what's the condition of the acid rain level in the U.S. today(2007)?

Answer 1

It was a big concern in the 1970s. Now global warming gets all the attention. Acid rain is still a big problem. I live in the greatlakes area and almost all lake have elevated acid levels. Power plants and car have improved emissions in the past few decades but acid rain continues to harm forests and lakes.

Answer 2

The overall goal of the Acid Rain Program is to achieve significant environmental and public health benefits through reductions in emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx)—the primary causes of acid rain. To achieve this goal at the lowest cost to society, the program employs both traditional and innovative, market-based approaches for controlling air pollution. In addition, the program encourages energy efficiency and pollution prevention.

* Basic Information
Provides a comprehensive overview of the Acid Rain Program.

* SO2 Reductions and Allowance Trading under the Acid Rain Program
Explains how reductions in SO2 emissions are to be achieved.

* NOx Reductions under the Acid Rain Program
Explains how reductions in NOx emissions are to be achieved.

* Laws and Regulations
Provides links to Title IV of the Clean Air Act which mandates control of acid deposition, as well a links to regulations issued under Title IV including permits regulation, continuous emissions monitoring, and appeal procedures.

* Guidance and Fact Sheets
Provides links to permitting guidance, emissions monitoring and reporting guidance, applicability determinations, and more.

* Program Forms
Links to a comprehensive list of Acid Rain Program forms including permitting, allowance, and others.

* Program Results
Provides links to compliance and progress reports, emissions data, and other summary reports.

Answer 3

After a considerable time spent searching I came up with this site,

http://nadp.sws.uiuc.edu/

but it only had data through 2005 for the geographic site I looked at.

The reference search turned up 64,700 possible sites. One of these may have the information you seek readily available.