Major causes of nonsupport were suspended solids, fecal coliform bacteria, dissolved solids, oxidizable organic wastes, and pesticides. Impairment of streams was attributed to agriculture, habitat modification, natural sources, resource extraction, hydromodification, and ground water withdrawal. Nonpoint source effects were more widespread than point source effects. The major causes of impairment were pesticides, suspended solids, eutrophication, and turbidity. Sources of impairment include agriculture, municipal point sources, natural sources, and hydromodification.
Nitrate contamination is of major concern.
These exceedances were attributed primarily to human activities, natural conditions, or both. The major sources of contamination included industrial facilities, spills, leaking or overflowing lagoons, leaking storage tanks, mineral extraction activities, agricultural operations, and, in some areas, natural constituents. Programs to Restore Water Quality A Local Environmental Protection Program provides financial assistance to 97 of the State s 105 counties to develop and implement a comprehensive plan for protection of the local environment. The Point Source Pollution Program regulates wastewater treatment systems of municipal, Federal, industrial, and commercial sewage facilities, storm water, and certain larger livestock operations. Smaller livestock facilities and other diffuse sources of pollutants are addressed by the Non Point Source Control Program.