The late 19th century saw a massive influx of population into American cities, driven by industrial growth. This resulted in severe air and noise pollution from factories, locomotives, and other sources. The problem was not just a nuisance but posed a serious health risk to urban residents. This situation created a market for inventions like Walton's that could mitigate pollution.

While the exact extent of the implementation of Walton's inventions is not well documented, the patents demonstrate a clear effort to address a significant environmental problem. Depending on factors like cost, effectiveness, and industry regulations, her designs may have been adopted by railroad companies or incorporated into locomotive manufacturing. Even if the inventions weren't widely implemented, they contributed to the growing awareness of air pollution and the need for technological solutions. Further research is needed to determine the extent of her influence on the reduction of urban pollution.

Although specific information about the long-term fate of her inventions is sparse, Mary Walton's patents serve as an early example of inventors focused on environmental solutions. Her work paved the way for future generations of innovators who tackled air and noise pollution. Her inventions highlight the early recognition of the negative impacts of industrialization and the need for technological remedies.