特定污染源的任何排污，除了许可的之外，都被宣布为违法。
Any discharges by point sources, except in compliance with the limitations imposed in a permit, were declared unlawful.
1987年的修正案中，最理想的水质规定涉及到特定污染源的污染，也就是说来自农业和都市区雨水的污染。
The most ambitious water quality provision of the 1987 Amendments relates to non-point source pollution, that is, run-off from agricultural and urban areas.
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