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  2. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...

  3. List of U.S. states by median home price - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._states_by...

    U.S. states and D.C. by median home price, February 2024 (in February 2024 dollars) [1] State rank State or territory Median home price in US$ 1 Hawaii: $839,013 2 California: $765,197 — District of Columbia: $610,548 3 Massachusetts: $596,410 4 Washington: $575,894 5 Colorado: $539,151 6 Utah: $509,433 7 New Jersey: $503,432 8 Oregon: $487,244 9

  4. Category:Water filters - Wikipedia

    en.wikipedia.org/wiki/Category:Water_filters

    This page was last edited on 31 October 2017, at 11:40 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.

  5. Clean Water Act - Wikipedia

    en.wikipedia.org/wiki/Clean_Water_Act

    The first FWPCA was enacted in 1948, but took on its modern form when completely rewritten in 1972 in an act entitled the Federal Water Pollution Control Act Amendments of 1972. [4] [1] Major changes have subsequently been introduced via amendatory legislation including the Clean Water Act of 1977 [5] and the Water Quality Act (WQA) of 1987. [6]

  6. US officials question if easing Ukraine weapons restrictions ...

    www.aol.com/news/us-officials-easing-ukraine...

    As the U.S. and Britain discuss allowing Ukraine to use Western weapons to strike deep within Russia, some U.S. officials are deeply skeptical that doing so would make a significant difference in ...

  7. Nut shell filter - Wikipedia

    en.wikipedia.org/wiki/Nut_shell_filter

    A nut shell filter is a device to remove oil from water. In the oil and gas industry , the term walnut shell filter is common since black walnuts are most often used. Typically nut shell filters are designed for loadings under 100 mg/L oil and 100 mg/L suspended solids and operate with 90–95% removal efficiency. [ 1 ]

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