Vesconite轴承希望成为全球计划的一部分，以减少饮用水的铅暴露。它产生耐腐蚀化学品的产品（这是将铅浸入水系统中的铅浸出所必需的）。它还为泵和水系统提供无铅轴承材料。
燃料和油漆是许多国家最重要的铅暴露来源。但是，随着铅被移除或可能从这些来源中移除，饮用水已成为可控铅暴露的一部分。全球各国政府越来越介绍了对水系统领先的关注，并确定控制指南和规定。
A staggered, multifaceted approach towards getting rid of lead in water systems is required due to the legacy use of lead in water systems.
For governments, utilities, and households, preventing exposure to lead can mean:-
•采用化学腐蚀措施，降低饮用水中铅的水平;
• Flushing pipework where water has been standing for long periods in a lead pipe;
• Replacing old lead service lines; and
•确保所有新的管道和配件都无铅，焊料是无铅品种。
化学腐蚀剂量
对于许多国家来说，由于成本，铅服务线更换是令人禁止的。例如，与英国有这种情况，例如，估计铅管道的成本估计在8-10亿英镑之间
需要在长期更换铅服务线和组件，但短期和中期策略是通过引入腐蚀抑制剂，最常见的正磷酸酯来降低系统中铅溶解的可能性。
Vesconite can play a role in a corrosion-reduction strategy to combat lead exposure. Its bearing products are resistant to most chemicals and will not degrade in water systems. At the same time, Vesconite has the benefit of being lead-free and will not introduce additional lead into the system.
Orthophosphates and Vesconite products work particularly well where organic material is removed from water systems, since orthophosphates may increase bacterial growth on some plastics.
Installation and repair of water systems
一些国家推出了影响水公用事业安装和维修的立法。这确保了水系统中没有额外的铅，并且系统中的铅数量减少。
Such is the case with the US’s Safe Drinking Water Act which prohibits the “use of any pipe, any pipe or plumbing fitting or fixture, any solder, or any flux, after June 1986, in the installation or repair of (i) any public water system; or (ii) any plumbing in a residential or non-residential facility providing water for human consumption, that is not lead-free”.2
For utilities implementing this policy, Vesconite’s Hilube bearing material has NSF61 approval for use in potable water applications.
This certification should provide comfort and assurance to utilities that need to abide by the US’s Environmental Protection Agency’s (EPA’s) final regulation on the “Use of Lead-Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water”. The September 2020 regulation requires that manufacturers and importers of components used in drinking water systems certify their products have met the requirements of the regulation within three years of the final rule publication date.3
Replacement of lead service lines and components
Strategies on whether lead service lines and lead components must be replaced entirely or partially differ between and within countries. For instance, Southern Germany prohibited lead pipes more than 100 years ago, while Northern Germany, which continued to use lead piping into the 1970s, is currently focusing on getting rid of lead service lines.4
由于管道是水系统铅污染的主要原因，在更换铅管道时，似乎有一个全球兴趣的兴趣。水系统的其他部分，而它们可能不是优先级铅曝光源，也没有被忽略。焊料，配件（包括具有高铅含量的合金配件）和服务连接，有助于采用自来水，仍然是世界卫生组织的关注，如其饮用水质量指南所示。
例如，含铅青铜被视为泵和水系统中包含的轴承和叶轮的问题。锌，锡或铝等合金有时会更换铅 - 这种替代物将有利于引入这种产品的国家的健康使这些合金往往受到延长时间的氯给药的不利影响。然而，不应导致无铅，耐氯，持久的Vesconite轴承材料取代了这些材料，它们将降低维护时间和成本，同时还原铅暴露。
Lead in drinking water
不同的国家有设置允许quantities of lead in drinking water. However, the lower the levels the better. There are no safe levels of lead, say experts. This statement is notably true for children who can experience behavior and learning problems, lower IQ and hyperactivity, slowed growth, hearing problems, anemia, and, in rare cases, seizures, comas, or death with even low levels of lead in the blood.6
笔记：
1) Chartered Institution of Water and Environmental Management, Policy Position Paper, Lead in Drinking Water, https://www.ciwem.org/assets/pdf/Policy/Policy%20Position%20Statement/Lead-in-drinking-water.pdf
2) the United States Environmental Protection Agency, Use of Lead-Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water, Final “Lead-Free” Rule, https://www.epa.gov/sdwa/use-lead-free-pipes-fittings-fixtures-solder-and-flux-drinking-water
3) the United States Environmental Protection Agency, Use of Lead-Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water, Final “Lead-Free” Rule, https://www.epa.gov/sdwa/use-lead-free-pipes-fittings-fixtures-solder-and-flux-drinking-water
4) “Germany aims to rid drinking water of lead”. Where I come from – Kampaqne (DW) The people who make DW unique Where I come from – DW journalists share their personal stories. Deutsche Welle. 12 March 2013. Retrieved 13 October 2019.
5) Dashner, B, 2011, Zero Lead Zone in Water Quality Products,https://www.wqpmag.com/zero-lead-zone
6) the United States Environmental Protection Agency, Basic Information about Lead in Drinking Water, https://www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water
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