Drinking Water Emerging Contaminants Grants for Small or Disadvantaged Communities
Idaho Department of Environmental Quality
Grants to address emerging contaminants such as PFAS in drinking water at small or disadvantaged systems.
Varies — check official page
OpenGrantEnvironment & WaterDisadvantaged Communities
The catch: Letter of interest is scored and ranked, so an invitation is not guaranteed; the emerging-contaminant purpose must exceed 50% of project cost. Amount, match and term were not stated on the pages fetched.
Next deadline: Jan 8, 2027 · Annual letter-of-interest round; FY2028 letters of interest due January 8, 2027 (the Drinking Water and Wastewater Funding page lists an FY2028 Emerging Contaminants LOI form)
Eligibility, how to apply, match, contact
- Eligibility
- Public water systems serving fewer than 10,000 people or identified as disadvantaged; the primary purpose (more than 50% of cost) of the project must be addressing emerging contaminants.
- How to apply
- Direct application: complete the FY28 Drinking Water Emerging Contaminants LOI form and email it to [email protected] by January 8, 2027; highest-rated projects are invited to apply for funding.
- Applicant types
- Public Agency, Nonprofit
- Award size
- Varies — check official page
- Funding source
- Federal
- Geography
- Idaho
- Submit via
- true
- Contact
- name: Grants and Loans Bureau; email: [email protected];
Emergency Funding for Drinking Water and Wastewater Systems
Idaho Department of Environmental Quality
Set-aside money for emergency needs at SRF-eligible water and wastewater systems.
Varies — check official page
OpenOtherEnvironment & WaterDisaster Prevention & Relief
The catch: Limited annual pot; criteria are in the fiscal-year Intended Use Plan. Whether funds are a grant or loan is not stated on the page.
Next deadline: Rolling · Rolling; $200,000 for drinking water and $200,000 for wastewater allocated each fiscal year, first-come first-served
Eligibility, how to apply, match, contact
- Eligibility
- Drinking water and wastewater systems eligible for SRF funding with an emergency need that meets the criteria in the current Intended Use Plan.
- How to apply
- Direct application: contact the Grants and Loans Bureau Chief at the DEQ State Office to discuss the need and the application process.
- Applicant types
- Public Agency, Nonprofit
- Award size
- Varies — check official page
- Geography
- Idaho
- Contact
- email: [email protected];
Facility Planning Grants (Drinking Water and Wastewater)
Idaho Department of Environmental Quality
Pays half the cost of an engineer-prepared facility plan for a drinking water or wastewater system.
Historically up to $45,000 (drinking water) and $65,000 (wastewater) of DEQ match
OpenGrantMatch 50%Environment & WaterDisadvantaged Communities
The catch: Letter of interest comes first and the grant is only offered if you rank high enough. The recipient must hire a professional engineer to prepare the plan, cover the other 50%, and (if seeking SRF financing) complete an environmental information document. The match must be in hand to be placed on the priority list.
Next deadline: Jan 8, 2027 · Annual: letters of interest are invited in mid-October and due in January (FY2028 LOIs due January 8, 2027); highest-rated projects are invited to apply after the Board of Environmental Quality approves the priority list, typically in May, with applications invited from July 1
Applicant tip: Planning grants are the usual first step toward an SRF construction loan, so file the letter of interest even if construction is years away; DEQ offers free technical assistance with the form.
Eligibility, how to apply, match, contact
- Eligibility
- Counties, cities, special service districts, other governmental entities and nonprofit corporations with wastewater authority; public drinking water systems (community and non-community). Systems must be current on fines, SRF loans and fees owed to DEQ and able to pay the non-grant share.
- How to apply
- Direct application: submit the FY2028 Letter of Interest and Rating Form for your system type (links on the Drinking Water and Wastewater Funding page) to [email protected] by January 8, 2027; if ranked high enough, DEQ invites a full planning grant application. Contact your DEQ regional office for help.
- Applicant types
- Public Agency, Nonprofit
- Award size
- Historically up to $45,000 (drinking water) and $65,000 (wastewater) of DEQ match
- Match
- 50%
- Geography
- Idaho
- Submit via
- true
- Contact
- name: Maryanna Peavey, Grants and Loans Bureau Chief; email: [email protected]; tel: (208) 373-0122;
- Statutory authority
- IDAPA 58.01.22
Reduction of Lead Exposure Funding
Idaho Department of Environmental Quality
Funds to replace lead pipes or fixtures or address corrosive water at at-risk systems.
Varies — check official page
OpenOtherEnvironment & WaterHealth & Human Services
The catch: Annual statewide cap, no rollover, and the system must already be identified by DEQ as at risk. A DEQ award of $1,400,000 in drinking water lead service line loan funding was announced October 19, 2026, so some lead funding is delivered as SRF loans.
Next deadline: Rolling · Rolling; $500,000 available each year statewide, first-come first-served, unused funds not carried forward
Eligibility, how to apply, match, contact
- Eligibility
- Public drinking water systems (including public K-12 schools) identified by DEQ as at risk for lead.
- How to apply
- Direct application: contact DEQ's Grants and Loans staff through the funding pages to discuss the project.
- Applicant types
- Public Agency, School District, Nonprofit
- Award size
- Varies — check official page
- Geography
- Idaho
- Contact
- email: [email protected];
Section 319 Nonpoint Source Grants
Idaho Department of Environmental Quality
Competitive grants for projects that reduce nonpoint source pollution and improve Idaho's lakes, streams, rivers and aquifers.
Up to $250,000
ExpectedGrantMatch 40%Environment & WaterAgriculture
The catch: 40% match required; indirect costs capped at 15% of modified total direct costs (or a federally negotiated rate); contracts run three years; funds are paid on invoices submitted to DEQ.
Next deadline: Expected: July 2027 · Annual; 2026 application period April 20 to July 17 and now closed; the page says 2027 information will be available in early 2027
Applicant tip: Basin Advisory Groups rank proposals after oral presentations, so line up partners and other funding sources before you apply.
Eligibility, how to apply, match, contact
- Eligibility
- Any party with an eligible nonpoint source project; projects covered by a draft or final IPDES permit are excluded for several categories. Projects should be ready to implement, target TMDL pollutants and involve multiple partners.
- How to apply
- Direct application: apply through DEQ's Euna/AmpliFund grant management system using the Application Materials Guide; applicants give an oral presentation to the local Basin Advisory Group.
- Applicant types
- Public Agency, Nonprofit, Business, Other Legal Entity
- Award size
- Up to $250,000
- Funding source
- Federal
- Match
- 40%
- Geography
- Idaho
- Submit via
- true
- Contact
- email: [email protected];
- Statutory authority
- Clean Water Act section 319
Sewer Overflow and Stormwater Planning Grants
Idaho Department of Environmental Quality
Planning funds to address sanitary sewer overflows and municipal stormwater improvements.
Varies — check official page
OpenGrantEnvironment & WaterDisadvantaged Communities
The catch: Scored and ranked letter of interest first; award size, match and funding source were not stated on the pages fetched.
Next deadline: Jan 8, 2027 · Annual letter-of-interest round; FY2028 letters of interest due January 8, 2027
Eligibility, how to apply, match, contact
- Eligibility
- Communities with a population under 10,000 or that qualify as disadvantaged, with sewer overflow or stormwater planning needs.
- How to apply
- Direct application: complete the FY28 Sewer Overflow and Stormwater Planning Grant LOI form and email it to [email protected] by January 8, 2027.
- Applicant types
- Public Agency, Nonprofit
- Award size
- Varies — check official page
- Geography
- Idaho
- Submit via
- true
- Contact
- name: Grants and Loans Bureau; email: [email protected];
Source Water Protection Grants
Idaho Department of Environmental Quality
Grants to reduce the risk of contamination of public drinking water sources.
Varies — check official page
Confirm with agencyGrantEnvironment & Water
The catch: Electronic AmpliFund submission is required and awards are processed (invoiced) through AmpliFund. The page says funding depends on availability.
Next deadline: Varies — check official page · Annual when funding is available; the page says the FY2025 cycle is closed and expected the FY2026 cycle to open early in 2026; no later round is posted
Eligibility, how to apply, match, contact
- Eligibility
- Public water systems, state and local government agencies, tribes, special districts, associations, nonprofits and educational institutions in Idaho; federal agencies and for-profit privately owned systems are excluded.
- How to apply
- Direct application: register as an AmpliFund user through the DEQ opportunity link on the program page, read the Source Water Protection Grant Guidelines, and submit the full application package electronically.
- Applicant types
- Public Agency, Nonprofit, Tribal Government, Higher Education, School District, Other Legal Entity
- Award size
- Varies — check official page
- Geography
- Idaho
- Submit via
- true
- Contact
- name: Scott Short, Source Water Protection Coordinator; email: [email protected]; tel: (208) 373-0191;
State Agricultural Best Management Practices Grants
Idaho Department of Environmental Quality
State-funded cost share for agricultural practices that improve water quality in impaired waters.
Up to $250,000
ExpectedGrantMatch 40%AgricultureEnvironment & Water
The catch: 40% match; 18-month implementation timeframe; indirect costs capped at 15% of modified total direct costs; multiple partners and leveraged funding expected.
Next deadline: Expected: April 2027 · Annual; 2026 application timeframe March 16 to April 17 and now closed; the page says 2027 information will be available in early 2027
Eligibility, how to apply, match, contact
- Eligibility
- Farmers and ranchers with projects targeting agricultural practices that improve water quality and meet TMDL objectives; projects must be ready to implement with a completed work plan and budget.
- How to apply
- Direct application: apply through DEQ's Euna/AmpliFund grant management system using the Application Materials Guide; submit a completed work plan and budget.
- Applicant types
- Business
- Award size
- Up to $250,000
- Funding source
- State
- Match
- 40%
- Geography
- Priority watersheds with impaired water bodies in Idaho
- Submit via
- true
- Contact
- email: [email protected];
State Revolving Fund Construction Loans (Drinking Water and Clean Water)
Idaho Department of Environmental Quality
Low-interest loans, with principal forgiveness for disadvantaged systems, to design and build drinking water and wastewater facilities.
Varies — loans of up to 100% of project costs
OpenLoanNo matchEnvironment & WaterDisadvantaged Communities
The catch: Loans must be repaid with interest (20 years standard; up to 30 for disadvantaged systems). Federal strings apply: Build America, Buy America, American Iron and Steel, Davis-Bacon prevailing wages and environmental review. DEQ also checks legal and environmental requirements before offering a loan.
Next deadline: Jan 8, 2027 · Annual: letters of interest are invited in mid-October and due in January (FY2028 LOIs due January 8, 2027); highest-rated projects are invited to apply after the Board of Environmental Quality approves the priority list, typically in May, with applications invited from July 1
Applicant tip: Attend DEQ's LOI training (November 9, 2026) and call your regional office first; most systems have a consulting engineer complete the letter of interest.
Eligibility, how to apply, match, contact
- Eligibility
- Counties, cities, special service districts, other governmental entities and nonprofit corporations with wastewater authority; community public water systems and nonprofit non-community public water systems. Projects must be on the fundable range of the annual Intended Use Plan.
- How to apply
- Direct application: submit the FY2028 Drinking Water SRF or Clean Water SRF Letter of Interest to [email protected] by January 8, 2027; systems on the fundable list are invited to submit the loan application in the SRF Customer Handbook, normally shortly after Board of Environmental Quality approval of the Intended Use Plan.
- Applicant types
- Public Agency, Nonprofit
- Award size
- Varies — loans of up to 100% of project costs
- Funding source
- Federal and State
- Match
- Not Required
- Geography
- Idaho
- Submit via
- true
- Contact
- name: Maryanna Peavey, Grants and Loans Bureau Chief; email: [email protected]; tel: (208) 373-0122;
- Statutory authority
- IDAPA 58.01.12
Vehicle Replacement Rebate Program (Volkswagen Trust and DERA)
Idaho Department of Environmental Quality
Competitive cost-share rebates to replace older diesel vehicles with cleaner ones.
Varies — check official page
Confirm with agencyRebateEnvironment & WaterTransportation
The catch: Competitive cost-share rebates tied to scrapping or replacing eligible older diesel vehicles; no open round.
Next deadline: Varies — check official page · Periodic; rounds in 2019, 2020 and 2025; the page says future programs depend on available funding and none is open
Eligibility, how to apply, match, contact
- Eligibility
- Fleets operating older diesel vehicles, such as school districts, transit agencies, local governments and private fleets; details are set in each round's program documents.
- How to apply
- Pass-through: no round is open; DEQ posts new vehicle replacement rebate programs on the Volkswagen and Diesel Funding page and offers an email update subscription.
- Applicant types
- School District, Public Agency, Business
- Award size
- Varies — check official page
- Funding source
- Other
- Geography
- Idaho
Woodstove Changeout Program (St. Maries)
Idaho Department of Environmental Quality
Rebates for homeowners to replace older woodstoves with cleaner-burning appliances.
Varies — check official page
OpenRebateEnvironment & WaterEnergy
The catch: Must use a participating vendor who removes and destroys the old stove; low-income applicants are served first and remaining funds go to others first come first served. Rebate amounts were not stated on the page.
Next deadline: Dec 31, 2026 · Area-by-area as funding becomes available; the St. Maries cycle application deadline is December 31, 2026
Eligibility, how to apply, match, contact
- Eligibility
- Legal owner of a home inside the St. Maries program area with a non-EPA-certified wood-burning appliance (or an EPA-certified wood or pellet appliance at least 20 years old); purchase, installation and old-stove destruction must be done by a DEQ-participating vendor.
- How to apply
- Direct application: complete the Homeowner application from the program page (plus the Homeowner/Tenant agreement for rentals) and use a DEQ-participating vendor.
- Applicant types
- Individual
- Award size
- Varies — check official page
- Geography
- St. Maries, Idaho program area