Field Office Compliance - Assistance

Assistance ID - 129791

Osceola Water Works - 310338248

2320 WEST CLAY STREET Osceola, IA 50213

Clarke County

FO 5

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File Name	File Type	File Date	Note

Comments

Date	Comment	Commenter
11/16/2023	Re: Question of higher Chlorine Levels Gastineau, Janet <janet.gastineau@dnr.iowa.gov> 11:18?AM (0 minutes ago) to osceolawaterworks19 Measuring a 4.0 mg/L total residual chlorine is not a violation of any sort. Compliance with 4.0 mg/L is determined quarterly for PWS based on the MRDL. The 4.0 mg/L only applies in the DS, not the source/entry point. Now, occasionally we have chlorine overfeeds and at that point we recommend flushing the DS, for example, but it depends entirely on the situation. I hope that helps. On Thu, Nov 16, 2023 at 11:15?AM <osceolawaterworks19@gmail.com> wrote: Hello Janet. I’m working on a protocol for our operators, and was wanting to know what needs to take place if total finished chlorine reaches 4.0. We know the protocol when it gets to 1.5 but, I’m not sure what is needed to take place if we hit the higher limit. Any information you can help me with or resource referrals would be greatly appreciated. Thank you for your time. Cory Gallup Osceola Waterworks Water Plant Foreman 641-414-1497	JANET GASTINEAU

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