Strong Polluted Runoff Controls
The 1996 National Water Quality Inventory, which summarizes state surveys of water quality in the United States, indicates that about 40 percent of surveyed U.S. waterbodies are impaired by pollution, with the leading source being polluted runoff. About 70 percent of impaired rivers and streams and 49 percent of lakes are impaired by runoff or discharges from agriculture. While the nation has begun to make progress in controlling polluted runoff, meeting clean water goals in the next decade and beyond will require picking up the pace of this effort. The development and implementation of plans to restore water quality on a watershed basis
will result in a significant
reduction of polluted runoff. Chapter III of this Action Plan presents a unified watershed
assessment and restoration approach
to pull together the many state, tribal, and federal programs that can help quicken the pace of
reducing polluted runoff. In
addition to these programs targeted to specific problem areas, more needs to be done to prevent
polluted runoff and to help
ensure that waters that are now meeting clean water goals continue to do so.
Strengthen State and Tribal Polluted Runoff Programs States and authorized tribes now implement general programs to reduce polluted runoff under section 319 of the Clean Water Act. These programs are successfully preventing polluted runoff from a wide range of existing facilities and locations and are helping to ensure that new facilities and projects are designed to minimize polluted runoff impacts. Actions to improve the effectiveness of these programs are described in the following text. Help States and Tribes Implement Strengthened Nonpoint Source ProgramsThe Clean Water Act provides for broad state and tribal programs to address polluted runoff. Section 319 of the Act identifies key elements of polluted runoff programs and authorizes grants to states and tribes to develop and implement the programs. EPA currently provides grants to states and authorized tribes of about $100 million; states and tribes provide a 40-percent match of these federal funds.In May 1996, EPA and the states reached agreement to upgrade section 319 programs to prevent polluted runoff to address nine key elements, including, among others, establishing short- and long-term goals and objectives; strengthening working partnerships with all appropriate public- and private-sector groups; focusing on impaired waters and waters threatened by new sources and activities; implementing better-focused programs to address these problems; working to promote consistency of federal programs among state and tribal nonpoint source programs; and using monitoring and feedback loops to ensure continued progress. One state has developed program upgrades in all nine key areas; many other states are working toward that goal. An essential feature of effective nonpoint source programs will be the coordination and
integration with other closely
related state- and tribal-managed water quality programs, such as coastal nonpoint pollution
control programs under section
6217 of the Coastal Zone Act Reauthorization Amendments of 1990, source water protection
programs under the Safe Drinking
Water Act, and total maximum daily load programs under section 303(d) of the Clean Water Act.
The strengthening of
partnerships as described above will ensure that all appropriate programs, authorities, and
resources are used effectively and
consistently to solve shared problems.
Improve Anti-degradation Policies to Reduce Polluted RunoffEPA's water quality standards regulations require that each state and tribe adopt an anti-degradation policy to maintain and protect existing levels of water quality as part of their water quality standards. Where a state or tribe issues a discharge permit or takes other actions related to water bodies with good water quality, such actions must not increase water pollution levels.States and tribes may, however, allow some increase in water pollution levels, but not to such an extent that water quality standards are violated, where such increased pollution is "necessary to accommodate important economic or social development." In allowing any degradation of waters with good water quality, the regulations require states and tribes to ensure that "all cost-effective and reasonable best management practices" be applied to reduce polluted runoff. EPA has not defined this requirement for implementation of polluted runoff controls in
detail, and many states have not
developed procedures to ensure compliance with this regulation.
Improve State and Tribal Enforceable AuthoritiesAn important component of an effective state program to control polluted runoff is enforceable authority that can be used to ensure that pollution controls are actually implemented if voluntary efforts fail. States, EPA, and NOAA have developed considerable experience with state enforceable policies and mechanisms for polluted runoff in working with coastal states to develop coastal nonpoint pollution control programs. The Environmental Law Institute recently completed a study concluding that nearly all states have some general authority to deal with nonpoint source discharges that can be shown to result in water pollution. However, the legal reach and practical utility of these authorities vary widely. There is even wider variability with respect to state authorities that specifically address particular priority classes of sources (e.g., agriculture, forestry or development) or priority watersheds.
Increase Commitment of Clean Water Loan Funds to Polluted RunoffThe 1987 amendments to the Clean Water Act created State Revolving Loan Funds to finance the construction of sewage treatment and other water pollution control facilities. EPA provides annual grants to states to capitalize the loan funds, and states provide a 20-percent match. States then make low-interest loans to communities for construction of water pollution control facilities. Money repaid to the State Revolving Loan Fund is then loaned to other communities to support additional projects.The total value of the state funds is about $25 billion, making over $2 billion in new loans each year, drawing on both repayments of existing loans and capitalization grants from the federal government. Although traditionally used to finance sewage treatment facilities, loans are used increasingly for projects to prevent polluted runoff. About three percent of the total loans made to date are for polluted runoff projects. States indicate that some of the reasons for the small number of loans for polluted runoff projects are that sewage treatment projects have a higher priority than polluted runoff projects, that the risk of loan default is higher for polluted runoff control projects, and that potential loan recipients usually prefer grants rather than loans. The investment of state clean water loan funds in polluted runoff control projects could be
increased if EPA helped states
identify ways to reduce risks of loans for polluted runoff projects, defined ways to identify
polluted runoff control projects in the
planning process, and set clear goals for increasing investments in these projects. EPA will work
with states and territories to
ensure that state loan funds are used for the highest priority polluted runoff projects that meet the
programs' financial criteria.
![]() Algae blooms like this one near Shelburne, Vermont are not as common as they were in the 1970's due to phosphorus detergent bans, phosphorus reductions from municipal wastewater treatment plants, and nonpoint source pollution control efforts.
Reduce Nutrient Over-enrichment Nutrients, in the appropriate amounts, are essential to the health and continued functioning of aquatic ecosystems. Excessive nutrient loadings will, however, result in excessive growth of macrophytes or phytoplankton and potentially harmful algal blooms (HAB), leading to oxygen declines, imbalance of aquatic species, public health risks, and a general decline of the aquatic resource. Nutrient over-enrichment has also been strongly linked to the large hypoxic zone in the Gulf of Mexico and to recent outbreaks of Pfiesteria along the mid-Atlantic Coast. State water quality reports indicate that over-enrichment of waters by nutrients (nitrogen and phosphorus) is the biggest overall source of impairment of the nation's rivers and streams, lakes and reservoirs, and estuaries. In the 1996 National Water Quality Inventory, states reported that 40 percent of surveyed rivers, 51 percent of surveyed lakes, and 57 percent of surveyed estuaries were impaired by nutrient enrichment. Agriculture is the most widespread source of these impairments, followed by municipal sewage treatment plants, urban runoff and storm sewers, and various other nonpoint pollution sources, including air deposition. Define Nutrient Reduction GoalsAlthough nutrient over-enrichment is clearly a major challenge for the nation's waters, the assessment of the seriousness and extent of the problem is often based on subjective criteria that can result in widely varying assessments. Research to improve the basis for understanding and assessing nutrient over-enrichment problems is critical to better control of nutrient levels in waters and to meeting the nation's clean water goals.EPA is developing a strategy to establish an objective, scientifically sound basis for assessing nutrient over- enrichment problems. Specifically, EPA will develop nutrient criteria -- numerical ranges for acceptable levels of nutrients (i.e., nitrogen and phosphorus) in water. Unlike other criteria that EPA has developed, nutrient criteria will be established as a menu of different numeric values based on the type of water body (i.e., river, estuary, lake) and the region of the country in which the water is located. It is vital that this work be done to provide the technical basis for pollution reduction plans. EPA will develop nutrient criteria for the various water body types and ecoregions of the
country by the year 2000. Under
the Clean Water Act, states use pollutant criteria established by EPA as the basis for adopting
water quality standards. Within
three years of EPA issuance of applicable criteria, all states and tribes with water quality
standards should have adopted water
quality standards for nutrients. Where a state or tribe fails to adopt a water quality standard for
nutrients within the three-year
period, EPA will begin to promulgate the nutrient criteria appropriate to the region and water
body type. When promulgated,
the EPA standard would apply until a state or tribe adopts, and EPA approves, a revised standard.
Assess and Reduce Air Deposition of NitrogenNitrogen gas makes up 78 percent of the atmosphere. However, bio-available nitrogen causes many health and environmental problems. Nitrogen oxides in the air can cause deep lung irritation and decrease lung function in children who are active outdoors and can contribute to the formation of ground-level ozone. Bio-available nitrogen has also become a major concern in many water bodies because it can acidify lakes, cause algal blooms, lower dissolved oxygen, and kill fish.More than 23 million tons of nitrogen are emitted to the atmosphere each year. About half of
the nitrogen compounds
emitted from fossil-fuel-burning plants, vehicles, and other sources in the United States are
deposited on U.S. watersheds.
Nitrogen compounds are released from a variety of other sources, including application of
fertilizers and manure, and publicly
owned treatment works. EPA has moved, under the Clean Air Act, to reduce emissions of
nitrogen oxides (NOx) from new
vehicles and electric power plants since the 1970s. EPA has proposed NOx emissions budgets
for 22 states and the District
of Columbia to reduce regional NOx emissions in the eastern United States. As the states take
action under their plans to meet
the new ozone and particulate standards, NOx emissions will be further reduced.
Improve Subsurface Sewage DisposalDecentralized wastewater systems currently serve about 25 percent of the U.S. population and approximately 37 percent of new development. The vast majority of these systems are conventional onsite wastewater systems (or sometimes cesspools).States report that these wastewater systems have failed because of inappropriate siting or
design or inadequate long-term
maintenance and that septic tanks constitute the third most common source of ground water
contamination. Onsite systems can
also cause surface water quality problems. Improved management of these sources is essential to
achieving water quality goals.
Expand Clean Water Act Permit Controls The Clean Water Act provides that discharges of pollutants from a pipe or other point source are required to have a permit that limits the discharge as necessary to attain the water quality standard for the receiving waters. For many years, EPA and states worked to develop and issue permits to large point source dischargers, such as sewage treatment plants and industrial facilities. Recently, additional attention has been focused on point sources that discharge polluted runoff from urban areas and large facilities such as confined animal feeding operations. These permits are expected to make a significant contribution to reducing the water quality impacts of polluted runoff. Expand Control of Storm Water Runoff from Cities and Construction SitesStorm water runoff is one of the leading remaining causes of water quality problems in the United States. On December 16, 1997, EPA proposed to expand controls of storm water runoff to cover smaller cities (with populations under 100,000) and for small construction sites (under five acres). This proposal builds on the storm water Phase I rule promulgated in 1990, which relies on Clean Water Act discharge permits to address runoff from cities with populations of more than 100,000 and from construction sites greater than five acres. The proposed Phase II storm water regulation provides a flexible approach that builds on the programs that are already in place in many areas. The proposal recommends ways to adjust coverage as appropriate to protect water quality in a watershed and suggests how to give incentives for smart growth.![]() Stormwater outflow.
The Phase II storm water regulation promotes the use of best management practices, such as preventing illicit sewage connections and providing information to the public about pollution prevention measures they can undertake to minimize storm water impacts as part of a municipal storm water program. For construction, best management practices might include silt fencing and sediment ponds to trap storm water runoff. The benefits of controlling storm water runoff are numerous. The reduction in flow and
movement of sediment reduces
stream bank erosion, stream channeling and modifications to stream habitat from shallower
waters. Sediment reduction will
also greatly reduce the cost of dredging reservoirs and navigation channels and will generate
recreation benefits, such as
increased fishing and swimming opportunities and protection of spawning grounds.
![]() Polluted runoff associated with rapid growth in many American cities presents a challenge. Pictured here is Portland, Oregon. Substantially Reduce Pollution from Animal Feeding OperationsThere are approximately 450,000 animal feeding operations (AFOs) throughout the United States. AFOs can range from small livestock production facilities with few animals to extremely large production facilities generating animal wastes equivalent in magnitude to that produced by a medium-sized city. Improperly managed AFOs, either singly, or in combination with other AFOs or sources in a watershed, have been shown to cause significant environmental and public health concerns, including nutrient enrichment of surface and ground waters, contamination of water supplies, fish kills, and odors.Of the 450,000 AFOs, only a small percentage currently have discharge permits under the Clean Water Act. Research, technical assistance, voluntary installation of best management practices, and educational programs have contributed to significant progress, but have not adequately addressed the scope of environmental impacts. EPA has developed a draft AFO Strategy that outlines steps that it will take to minimize the
environmental and public
health effects of AFOs. The EPA draft strategy calls for improving data collection; expanding
research on effects and control
measures; increasing compliance assistance and enforcement with respect to applicable
environmental laws and regulations;
significantly expanding the number of Clean Water Act permits issued for CAFOs (with
emphasis on the largest, unpermitted
facilities); ensuring that permits address such activities as land application of animal waste;
revising outdated regulations; and
creating incentives for voluntary implementation of measures to protect the environment and
public health.
A broader strategy that covers key activities for both EPA and USDA will also be needed. EPA and USDA agree on the need for a joint, unified strategy to refocus the federal government's technical, financial, and programmatic efforts to more effectively address the environmental and public health issues associated with AFOs. The unified EPA/USDA National AFO Strategy will include the following key elements, in addition to outlining the roles of involved agencies:
Develop Incentives For Reducing Polluted Runoff Federal agencies will work with diverse stakeholders to develop creative, new approaches to reducing polluted runoff, including expanding recognition of the benefits of "smart growth" policies and considering innovative tax policies for preventing water pollution and enhancing natural resources. Smart GrowthMany state, tribes, and local governments and community organizations are engaging in efforts to create more sustainable communities and to avoid development that can aggravate polluted runoff and related pollution problems that undermine their quality of life. Development patterns can needlessly generate excessive pollution control costs and discourage the redevelopment and re-population of vital urban areas. Maryland and Oregon have already established groundbreaking policies to ensure "smart growth."
Tax Incentives to Encourage Improved StewardshipTax incentives can be a powerful method for influencing private-sector actions for pollution prevention and improving natural resource management.Implementing tax incentives related to water quality and natural resource enhancement would require amendments to the tax code. Several states have developed tax incentives for landowners to develop farm conservation plans. Other states are considering tax incentives that would encourage "smart growth" practices, support the development of easements for critical lands such as wetlands and lands providing buffers for streams and riparian areas, and define opportunities for exchanges of "debt for easement" with participants of USDA and other federal lending programs. National water quality is heavily influenced by the character and management of private lands. Private forest lands comprise a significant share of critical watersheds. Trends in land ownership and development are causing the loss of critical watershed functions of substantial amounts of these lands. The current tax code can be a disincentive to hold these as forested lands. Tax incentives also can help landowners invest in best management practices that maintain and enhance water quality. Over the next several years, it is likely that Congress will consider a range of amendments to
the tax code. For Congress to
consider tax incentives related to water pollution control and natural resource enhancement, more
work must be done to identify
the full range of possible measures, explore the effectiveness of measures that now exist at the
state level, and evaluate relative
costs and environmental and public health benefits of various proposals.
http://water.usgs.gov/owq/cleanwater/action/c2c.html |