It has come to our attention that statutory authorities and government agencies are actively conducting inspections of apartment STPs and collecting water samples.   To ensure transparency, proper documentation, and effective verification of STP test results, all Apartment Associations are advised to follow the steps below whenever a sample is collected by an authority or agency:   

 ●     The Association / Managing Committee (MC) should be informed of any proposed inspection and sample collection, wherever applicable. 

●     Sampling must be carried out strictly in coordination with an authorized representative of the Association.   

2. Simultaneous Sample Collection 

Two samples should be collected simultaneously from the exact same sampling point and under identical conditions: 

●     One sample for the inspecting authority/agency. 

●     One sample retained by the Association for independent testing.

 ●     A spot report must be prepared on-site by the collecting official, and an exact copy handed over to the Association immediately. 

●       The Association’s retained sample should preferably be tested at an independent, NABL-accredited laboratory.

 (Note: Please refer to Section 21 of The Water (Prevention and Control of Pollution) Act, 1974 for further legal requirements and details regarding sample collection and admissibility of test results.)  

 

3. Comparison of Test Results 

The Association should obtain and retain the complete official test report and compare it thoroughly with its independently obtained test results, including: 

●     Sampling date and exact location 

●     Parameters tested 

●     Reported values against applicable discharge standards 

Any significant variation between the two reports should be formally documented and, where necessary, clarified with the respective laboratories or authorities.   

4. Regular STP Testing & Records 

Associations should maintain a structured record of routine testing for STP-treated water. The following documents should be readily available for reference: 

●     Periodic laboratory test reports 

●     Date and location of sampling 

●     Parameters tested 

●     Corrective actions taken, wherever applicable   

Any result from an ad-hoc inspection should be compared against the Association’s historical testing baseline to establish whether it aligns with normal operating performance.   

5. STP Operator / Maintenance Agency’s Assessment 

In the event of any reported non-compliance, the Association should immediately obtain a technical assessment from the STP maintenance agency or operator, detailing:   

●     Possible causes for the reported deviation 

●     Operating conditions at the time of sampling 

●     Corrective measures undertaken or proposed 

●     Subsequent test results, where available   

6. Monthly Water & STP Data 

Associations are advised to maintain monthly logs of: 

●     Total fresh water consumption 

●     Total volume of water treated through the STP 

●     Quantity and percentage of treated water reused within the complex 

●     STP logbook recording running hours and operational performance of pumps, blowers, and machinery   

Maintaining this data helps establish the overall water balance and operational health of the plant.   

7. Test Reports & Supporting Documents 

All test reports shared with residents, Association members, or federation bodies (such as BAF) must be clear, complete, and legible. Associations are advised to maintain a central compliance record of all inspections, sampling logs, laboratory reports, official correspondence, STP operational data, and corrective actions.   

Please note that a full list of compliance terms and conditions to be followed are part of the Consent-for-Operation (CFO) issued by the Pollution Control Board.  

3.  COD                             < 50 mg/l 

4.  Suspended Solids      < 10 mg/l 

Reference Videos: (YouTube Links)

 𝗕𝗔𝗙 𝗣𝗮𝗿𝗶𝗵𝗮𝗿𝗮 | 𝗦𝗧𝗣 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻, 𝗢𝗖𝗘𝗠𝗦 & 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗠𝗼𝗻𝗶𝘁𝗼𝗿𝗶𝗻𝗴

BAF Parihara | Efficient Waste Water Management | Grey water & Black water Treatment


Communication Control # 1617
Date : 24th September 2026
Advisory
Audience : Management Committees of Member Apartments