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2. Upper Occoquan Sewage Authority - Wikipedia

   en.wikipedia.org/wiki/Upper_Occoquan_Sewage...

   In 1978, the UOSA Regional Water Reclamation Plant, located on 470 acres (1.9 km 2) in western Fairfax County, commenced operations and replaced eleven small secondary treatment plants in the region. Since that time, water quality in the Occoquan Reservoir has steadily improved and the reliable, high-quality effluent produced by UOSA has ...

3. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

4. Rheem Manufacturing Company - Wikipedia

   en.wikipedia.org/wiki/Rheem_Manufacturing_Company

   One of the most significant events came in 1956 with the introduction of "Rheemaire" central air conditioning and heating systems for homes. This eventually became one of the company's primary business areas. [12] [16] In 1968 [17] a plant was opened in Bergum (Burgum in Frisian) in the Netherlands. The plant was successful but had to close its ...

5. Virginia government grinds to a halt as hospitals, residents ...

   www.aol.com/news/virginia-government-grinds-halt...

   A water treatment plant failure threw North America’s oldest continuous lawmaking body into crisis this week, as lawmakers were effectively shut out of the Virginia State Capitol for safety reasons.

6. Dealkalization of water - Wikipedia

   en.wikipedia.org/wiki/Dealkalization_of_water

   Chloride cycle dealkalizers operate similar to sodium cycle cation water softeners. Like water softeners, dealkalizers contain ion-exchange resins that are regenerated with a concentrated salt solution - NaCl. In the case of a water softener, the cation exchange resin is exchanging sodium (the Na + ion of NaCl) for hardness minerals such as ...

7. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   Earlier, the waste disposal system had consisted of collecting waste and dumping it on the ground or into a river. Eventually the development of separate, underground water and sewage systems eliminated open sewage ditches and cesspools. In post-classical Kilwa the wealthy enjoyed indoor plumbing in their stone homes. [16] [17]