Water Quality RFPs
Discover water quality RFP opportunities from state environmental agencies, water quality districts, and EPA regions. Track solicitations for water testing, treatment systems, and water quality monitoring programs updated daily.
The New York State Department of Environmental Conservation (NYSDEC) intends to enter into a sole-source contract with the Suffolk County Department of Health Services to conduct Long Island Pesticide Pollution Prevention Strategy (PPPS) water quality monitoring in Nassau and Suffolk Counties for a five-year period. This notice is a single-source procurement exempt from advertising per the Office of the State Comptroller exemption approval dated April 14, 2026; questions should be directed to the listed DEC contact. The posting was opened on 2026-04-20 and the close date is listed as TBD, so the opportunity is currently open as of 2026-04-22.
Posted Date
Release: Apr 20, 2026
Due Date
Close: Dec 31, 2026
Conduct a comprehensive water quality monitoring program. Provide valuable data on nutrients (nitrogen, phosphorous), water temperature, salinity, dissolved oxygen concentrations, chlorophyll and turbidity for the waters of nantucket sound.
Posted Date
Release: May 11, 2026
Due Date
Close: Jun 3, 2026
The Michigan Department of Environment, Great Lakes, and Energy is soliciting Water Quality Monitoring Services under solicitation NIA1-761-240000001477-1 for a five-year contract with up to two one-year renewal options. The posting is listed on the state's SIGMA VSS system and the aggregator lists the proposal close date as 2030-09-25 and shows the opportunity as active (last updated 2025-11-19).
Posted Date
Release: Sep 24, 2024
Due Date
Close: Sep 25, 2030
Water quality structure inspection, cleaning and maintenance.
Posted Date
Release: May 8, 2026
Due Date
Close: Jun 5, 2026
Improvements and retrofits to existing stormwater conveyance, treatment and detention systems. The project includes clearing and grubbing, roadway excavation, stormwater conveyance, stormwater treatment, retrofit of stormwater detention facilities, CIPP lining, paving with HMA, erosion control, curb/gutter, traffic control, and site restoration during construction includes 1,230 LF testing storm sewer pipe, 100 LF solid wall PVC storm sewer pipe 12" diam., 470 LF schedule A storm sewer pipe 12" diam., 1 EA hydrodynamic separator, 350 LF cured in place pipe lining 12" diam., 1 EA abandon existing manhole, 1 LS abandon detention facility central.
Posted Date
Release: May 6, 2026
Due Date
Close: Jun 3, 2026
Absolute standards, inc. Pt/pt-qta and qc samples - total microcystins (epa 546), item # 38668.
Posted Date
Release: May 20, 2026
Due Date
Close: Jun 3, 2026
The potable water sampling lines at the Platte West Water Production Facility are deteriorated and contaminated with microbial growth. This project will replace the existing lines with new copper piping materials that resist microbial buildup, protect integrity and will also include replacement of the pumps.
Posted Date
Release: May 19, 2026
Due Date
Close: Jun 16, 2026
Purchase of water quality, detention pond service & inspection.
Posted Date
Release: May 20, 2026
Due Date
Close: Jun 11, 2026
Supply of chemicals.
Posted Date
Release: May 17, 2025
Due Date
Close: Jun 9, 2026
Purchase of IDEXX - Water Quality Testing Supplies.
Posted Date
Release: May 13, 2026
Due Date
Close: Jun 4, 2026
Provide aquatic monitoring, water quality and vegetation control services.
Posted Date
Release: May 21, 2026
Due Date
Close: Jun 11, 2026
Final water quality-based effluent limitation for phosphorus which states that there shall be no net loading of total phosphorus to the water bodies.
Posted Date
Release: Apr 28, 2026
Due Date
Close: Jun 5, 2026
The Chittenden County Regional Planning Commission requests qualifications from municipalities and organizations to serve as project managers and implementors for water quality improvement projects in the Northern Lake Champlain Direct Drainages Basin. The RFQ describes required experience, scope of work, and evaluation criteria to identify qualified entities to manage and implement those projects.
Posted Date
Release: May 31, 2025
Due Date
Close: Jun 30, 2026
Qualified firms or individuals to provide the implementation of per- and polyfluoroalkyl substances (PFAS) treatment to meet Environmental Protection Agency (EPA) regulations and compliance milestones by April 2031 (the “Project”). The Project is needed to address PFAS regulations implemented by the EPA. Respondents should have an established reputation and documented successful experience in providing planning, design, permitting, and implementation of water quality improvement projects, ion exchange systems, and/or PFAS treatment solutions for water facilities, in compliance with applicable EPA and state regulatory requirements.
Posted Date
Release: Apr 28, 2026
Due Date
Close: Jun 24, 2026
The City of Riverside is soliciting bids to install complete raceway systems and test all wires, cables, and appurtenances to convert an existing centrifuge into a standalone biosolids centrifuge with independent controls. This formal public bid requires a California Class A general engineering license and includes a mandatory onsite pre-bid meeting at the Riverside Regional Water Quality Control Plant. The project has an estimated value of approximately $817,000 and requires the electronic submission of a notarized bid bond via the PlanetBids portal.
Posted Date
Release: May 18, 2026
Due Date
Close: Jun 25, 2026
CAL FIRE (California Department of Forestry and Fire Protection) issued a sell-event RFx for potable water and wastewater quality testing services for the Shasta Trinity Unit fire stations and conservation camps, set aside to California-certified small businesses. The contract requires laboratory testing for numerous inorganic substances, regulated VOCs, nitrates/nitrites, coliforms, oil & grease, lead & copper, and mandates Environmental Laboratory Accreditation Program (ELAP) compliance; estimated period of performance is June 30, 2026–June 29, 2029. The solicitation was posted on 2026-05-14 and bids are due on 2026-05-29; the official posting and response instructions are on Cal eProcure.
Posted Date
Release: May 14, 2026
Due Date
Close: May 30, 2026
The Town of North Hempstead seeks a qualified consultant to prepare annual Manhasset Bay water quality reports, involving data analysis, interpretation, mapping, quality assurance, comparison to standards, and correlation analysis.
Posted Date
Release: May 7, 2026
Due Date
Close: Jun 11, 2026
The Massachusetts Department of Transportation is seeking a contractor for the scheduled and emergency clean out and repair of Water Quality Control Structures. This project specifically targets infrastructure within the I-90 and I-93 tunnels in Boston with an estimated value of $735,000. The scope includes routine maintenance and emergency response capabilities to ensure proper water quality management within the tunnel systems.
Posted Date
Release: May 4, 2026
Due Date
Close: Jun 16, 2026
This project will retrofit catch basins / curb inlets along both sides of NE Highway 99 between NE 78th Street and NW 86th Street by installing storm filter cartridges to provide water quality treatment. This project will also retrofit cat basins / curb inlets along both sides of NE Highway 99 from around Hazel Del Plaza to around NW 102nd Street (minus 99th Street) by installing storm filter cartridges to provide water quality treatment. Primary bid items: traffic control, ITS relocation and replacement, sewer pipe, stormwater vault, stormwater filter catch basins, HMA CL 3/8", concrete curb and gutter, concrete sidewalk.
Posted Date
Release: May 12, 2026
Due Date
Close: Jun 2, 2026
Provide professional consulting services for the city's fire and ems department, including QA/QI program development, implementation, ongoing management, and as-needed operational training/supervision support.
Posted Date
Release: May 24, 2026
Due Date
Close: Jun 22, 2026
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