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Home>Topics>>David Purkiss, NSF International

David Purkiss, NSF International

Fri, 20 Jun 2014|

Dave Purkiss discusses his ACE14 presentation "Raising the Bar for Treatment Chemicals," which outlined new requirements for tamper-evident packaging on treatment chemicals. Also discussed: establishing health effects criteria for certain chemicals.



[NOISE] Hi, I'm Angela Godwin with Water World magazine, coming to you from the show floor at ACE 14 in Boston, MA, joining me today is Dave Perkins, he's with NSF International. Dave, thank you so much for being with us. Thank you, Angela. You gave a presentation at the conference a little earlier today, talking about, water treatment chemicals and, what was the focus of that? Yeah, so, NSF, tests and certifies drinking water treatment chemicals to make sure they don't add dangerous contaminants, to water. and, there are some new requirements. And it's in the standard that we've started to implement. And so, what's, what types of requirements and what's driving those? Yeah, so one of the main requirements we;ve updated is tamper evident packaging requirements. So, this is to ensure that any container that a treatment chemical comes in. And has tamper evident packaging so that operators are aware if that package has been opened prior to their using it. And that's important to prevent contamination whether it's intentional or accidental. How big of a problem is tampering in this industry? I don't, it isn't a big problem but it is a sporadic. Problem. I think, mostly accidental. Mm-hm. We've had instances when where sometimes at a treatment facility people may think drums are empty. Mm-hm. And, you know, discard solutions in those drums and, actually, maybe it's half full of the treatment chemical that then is added to water. And that can cause contamination. Right. So there's a need to add the tamper-evident requirement. What type of chemicals are we talking about? Are these like power chemicals, liquid chemicals, certain, certain chemicals? Yeah, th, they come in all types. Mm-hm. But mo, mostly liquid chemicals. Mm-hm. Solutions of, of chemicals that are sold to treat drinking. Water. Okay great, what do, what do utilities need to know? About these new Well they need to know any package they receive, should be coming now in tamper evident packaging. it, it's been a requirement in the AWA standards for a few years. It's been a requirement in the standard 60's standard now for a year and a half. And so. You know, it's fully implemented and if we receive the [UNKNOWN] and it's not in its proper packaging, they should notify their supplier, that they need tamper evident packaging. Okay. Something else I think that, that you talked about, were house effects criteria and the establishment of those. Right. Right. Can you tell us a little bit more about that. Yes, so standard 60, which is the NSF standard of the test and certified treatment chemicals to. Sets requirements for evaluating certain types of contaminates, and certain chemicals and it sets health base thresholds for the maximum allowable levels of those contaminates. So two new contaminates that we're looking at are in Sodium Hyperchlorite. Which is a chemical that's used to chlorinate water. Sure. For disinfection, to kill bacteria. And the problem with, sodium hypochlorate is as it ages over time it can develop, decompose into a couple of contaminants, chlorate and perchlorate. And so there's steps that manufacturers can take, steps that utilities can take. To mitigate that decomposition and slow it down, so that they don't have excessive levels of these contaminants. Right, and they're really simple solutions, manufacturers can chill the product before it's packaged, and that slows down the decomposition, and when utilities receive the chemical, they should dilute it with water as much as they can, as much. Allows, and that can really ensure the chlorate and perchlorate are not contamination issues for them. Excellent. So where would you direct utilities for more information, maybe to understand what's in that standard? Certainly. They can come to the, the NSF website, which is www.nsf.org. Or they can send me an email. They had my last name Purkiss, P-U-R-K-I-S-S @nsf.org. Excellent. Well, Dave, thank you so much for your time. We certainly appreciate it. Okay, well thank you. Wish you the best of luck, thank you. Thanks. For WaterWorld Magazine, I'm Angela Godwin.