	Introduction

The Clean Water Act (CWA) authorizes the principal federal program to aid municipal wastewater treatment plant construction and related eligible activities. The federal share of project costs, originally 75% under P.L. Congress's response to this debate was contained in 1987 amendments to the act ( P.L. In 1996, Congress established a parallel program under the Safe Drinking Water Act (SDWA) to help communities finance projects needed to comply with federal drinking water regulations. 104-182 ), which authorized a drinking water state revolving loan fund (DWSRF) program to help systems finance projects needed to comply with SDWA regulations and to protect public health. This program, fashioned after the CWSRF program, authorizes EPA to make grants to states to capitalize DWSRFs which states then use to make loans to public water systems. Capitalization grants for DWSRF programs were provided for the first time in FY1997. Although the authorizations for appropriations expired in FY2003, Congress continued to provide funding for the program in annual appropriations, totaling $23 billion through FY2019. America's Water Infrastructure Act of 2018 (AWIA; P.L. Summary of Water Infrastructure Appropriations

 Table 1 summarizes funding for the wastewater and drinking infrastructure programs since enactment of the 1987 CWA amendments ( P.L. 100-4 ). Funding for these EPA programs is contained in the appropriations act providing funds for the Department of the Interior, Environment, and Related Agencies. Since FY1996, this account has been titled State and Tribal Assistance Grants (STAG). Additional Subsidization

Although the CWSRF and DWSRF have largely functioned as loan programs, both allow the implementing state agency to provide "additional subsidization" under certain conditions. Since its amendments in 1996, the SDWA has authorized states to use up to 30% of their DWSRF capitalization grants to provide additional assistance, such as forgiveness of loan principal or negative interest rate loans, to help disadvantaged communities (as determined by the state). In 2018, AWIA increased that percentage to 35% and conditionally required states to provide at least 6% of their annual grants as additional subsidization. Congress amended the CWA in 2014, adding similar provisions to the CWSRF program. In addition, appropriations acts in recent years have required states to use minimum percentages of their allotted funds to provide additional subsidization. For water infrastructure and state and tribal assistance, the request totaled $2.852 billion consisting of
$1.35 billion for clean water SRF grants (the request included language that would authorize states the discretion to use this SRF money either for clean water or drinking water projects), $165 million for U.S.-Mexico border projects, Texas colonias , and Alaska Native Village projects, $113 million for needy cities projects, $550 million for drinking water infrastructure SRF funding, contingent upon enactment of authorizing legislation, and $674 million for state performance partnership consolidated management grants, which could address a range of environmental programs. Further, the funding amounts specified in P.L. 115-141 also provided $63 million for the WIFIA program, more than doubling the FY2017 appropriation. In addition, the act provided the first appropriations for three programs authorized in the WIIN Act ( P.L. Final full-year appropriations were enacted as part of the Consolidated Appropriations Act, FY2019 ( P.L. 116-6 ), signed by President Trump on February 15, 2019. FY2020

The Trump Administration's FY2020 budget request proposed $6.07 billion overall for EPA.
The principal federal program to aid municipal wastewater treatment plant construction is authorized in the Clean Water Act (CWA). Established as a grant program in 1972, it now capitalizes state loan programs through the clean water state revolving loan fund (CWSRF) program. Since FY1972, appropriations have totaled $98 billion.
In 1996, Congress amended the Safe Drinking Water Act (SDWA, P.L. 104-182) to authorize a similar state loan program for drinking water to help systems finance projects needed to comply with drinking water regulations and to protect public health. Since FY1997, appropriations for the drinking water state revolving loan fund (DWSRF) program have totaled $23 billion.
The U.S. Environmental Protection Agency (EPA) administers both SRF programs, which annually distribute funds to the states for implementation. Funding amounts are specified in the State and Tribal Assistance Grants (STAG) account of EPA annual appropriations acts. The combined appropriations for wastewater and drinking water infrastructure assistance have represented 25%-32% of total funds appropriated to EPA in recent years.
Prior to CWA amendments in 1987 (P.L. 100-4), Congress provided wastewater grant funding directly to municipalities. The federal share of project costs was generally 55%; state and local governments were responsible for the remaining 45%. The 1987 amendments replaced this grant program with the SRF program. Local communities are now often responsible for 100% of project costs, rather than 45%, as they are required to repay loans to states. The greater financial burden of the act's loan program on some cities has caused some to seek continued grant funding.
Although the CWSRF and DWSRF have largely functioned as loan programs, both allow the implementing state agency to provide "additional subsidization" under certain conditions. Since its amendments in 1996, the SDWA has authorized states to use up to 30% of their DWSRF capitalization grants to provide additional assistance, such as forgiveness of loan principal or negative interest rate loans, to help disadvantaged communities. America's Water Infrastructure Act of 2018 (AWIA; P.L. 115-270) increased this proportion to 35% while conditionally requiring states to use at least 6% of their capitalization grants for these purposes.
Congress amended the CWA in 2014, adding similar provisions to the CWSRF program. In addition, appropriations acts in recent years have required states to use minimum percentages of their allotted SRF grants to provide additional subsidization.
Final full-year appropriations were enacted as part of the Consolidated Appropriations Act, FY2019 (P.L. 116-6), on February 15, 2019. The act provided $1.694 billion for the CWSRF and $1.163 billion for the DWSRF program, nearly identical to the FY2018 appropriations. The FY0219 act provided $68 million for the WIFIA program, a $5 million increase from the FY2018 appropriation.
Compared to the FY2019 appropriation levels, the Trump Administration's FY2020 budget request proposes to decrease the appropriations for the CWSRF, DWSRF, and WIFIA programs by 34%, 26%, and 63%, respectively.