Field Office Compliance - Assistance

Assistance ID - 136582
Des Moines Water Works - 310338211
9966 Maffitt Lake Dr Cumming, IA 50061
Dallas County

FO 5

Report
File Name File Type File Date Note
Comments
12/29/2025 Casey, Nathan Mon, Dec 22, 2:32?PM (7 days ago) to me Janet, As we discussed on the phone, on December 20th, 2025, we had an upset at the McMullen Plant which caused high filter turbidities. We had several high individual filter turbidities, but the plant operated as it should and shut the filters down prior to two consecutive high measurements. You’ll see in December MOR’s that we have several filters with turbidities over 1 but the next highest turbidity is much lower. Because we got the plant shut down on early, finished turbidities didn’t get over 0.3 NTU. JANET GASTINEAU
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