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Blogger | Water Quality Roundup: Results of Monitoring |
No contaminants were detected at levels that violated Federal drinking water standards. However, some contaminants were detected in trace amounts that were below legal limits. The following table shows the contaminants that were detected in trace amounts last year. (Some contaminants are sampled less frequently than once per year; as a result, not all contaminants were sampled in 2010. If any of these contaminants were detected the last time they were sampled, they are included in the table along with the date that the detection occurred.)
Results of 2010 Water Quality Analyses :
*This is the value used to determine compliance with Federal standards. It sometimes is the highest value detected and sometimes is an average of all the detected values. If it is an average, it may contain sampling results from the previous year. **Cryptosporidium monitoring was conducted on the untreated raw water entering the Water Treatment Plant, a one-time assessment required by EPA and MDH. Results of Chlorine Analyses:
Results of Turbidity Analyses:Turbidity is a measure of the clarity of water. We monitor it because it is a good indicator of the effectiveness of our filtration system. The percentage of Total Organic Carbon (TOC) removal was measured each month. The system met all the TOC removal requirements set by the U.S. EPA. In 2010, Moorhead's tap water had an average turbidity of 0.038 NTU.
*****Lowest monthly percentage of samples meeting the turbidity limits. Results of Sodium and Sulfate Analyses:Some contaminants do not have MCLs established for them. These unregulated contaminants are assessed using state standards known as health risk limits to determine if they pose a threat to human health. If unacceptable levels of an unregulated contaminant are found, the response is the same as if an MCL has been exceeded; the water system must inform its customers and take other corrective actions. The following table shows the unregulated contaminants that were detected:
Monitoring for unregulated contaminants as required by the U. S. Environmental Protection Agency rules (40 CFR 141.40) was conducted in 2009. Results of the unregulated contaminant monitoring are available upon request from Cindy Swanson, Minnesota Department of Health, at 651/201.4656. Results of Lead and Copper Analyses:If present, levated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. Moorhead Public Service is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.
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