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The Safe Drinking Water Act (SDWA) is the primary federal law in the United States intended to ensure safe drinking water for the public. [3] Pursuant to the act, the Environmental Protection Agency (EPA) is required to set standards for drinking water quality and oversee all states, localities, and water suppliers that implement the standards.
Perchlorate is one of only four of the seventy chemicals for which EPA has set public health goals that have a safety factor of 10, rather than the usual safety factors of 100 or 1000. [ 91 ] [ 94 ] : 21 In 2004 eight states had non-binding advisories for perchlorate in drinking water, ranging from 1 to 18 ppb.
Perchlorate salts are typically manufactured through the process of electrolysis, which involves oxidizing aqueous solutions of corresponding chlorates.This technique is commonly employed in the production of sodium perchlorate, which finds widespread use as a key ingredient in rocket fuel. [5]
These solids consist of the perchlorate anion linked via hydrogen bonds to H 2 O and H 3 O + centers. [9] An example is hydronium perchlorate. Perchloric acid forms an azeotrope with water, consisting of about 72.5% perchloric acid. This form of the acid is stable indefinitely and is commercially available. Such solutions are hygroscopic. Thus ...
The EPA finalized limits for several types of PFAS last month. The result doesn’t necessarily mean Mount Rushmore is out of compliance with the EPA’s new rule, which will be implemented in phases.
More than 200 chemical plants nationwide will be required to reduce toxic emissions that are likely to cause cancer under a new rule issued Tuesday by the Environmental Protection Agency. The rule ...
For example, in 2002 the EPA completed its draft toxicological review of perchlorate and proposed an RfD of 0.00003 milligrams per kilogram per day (mg/kg/day) based primarily on studies that identified neurodevelopmental deficits in rat pups. These deficits were linked to maternal exposure to perchlorate.
That would put this exposure at more than 80% of the EPA’s limit. Here’s the thing: The math was incorrect. Sixty multiplied by 7,000 is actually 420,000, not 42,000. As a result, the exposure ...