the federal government plays a limited role. As noted in the previous section on federal regulations, the CWA and CZMA provide financing for states to implement NPS programs, and those NPS programs have taken a variety of forms. The majority of state plans rely on education and technical assistance, including the development of BMPs, to reduce NPS water pollution. Local governments also have an important role to play in NPS regulation. Local municipality, water conservation districts and other entities with land management responsibility provide planning, zoning, and technical and informational assistance to control NPS pollution. While the approaches states and local governments have taken to regulating NPS water pollution are perhaps too numerous to count, a survey of a few state approaches can provide insight on common NPS implementation plans. Indiana Indiana uses a common approach to address NPS pollution known as the watershed approach. A watershed includes "the total geographic area that drains storm water (and pollutants) to a particular stream, lake, aquifer, or other water body." The watershed approach to addressing NPS water pollution attempts to address all the relevant water bodies holistically in the context of their watershed while also considering all the potential sources of pollution within a watershed. The Indiana Department of Environmental Management (IDEM) was required under section 303(d) of the CWA to create a list of impaired waters for which TMDLs would be required. IDEM's NPS and watershed efforts concentrate on these impaired water resources. Implementation of TMDLs is managed by local watershed organizations, and NPS pollution controls are only voluntary. Watershed groups use funding from IDEM to create incentive programs for the use of BMPs, as well as provide public information and education. Funding sources for NPS pollution regulation in Indiana include CWA 319(h) grants; CWA 205(j) grants; grants from the Environmental Quality Incentives Program of the Food, Conservation, and Energy Act of 2008; and a wide variety of foundations and individual fundraising. Zoning ordinances may also be structured in a way that limits NPS water pollution. California California's NPS plan requires coordination from 28 different state agencies, which reveals the institutional challenges that NPS regulation may encounter. The California State Water Resources Control Board's Division of Water Quality and the California Coastal Commission (CCC) designed California's NPS plan pursuant to the CWA and the Federal Coastal Zone Act Reauthorization Amendments of 1990. California's NPS plan for 1998–2013 states that California, like