| Award | Cleaning and CCTV Inspection | Environmental Protection | National Water Main Cleaning Co. | $6.5M | Renewal | Oct 7, 2025 | 82622B0058001R001 |
| Award | TLC-22 Removal and Disposal of Debris/Residuals ACCUMULATED IN TRUNK LINES | Environmental Protection | National Water Main Cleaning Co. | $12.3M | Competitive Sealed Bids | Mar 26, 2024 | 82623B0042001 |
| Award | Removal/disposal of debris/residuals in Sewer Syst Citywide | Environmental Protection | National Water Main Cleaning Co. | $6.7M | Renewal | Dec 27, 2022 | 82620B8317KXLR001 |
| Award | TV-21-MQX Cleaning and CCTV inspection of Sewers up to 84 inches & appurtenances at unknown locations - Manhattan, Queens, Bronx | Environmental Protection | National Water Main Cleaning Co. | $9.8M | Competitive Sealed Bids | Dec 7, 2022 | 82622B0058001 |
| Award | Cleaning/CCTV Insp of sewers up to 84 in/Apput,Bklyn, SI | Environmental Protection | National Water Main Cleaning Co. | $2.2M | Renewal | Nov 8, 2021 | 82620B8297KXLR001 |
| Award | Cleaning/CCTV Insp of sewers up to 84 in/Apput,Mnh, Qn, BX | Environmental Protection | National Water Main Cleaning Co. | $2.2M | Renewal | Nov 8, 2021 | 82620B8296KXLR001 |
| Award | REMOVAL AND DISPOSAL OF DEBRIS/RESIDUALS ACCUMULATED IN TRUNK LINES OF THE CITY SEWER SYSTEM AT UNKNOWN LOCATIONS, CITYWIDE | Environmental Protection | National Water Main Cleaning Co. | $5.5M | Competitive Sealed Bids | Apr 17, 2020 | 82620B0011001 |
| Award | CLEANING AND CCTV INSPECTION OF SEWERS UP TO 84 INCHES AND APPURTENANCES , MANHATTAN, QUEENS, AND THE BRONX | Environmental Protection | National Water Main Cleaning Co. | $4.5M | Competitive Sealed Bids | Dec 2, 2019 | 82619B0078001 |
| Award | CLEANING AND CCTV INSPECTION OF SEWERS UP TO 84 INCHES AND APPURTENANCES AT UNKNOWN LOCATIONS BROOKLYN AND STATEN ISLAND | Environmental Protection | National Water Main Cleaning Co. | $4.5M | Competitive Sealed Bids | Dec 2, 2019 | 82619B0079001 |
| Award | SERVICES OF A MOBILE VACTOR, JET FLUSHER MACHINE FOR SEWER AND CATCH BASIN CLEANING WITH AN OPERATOR AND LABORER, MANHATTAN AND BRONX | Environmental Protection | National Water Main Cleaning Co. | $3.2M | Competitive Sealed Bids | Jul 17, 2017 | 82617B0017001 |
| Award | SERVICES OF A MOBILE VACTOR JET FLUSHER MACHINE FOR SEWER AND CATCH BASIN CLEANING WITH AN OPERATOR AND LABORER, STATEN ISLAND AND BROOKLYN | Environmental Protection | National Water Main Cleaning Co. | $2.3M | Competitive Sealed Bids | Jul 17, 2017 | 82617B0018001 |
| Award | REMOVAL AND DISPOSAL OF DEBRIS/RESIDUALS ACCUMULATED IN TRUNK LINES OF THE CITY SEWER SYSTEM AT UNKNOWN LOCATIONS, CITYWIDE | Environmental Protection | National Water Main Cleaning Co. | $3.1M | Competitive Sealed Bids | Mar 20, 2017 | 82616B0033001 |
| Award | SEWER AND CATCH BASIN CLEANING MACHINE WITH OPERATOR AND LABOR FOR VARIOUS LOCATIONS WITHIN THE 5 BOROUGHS. | Environmental Protection | National Water Main Cleaning Co. | $467K | Competitive Sealed Bids | Jun 10, 2009 | 8260900SCM09 |
| Award | CLEANING TELEVISION INSPECTION AND DIGITAL AUDIO VISUAL RECORDING CITYWIDE. | Environmental Protection | National Water Main Cleaning Co. | $2.2M | Competitive Sealed Bids | Oct 15, 2008 | 82609000SC99 |
| Award | CLEANING OF SEWERS IN ZEREGA AVENUE SYSTEM, PHASE B BRONX NEW YORK. | Environmental Protection | National Water Main Cleaning Co. | $681K | Competitive Sealed Bids | Aug 26, 2008 | 82608000SC97 |
| Award | CLEANING OF SEWERS QUEENS NEW YORK. | Environmental Protection | National Water Main Cleaning Co. | $312K | Competitive Sealed Bids | Nov 7, 2007 | 82607000SC91 |
| Award | CLEANING OF SEWERS IN ZEREGA AVENUE SYSTEM, BRONX, N.Y. | Environmental Protection | National Water Main Cleaning Co. | $1.5M | Competitive Sealed Bids | Nov 7, 2007 | 82607000SC93 |
| Award | STORMWATER INFRASTRUCTURE VIDEO INSPECTION and DIGITAL MAPPING PROGRAM IN BOYD CORNERS and WEST BRANCH RESERVOIR BASINS UPSTATE. | Environmental Protection | National Water Main Cleaning Co. | $1.3M | Competitive Sealed Bids | Feb 6, 2007 | 82606WS00012 |
| Award | CLEANING TELEVISION INSPECTION AND DIGITAL AUDIO -VISUAL RECORDING IN THE CITY SYSTEM, CITYWIDE. | Environmental Protection | National Water Main Cleaning Co. | $1.1M | Competitive Sealed Bids | Aug 3, 2006 | 82605000SC87 |
| Award | CLEANING TELEVISION INSPECTION and DIGITAL AUDIO-VISUAL RECORDING IN THE CITY SEWER SYSTEM, CITYWIDE. | Environmental Protection | National Water Main Cleaning Co. | $1.9M | Competitive Sealed Bids | Jul 31, 2006 | 826070TV001 |
| Award | TELEVISION INSPECTION AND DIGITAL AUDIO VISUAL CITYWIDE. | Environmental Protection | National Water Main Cleaning Co. | $1.6M | Competitive Sealed Bids | May 5, 2004 | 82603OTV0009 |