2021 Drinking Water Report

Page 9

Drinking Water

Contaminant (Date, if sampled in previous year)

EPA’s Ideal Goal (MCLG)

EPA’s Limit (MCL)

Highest Average or Highest Single Test Result

Arsenic

0ppb

10.4ppb

6.7 ppb

Nitrate

10 ppm

10.4 ppm

Barium

2 ppm

1,2-Dichloroethane

Range of Detected Test Results

Violation

Typical Sources

0.00-6.70

NO

Erosion of natural deposits; Runoff from orchards; Runoff from glass and electornics product wates.

0.14 ppm

0.00-0.14 ppm

NO

Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of Natural deposits.

2 ppm

0.1 ppm

0.02790.1010 ppm

NO

Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

0 ppb

5 ppb

0.21 ppb

N/A

NO

Discharge from chemical and agricultural chemical factories.

Gross Alpha (2020)

0 pCi/l

15.4 pCi/l

8.9 pCi/l

N/A

NO

Erosion of natural deposits.

Combined Radium (2020)

0 pCi/l

5.4 pCi/l

4.7 pCi/l

N/A

NO

Erosion of natural deposits.

2021 Consumer Confidence Report

Inorganic and Organic Contaminants - Tested in drinking water.

Potential Health Effects and Corrective Actions (if applicable) Arsenic: Due to arsenic levels previously detected in Well #7, our system has signed an Agreement

with the MDH that the well will only be used in an emergency situation (such as for fire protection), and will not be used for drinking water.

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2021 Drinking Water Report by City of Blaine - Issuu