Field Office Compliance - Assistance

Assistance ID - 76149
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
2/3/2015 From: Gastineau, Janet [DNR] Sent: Tuesday, February 03, 2015 6:35 AM To: 'Corrigan, Ted' Cc: Lynam, Anne [DNR]; Schwiete, Becky [DNR] Subject: RE: Bottled Water Advisory if nitrates are over 7 I would talk to Anne and Becky as they have more statewide experience. Protocol is written as follows for staff: 1. For a known bacteria problem: Ensure the water supply is issuing a boil water warning. Note systems with nitrate levels greater than 7 mg/L or nitrite levels greater than 0.7 mg/L should not issue a boil water warning since boiling will raise the nitrate or nitrite levels through concentration. These systems must issue a use alternative water source warning, which may include the use of bottled water (sometimes used for a factory or school), or a temporary closure of the system (i.e., restaurant or bar). For pressure loss or main break: Systems with nitrate levels above 7 mg/L, , or nitrite levels above 0.7 mg/L, should use a bottled water advisory due to the potential to increase the nitrate levels with boiling. I had a call from a lady in Pleasant Hill last week wondering about this. She was not being contentious, just looking for some facts. From: Corrigan, Ted [mailto:[email protected]] Sent: Monday, February 02, 2015 5:47 PM To: Gastineau, Janet [DNR] Subject: Bottled Water Advisory if nitrates are over 7 Janet, Who can I contact to get the official requirements related to issuing a bottled water advisory instead of a boil advisory when nitrate concentrations are over 7 mg/L? Thanks. Ted TED CORRIGAN | Chief Operating Officer Des Moines Water Works | WATER YOU CAN TRUST FOR LIFE 2201 George Flagg Parkway | Des Moines, Iowa 50321 | www.dmww.com Phone: (515) 283-8751 | fax: (515) 283-8723 | e-mail: [email protected] JANET GASTINEAU
State of Iowa DNR Home Site Policy
Leading Iowans in caring for our natural resources
Version: 2.3.1.23706
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