Water Quality - 2018

Milford Water Department Test Results

Contaminant

Viola- tion Y/N

Level Detected

Units of Measure- ment

MC LG

MCL

Likely Source of Contamination

Radioactive Contaminants: Gross Alpha Test results Yr. 2015

N

Range = ND – 16.2 Highest detect = 16.2 Range = ND – 4.0 Highest detect = 4.0

pCi/1

0

15

Erosion of natural deposits

Combined Radium 228 & 226 Test results Yr. 2015 Uranium Test results Yr. 2015

N

pCi/1

0

5

Erosion of natural deposits

N

Range = ND – 7.3 Highest detect = 7.3

Ppb

0

30

Erosion of natural deposits

Inorganic Contaminants: Antimony Test results Yr. 2015

N

Range = ND – 0.03 Highest detect = 0.03

Ppb

6

6

Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits Corrosion of galvanized pipes; erosion of natural deposits; discharge from metal refineries; runoff from waste batteries and paints Corrosion of household plumbing systems; erosion of natural deposits Corrosion of household plumbing systems, erosion of natural deposits Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines Leaching from ore-processing sites; discharge from electronics, glass, and drug factories Erosion of natural deposits

Arsenic Test results Yr. 2017

N

Range = 1.5 – 3.9 Highest detect = 3.9 Highest Average = 3.3

Ppb

N/A

5

Barium Test results Yr. 2015

N

Range = 0.07 – 0.23 Highest detect = 0.23

Ppm

2

2

Cadmium Test results Yr. 2015

N

Range = ND – 0.02 Highest detect = 0.02

Ppb

5

5

Copper Test results Yr. 2015 Result at 90 th Percentile Lead Test results Yr. 2015 Result at 90 th Percentile Nickel Test results Yr. 2015 Nitrate (as Nitrogen) Test results Yr. 2017

N

0.55 No samples exceeded the action level 3.4 No samples exceeded the action level Range = 0.8 – 1.4 Highest detect = 1.4

Ppm

1.3

AL=1.3

N

Ppb

0

AL=15

N

Ppb

N/A

N/a

2.5

N

Ppm

10

10

Selenium Test results Yr. 2015

N

Range = 0.9 – 2.3 Highest detect = 2.3

Ppb

50

50

Thallium Test results Yr. 2015

N

Range = ND – 0.01 Highest detect = 0.01

Ppb

0.5

2

Disinfection Byproducts: TTHM Total Trihalomethanes Test results Yr. 2017

N/A

N

Range = 3 - 7 Highest detect = 7

Ppb

80

By-product of drinking water disinfection

Regulated Disinfectants

Level Detected

MRDL

MRDLG

Chlorine Test results Yr. 2017

4.0 Ppm

4.0 Ppm

Average = 0.8 Ppm

Secondary Contaminant

Level Detected

Units of Measurement

RUL

Sodium Test results Yr. 2015

Range = 12 - 52

Ppm

50

We slightly exceeded the secondary Recommended Upper Limit (RUL) for sodium. For healthy individuals the sodium intake from water is not important, because a much greater intake of sodium takes place from salt in the diet. However, sodium levels above the Recommended Upper Limit (RUL) may be of concern to individuals on a sodium restricted diet.

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