Certificate under SEBI (Depositories and Participants) Regulations, 2018

October 12, 2026 The Manager The Manager, Listing Department Listing Department National Stock Exchange of India Limited BSE Limited Exchange Plaza,C-1, Block G Phiroze Jeejeebhoy Towers Bandra-Kurla Complex, Bandra (E) Dalal Street MUMBAI-400 051 MUMBAI-400 001 Symbol: DENTA Scrip Code: 544345 Company Name: Denta Water and Infra Solutions Limited Dear Sir/Madam, Subject: Certificate under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018 Please find enclosed herewith a Certificate received under Regulation 74(5) of SEBI (Depositaries and Participants) Regulations, 2018, from M/s Integrated Registry Management Services Private Limited having its registered office at #30, Ramana Residency, 4th Cross, Sampige Road, Malleswaram, Bangalore – 560 003. the Registrar and Share Transfer Agent of the Company for the Quarter ended September 30, 2026. Kindly take the same on your record. Thanking you. For Denta Water and Infra Solutions Limited Sujata Gaonkar Company Secretary and Compliance Officer Encl.: As above Denta Water and Infra Solutions Limited CIN: L70109KA2016PLC097869 #40, 3rd Floor, Sri Lakshminarayana Mansion, South End Road, Basavanagudi, Bengaluru 560004 080 - 2991 6509 IRMSPL/DENTA/09SS/SEP2026 October 12, 2026 Denta Water and Infra Solutions Ltd, 40, Sri Lakshminarayana Mansion, 3rd Floor, South End Road, Basavanagudi, Bangalore - 560004 Kind Attn: Ms. Sujata Gaonkar - Company Secretary & Compliance Officer Dear Sir/Madam, Certificate pursuant to Regulation 74(5) of SEBI (Depositories and Participants) Sub: Regulations, 2018 -For the period 01.07.2026 to 30.09.2026 This has reference to the Regulation 74(5) of SEBI (Depositories and Participants) Regulations 2018, we hereby confirm that we have not received any request for dematerialisation or rematerialisation of shares for the period 01.07.2026 to 30.09.2026. Thanking You. Yours faithfully, For Integrated Registry Management Services Private Limited S Giridhar General Manager INTEGRATED REGISTRY MANAGEMENT SERVICES PRIVATE LTD #30, Ramana Residency, 4th Cross, Sampige Road, Malleswaram, Bangalore – 560 003. Phone No.: 080 2346 0815 to 818 Fax No.: 080 2346 0819 Fixed Deposits related query Email ID: fd@integratedindia.in / Shares related query Email ID: giri@integratedindia.in Regd.Office: 2nd Floor,Kences Towers, No.1, Ramakrishna Street, North Usman Road, T. Nagar, Chennai – 600 017 CIN:U74900TN2015PTC101466 ; SEBI Regn No: INR000000544 “Appointment of a nominee for the shares held by you is not an option but your right!! Please exercise your right to nominate”