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  2. Swimming pool sanitation - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_sanitation

    Other filter media that have been introduced to the residential swimming pool market since 1970 include sand particles and paper type cartridge filters of 50 to 150 square feet (4.6 to 13.9 m 2) filter area arranged in a tightly packed 12" diameter x 24" long (300 mm x 600 mm) accordion-like circular cartridge. These units can be 'daisy-chained ...

  3. Boring (earth) - Wikipedia

    en.wikipedia.org/wiki/Boring_(earth)

    Soft ground drilling can be undertaken using a rotary auger or wash boring techniques, while rock drilling often use methods such as NMLC which allow for recovery of a core of material which can be examined to determine the strength, degree of weathering, understanding of any how intact the rock is and identify any discontinuities or other ...

  4. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Conditioning of hard water from Tempe, Arizona with different types of treatment methods [19] [20] Treatment Normalized scale formation No treatment 1.00 Electromagnetic Water Treatment 0.57 Electrically Induced Precipitation 0.50 Capacitive Deionization 0.17 Ion exchange 0.06 Template Assisted Crystallization 0.04

  5. Will Texas run out of groundwater? Experts explain how ... - AOL

    www.aol.com/news/texas-run-groundwater-experts...

    In Texas, there are 98 of these districts, covering nearly 70% of the state, according to the Texas Water Development Board. The Upper Trinity Groundwater Conservation District has the following ...

  6. Salt water chlorination - Wikipedia

    en.wikipedia.org/wiki/Salt_water_chlorination

    Salt water chlorination is a process that uses dissolved salt (1000–4000 ppm or 1–4 g/L) for the chlorination of swimming pools and hot tubs.The chlorine generator (also known as salt cell, salt generator, salt chlorinator, or SWG) uses electrolysis in the presence of dissolved salt to produce chlorine gas or its dissolved forms, hypochlorous acid and sodium hypochlorite, which are already ...

  7. Swimming pool service technician - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_service...

    This swimming pool service technician is using a pool skimmer to remove debris from a courtyard fountain at an apartment complex in Tulsa, Oklahoma. A swimming pool service technician is a person who maintains swimming pools , including keeping the water clean and safe by fixing pool equipment such as pumps, motors and water filters.

  8. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Groundwater: The water emerging from some deep ground water may have fallen as rain many tens, hundreds, or thousands of years ago. Soil and rock layers naturally filter the ground water to a high degree of clarity and often, it does not require additional treatment besides adding chlorine or chloramines as secondary disinfectants.

  9. Here’s who’s running in the Democratic primary for Texas ...

    www.aol.com/news/running-democratic-primary...

    Please include contact info or link: Joe Pool Campaign 300 Creek Road Dripping Springs Texas 78620 joepool@poolforjustice.com Occupation: 428th Judicial District Judge for Hays County Texas

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