Page 7 - Clinton Currents Volume XIX Issue 2 - Spring/Summer 2019
P. 7

 Spring/Summer 2019 Page 7
City of Mount Clemens Public Water System
The table below lists drinking water contaminants detected in 2018. The presence of these contaminants does not necessarily indicate the water poses a health risk. All testing was conducted in 2018, unless noted otherwise.
Regulated Contaminant
MCL
MCLG
Level Detected
Range of Detections
Sample Date
Violation Yes/No
Typical Source of Contaminant
Fluoride (ppm)
4
4
0.1
N/A
5/9/2018
No
Erosion of natural deposits from fertilizer and aluminum factories.
Bromate
10
0
1.75
1.0 – 4.0
Quarterly
No
By-product of drinking water disinfection
Combined Radium (pCi/L)
5
0
0.33
N/A
8/6/14
No
Erosion of natural deposits.
Special Monitoring
 26
5/9/2018
Erosion of natural deposits
Sodium (ppm)
 Unregulated contaminants are those for which EPA has not established drinking water standards. Monitoring helps EPA to determine where these contaminants occur and whether it needs to regulate those contaminants. The City of Mount Clemens tested a wide variety of unregulated contaminants in 2018. The unregulated contaminant tests are available to customers by contacting the Mount Clemens Utilities Department.
              2018 Turbidity - Monitoring every 4 hours at Plant Finished Water Tap
 Highest Single Measurement Can not exceed 1NTU
Lowest Monthly % of Samples Meeting Turbidity Limit of 0.3 NTU (minimum 95%)
Violation Yes/No
Major Source in Drinking Water
0.13 NTU
100%
No
Soil Runoff
 Turbidity is a measure of the cloudiness of water. We monitor it because it is a good indicator of the effectiveness of our filtration system.
Contaminant
  Test Date
 Units
 Health Goal MCLG
Allowed Level MCL
  Level Detected
Range of Detection
  Violation Yes/No
Major Source in Drinking Water
 Disinfection Residuals and Disinfection By-Products-Monitoring in Distribution Systems
 Total Trihalomethanes (TTHM)
2018
ppb
N/A
80
49
17–80
No
By-product of drinking water chlorination
Haloacetic Acids (HAA5)
2018
ppb
N/A
60
31
14–55
No
By-product of drinking water disinfectant
Disinfectant (chlorine) Residual (ppm)
2018
ppm
MCLG 4
4.0
.78
0.03 – 1.4
No
Water additive used to control microbes
                   Regulated Contaminant
 The Total Organic Carbon (TOC) removal ratio is calculated as the ratio between the actual TOC removal and the TOC removal requirements.
The TOC was measured each month and because the level was low there is No Requirement for TOC removal.
Violation Yes/No
Typical Source of Contaminant
Total Organic Carbon (ppm)
No
Erosion of natural deposits.
Microbial Contaminant
MCL
MCLG
Number Detected
Violation Yes/No
Typical Source of Contaminant
Total Coliform Bacteria
1 positive monthly sample
(5% of monthly samples positive)
0
0
In One Month
No
Naturally present in the environment
Fecal Coliform and E Coli
Routine and repeat sample total Coliform positive, and one is also fecal or E Coli positive
0
0
In Entire Year
No
Human and animal waste
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