit | Orange Small | 09-05-2011 | 30-09-2012 |
| 78[05-11] | 78[05-11] | M/s. Smartech Engineering and services, Kakkalur, Tiruvallur Taluk | Tiruvallur | Light Engg Units. | Orange Small | 09-05-2011 | 30-09-2012 |
| 105[05-11] | 105[05-11] | M/s. Madras Radiators & Pressing Ltd., Gummidipoondi Taluk | Tiruvallur | Light Engg | Orange Medium | 9/5/2011 | 31-03-2012 |
| 647[05-11] | 650[05-11] | M/s. SMR Automotive Systems (I) Ltd, Poonamallee Taluk | Tiruvallur | Light Engg | Orange Large | 9/5/2011 | 30-09-2012 |
| 844[05-11] | 846[05-11] | M/s. Chem Excel (I) Pvt., Ltd, Poonamallee Taluk | Tiruvallur | Chemical Mixing | Orange Small | 9/5/2011 | 30-09-2012 |
| 9235[05-11] | 894[05-11] | M/s. Rajam Industrials, Poonamallee Taluk | Tiruvallur | Small Soap | Orange Small | 9/5/2011 | 30-09-2012 |
| 51[05-11] | 51[05-11] | M/s.Sundaram Fasteners Ltd., Plant - 4, Gummidipoondi Taluk | Tiruvallur | Light Engg | Orange Large | 12/5/2011 | 31-03-2013 |
| 8[05-11] | 8[05-11] | M/s. Leewon Precision Pvt., Ltd., Valur village, Tiruvallur Taluk | Tiruvallur | Miscellaneous | Orange Medium | 17-05-2011 | 31-03-2013 |
| 19319[05-11] | 15371[05-11] | M/s. Sri Chakra Industries., Gummidipoondi Taluk | Tiruvallur | Tar & Tar Products. | Red Small | 12/5/2011 | 30-06-2012 |
| 833[05-11] | 835[05-11] | M/s. Rajam Industries, Poonamallee Taluk | Tiruvallur | Small Soap units | Orange Small | 12/5/2011 | 30-09-2012 |
| 940[05-11] | 949[05-11] | M/s. Kenmore Shoes Pvt, Ltd., Poonamallee Taluk. | Tiruvallur | Miscellaneous | Green Large | 12/5/2011 | 30-03-2012 |
| 22357[05-11] | 18393[05-11] | M/s.Rudra Polymers, Poonamallee Taluk. | Tiruvallur | Recycled Plastic | Red Small | 12/5/2011 | 30-06-2012 |
| 33[05-11] | 33[05-11] | M/s. Oriental Trimex Ltd., Gummidipoondi Taluk | Tiruvallur | Stone & Granite Polishing | Orange Large | 04-05-2011 | 31-03-2012 |
| 929[03-11] | 938[03-11] | M/s. Vervan coatings (P) Ltd., Thirumazhisai, Poonamallee Taluk. | Tiruvallur | Chemical Mixing / storge | Orange - Small | 04-03-2011 | 30-09-2012 |
| 56[03-11] | 56[03-11] | M/s.S.P. Traders, Poonamallee Taluk. | Tiruvallur | Miscellaneous | Orange - Small | 04-03-2011 | 30-09-2012 |
| 666[03-11] | 669[03-11] | M/s.Faaber paints & Pvt, Ltd., Thirumazhisai SIDCO, Poonamallee Taluk. | Tiruvallur | Paint/Enamal/Varnish/Mfg, units. | Red - Small | 18-03-2011 | 30-06-2011 |
| 13029[03-11] | 9647[03-11] | M/s.Nippon Thermostat (India) Ltd., SIDCO Industrial Estate, Gummidipoondi Taluk. | Tiruvallur | Light Engg | Orange - Large | 30-03-2011 | 31-03-2013 |
| 496[02-11] | 491[02-11] | M/s. Siva's & S Product Pvt, Ltd, Tiruvallur Taluk. | Tiruvallur | Chemical Mixing | Orange - Small | 21-02-2011 | 30-09-2011 |
| 20938[02-11] | 16973[02-11] | M/s. Keyaarers Enterprises Pvt, Ltd, Poonamallee Taluk. | Tiruvallur | Tar & Tar Products | Red - Small | 17-02-2011 | 30-06-2011 |
| 60[02-11] | 60[02-11] | M/s.Nash Industries Poonamallee Taluk. | Tiruvallur | Light Engg | Orange - Large | 17-02-2011 | 31-03-2012 |
| 21[02-11] | 21[02-11] | M/s.Sigma Pack Poonamallee Taluk. | Tiruvallur | Printing | Orange - Large | 17-02-2011 | 31-03-2012 |
| 20808[02-11] | 16843[02-11] | M/s.Vijayam Bio Cytes Pvt, Ltd. Tiruvallur Taluk. | Tiruvallur | Chemical | Red - Small | 22-02-2011 | 30-06-2011 |
| 434[01-11] | 441[01-11] | M/s. Hanil Automotive India Pvt.Ltd unit-III Tiruvallur T.k. | Tiruvallur | Light Engg | Orange - Large | 03-01-2011 | 31-03-2012 |
| 8211[01-11] | 5637[01-11] | M/s. Svi Annapurna Steel Enterprises Gummidipoondi. | Tiruvallur | Steel Rolling | Orange - Mediam | 06-01-2011 | 31-03-2012 |
| 45[01-11] | 45[01-11] | M/s.Reesheco E Systems, Kakkalur Tiruvallur | Tiruvallur | Electrical & Electronic | Orange - Small | 06-01-2011 | 30-09-2011 |
| 4[01-11] | 4[01-11] | M/s.Cross Manufacturing co, Senneerkuppam village, Tiruvallur, Poonamallee T.k. | Tiruvallur | Light Engg, Unit | Orange - Small | 11-01-2011 | 31-03-2012 |
| 12887[01-11] | 9519[01-11] | M/s.Compact Automotive Lamps Pvt.Ltd, Karanai village, Tiruvallur Taluk and District | Tiruvallur | Electrical & Electronic unit | Orange - Mediam | 12-01-2011 | 31-03-2011 |
| 21280[01-11] | 17317[01-11] | M/s. Manish Petrochemi Pvt.Ltd. Kakkalur, Tiruvallur Tk. | Tiruvallur | Hazadous Substarces storage. | Red - Small | 20-1-2011 | 30-06-2011 |
| 1000[01-11] | 1011[01-11] | M/s.Adheswara Chemicals Pvt.Ltd, Panapakkam, Uthukottai Tk. | Tiruvallur | Pulverising units. | Orange - Small | 21-01-2011 | 30-09-2011 |
| 357[01-11] | 352[01-11] | M/s.GKK Exports Pvt.Ltd, Poonamallee, Chennai-56. | Tiruvallur | Miscellaneous. | Green - Small | 21-01-2011 | 31-12-2012 |
| 2400[12-10] | 2280[12-10] | M/s. Madras Hydralic Hose Pvt, Ltd, Gummidipoond Taluk | Tiruvallur | Light Engg | Oange - Small | 06-12-2010 | 31-03-2011 |
| 979[12-10] | 988[12-10] | M/s.Ammaiyaipper Textiles Pvt, Ltd, Tiruvallur Taluk | Tiruvallur | Textile | Oange - Large | 07-12-2010 | 31-03-2011 |
| 1006[12-10] | 1017[12-10] | M/s.Star Boxes Pvt, Ltd Tiruvallur Taluk | Tiruvallur | Corrugated Boxes | Oange - Large | 15-12-2010 | 31-03-2012 |
| 7064[12-10] | 4619[12-10] | M/s.Western Thomson India Ltd, Gummidipoondi Taluk | Tiruvallur | Light Engg | Orange - Medium | 14-12-2010 | 31-03-2012 |
| 537[12-10] | 541[12-10] | M/s.S.V.L Enterprises, Plant-II, Tiruvallur Taluk | Tiruvallur | Phosphating | Oange - Small | 23-12-2010 | 30-09-2011 |
| 9886[12-10] | 7887[12-10] | M/s.EMES Industries, Tiruvallur Tk | Tiruvallur | Foundries | Red - Small | 23-12-2010 | 30-06-2012 |
| 52[12-10] | 52[12-10] | M/s.Adani Agro Logistics Ltd, Gummidipoondi Tk | Tiruvallur | Light Engg | Oange - Large | 17-12-2010 | 31-03-2012 |
| 55[11-10] | 55[11-10] | M/s. Balaji Agencies, Tiruvallur Taluk | Tiruvallur | Misc. | Oange - Small | 10-11-2010 | 30-09-2011 |
| 869[11-10] | 872[11-10] | M/s. Ambica Plastic Gummidipoondi Taluk | Tiruvallur | Plastic | Red - Small | 18-11-2010 | 30-09-2012 |
| 727[11-10] | 729[11-10] | M/s. Deejay Plastic Pvt, Ltd, Gummidipoondi Taluk | Tiruvallur | Plastic | Oange - Small | 18-11-2010 | 31-03-2011 |
| 66[11-10] | 66[11-10] | M/s. Heal India Laboratories Pvt Ltd, Uthukottai Taluk | Tiruvallur | Pharmacetical | Orange - Medium | 23-11-2010 | 31-03-2011 |
| 62[11-10] | 62[11-10] | M/s. Indira Enterprises Tiruvallur Taluk | Tiruvallur | Cement | Oange - Small | 23-11-2010 | 31-03-2011 |
| 29[11-10] | 29[11-10] | M/s. Magnum Casuals International Pvt, Ltd, Poonammallee Tk | Tiruvallur | Garments | Oange - Large | 23-11-2010 | 31-03-2012 |
| 37[11-10] | 37[11-10] | M/s. Jindal Stainless Steelway Ltd, Gummidipoondi Tk | Tiruvallur | Light Engg | Oange - Small | 25-11-2010 | 31-03-2012 |
| 4340[11-10] | 2274[11-10] | M/s. Golden Subramanin Flour Mills Ltd, Tiruthani Tk. | Tiruvallur | Flour Mill | Oange - Small | 31-11-2010 | 31-03-2012 |
| 5804[10-10] | 3479[10-10] | M/s.Mekuba Petro Products GummidipoondiTaluk | Tiruvallur | Grace Mfg | Red - Small | 13-10-2010 | 30-06-2012 |
| 710[10-10] | 710[10-10] | M/s.Akshaya Aqua Farms (Plastic Unit) Tiruvallur TK | Tiruvallur | Plastic | Oange - Small | 13-10-2010 | 30-09-2012 |
| 19823[10-10] | 15872[10-10] | M/s.Gayathrri Products, poonammallee Tk | Tiruvallur | Mosquito Coil | Red - Small | 15-10-2010 | 09-06-2012 |
| 882[10-10] | 882[10-10] | M/s Sharadha Ceramics Pvt, Ltd, Tiruvallur TK | Tiruvallur | Ceramics | Oange - Small | 11-10-2010 | 30-06-2011 |
| 34[10-10] | 34[10-10] | M/s Graves Cotton Ltd , Gummidipoondi Tk. | Tiruvallur | Light Engg | Oange - Large | 20-10-2010 | 31-03-2012 |
| 650[10-10] | 653[10-10] | M/s Faaber Paints Pvt, Ltd, Pooonammalle Tk. | Tiruvallur | Chemical Mixing | Oange - Small | 20-10-2010 | 30-09-2012 |
| 19161[10-10] | 15740[10-10] | M/s. Pondy Oxides & Chemicals Ltd, Tiruvallur TK. | Tiruvallur | Foundries | Red - Small | 26-10-2010 | 30-06-2011 |
| 46[10-10] | 46[10-10] | M/s. JKR Stone Crushing, Tiruvallur Tk. | Tiruvallur | Stone/Mineral Crshing | Oange - Small | 26-10-2010 | 30-092011 |
| 11840[10-10] | 8617[10-10] | M/s Mathura Polymers, Gummidipoondi Tk. | Tiruvallur | Plastic | Oange - Small | 27-10-2010 | 30-09-2011 |
| 36[10-10] | 36[10-10] | M/s Dalmia Lamination, Gummidipoondi Tk. | Tiruvallur | Plastic | Oange - Large | 27-10-2010 | 31-03-2012 |
| 67[10-10] | 67[10-10] | M/s. Codina Metalic Pvt, Ltd, Gummidipoondi Tk. | Tiruvallur | Light Engg | Orange - Medium | 27-10-2010 | 31-11-2011 |
| 41[10-10] | 41[10-10] | M/s. Asian Health & Nutri Foods Ltd, Unit -II, Gummidipoondi Tk. | Tiruvallur | F & B | Orange - Medium | 27-10-2010 | 31-032011 |
| 71[10-10] | 71[10-10] | M/s.Akshaya Aqua Farms (Packaging Drinking Water) Tiruvallur Tk. | Tiruvallur | Mineral Water | Oange - Small | 18-10-2010 | 30-09-2011 |