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Community Data Summary Results

On this page, you will find a data summary of water test results completed in the City of Flint as part of this program. Water samples were collected throughout the community from multiple sampling events.

Select the sampling event you are interested in reviewing. Each sampling event will show a data summary table with the most recent test results data that has been processed and summarized. As new results are processed, a new sampling event table will be added with those results. These results do not provide, and are not meant to be, a complete summary of the findings. If a value in the table says "ND", it means the value is below the detection limit and considered as non-detect.

MDHHS Sampling Event 5 (10/18/2021 - 10/25/2021)

Section 1: Metals

Parameter

Number of locations sampled (number of initial samples/numbers of flushed samples)

Range in initial samples (mg/L)

Range in flushed samples (mg/L)

US Environmental Protection Agency (US EPA) Drinking Water Value (mg/L)

Health-based Level (mg/L)

 

Median

Lowest

Highest

Median

Lowest

Highest

Aluminum

60 ( 60 / 60 )

0.048

ND

0.26

0.0505

ND

4.8

0.05-0.20 (J)

0.3 (D)

Antimony

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

0.006 (F)

0.0028 (B: chronic for children)

Arsenic

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

0.01(F)

0 (G)

Barium

60 ( 60 / 60 )

0.013

ND

0.017

0.013

ND

0.049

2 (F)

0.7 (E: 1/10- day for children)

Beryllium

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

0.004 (F)

0.004 (G)

Boron

60 ( 60 / 60 )

0.015

0.014

0.11

0.0145

0.014

0.018

Value not established

1.4 (C: chronic for children)

Cadmium

60 ( 60 / 60 )

ND

ND

0.0026

ND

ND

0.00025

0.005 (F)

0.0007 (C: chronic for children)

Chromium, total

60 ( 60 / 60 )

0.001

ND

0.0017

0.0011

ND

0.0017

0.1 (F)

0.0063 (C: chronic for children, Cr (VI))1

Copper

60 ( 60 / 60 )

0.0105

ND

0.11

0.0041

ND

0.21

1.3 (A)

1.0 (J)

0.07 (C: acute/ intermediate for children) 1.3 (G)2

Iron

60 ( 60 / 60 )

ND

ND

ND

ND

ND

0.39

0.30 (J)

2 (D)

Lead

60 ( 60 / 60 )

ND

ND

0.0015

ND

ND

0.0014

0.015 (A)

0 (G)

Manganese

60 ( 60 / 60 )

ND

ND

0.0062

ND

ND

0.12

0.05 (J)

0.3 (E:  lifetime)

Molybdenum

60 ( 60 / 60 )

ND

ND

ND

ND

ND

0.0028

Value not established

0.035 (B: chronic for children)

Nickel

60 ( 60 / 60 )

0.0017

ND

0.093

0.0017

ND

0.027

Value not established

0.1 (E: lifetime)

Selenium

60 ( 60 / 60 )

ND

ND

0.0024

ND

ND

0.0012

0.05 (F)

0.035 (B, C: chronic for children)

Silver

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

0.1 (J)

0.035 (C: children - chronic for children)

Thallium

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

0.002 (F)

0.0002 (I)

Tin

60 ( 60 / 60 )

ND

ND

ND

ND

ND

0.0015

Value not established

2.1 (C: intermediate children)

Vanadium

60 ( 60 / 60 )

ND

ND

ND

ND

ND

ND

Value not established

0.0045 (D)

Zinc

60 ( 60 / 60 )

ND

ND

0.42

ND

ND

0.14

5 (J)

2 (E: lifetime)

 

Section 2: Disinfectants, Disinfection Byproducts, and Bacteria

Parameter

Number of locations sampled (number of initial samples/numbers of flushed samples)

Range in initial samples

Range in flushed samples 

US Environmental Protection Agency (US EPA) Drinking Water Value 

Health-based level (µg/L)

Median

Lowest

Highest

Median

Lowest

Highest

Chlorine (as Cl2, mg/L)

60 ( 60 / 60 )

0.905

0.06

2

1.275

0.01

3.99

4 mg/L

Learn more here

Haloacetic Acids (HAA5, µg/L)

60 ( 59 / 60 )

25

1

44

24

1.1

32

60 µg/L

Learn more here

Total Trihalomethanes (TTHMs, µg/L)

60 ( 60 / 60 )

31

21

46

31

20

40

80 µg/L

Learn more here

 

Section 3: General Chemistry

Parameter

Number of locations sampled (number of initial samples/numbers of flushed samples)

Range in initial samples 

Range in flushed samples 

US Environmental Protection Agency (US EPA) Drinking Water Value

Health-based Level

 

Median

Lowest

Highest

Median

Lowest

Highest

Calcium (mg/L)

60 ( 60 / 60 )

27

ND

28

27

ND

29

Learn more here

Learn more here

Chloride (mg/L)

60 ( 60 / 60 )

11

11

12

11

11

12

250 (F)

Learn more here

Specific Conductance (µmhos/cm)

60 ( 60 / 60 )

240

230

260

240

230

260

Learn more here

Learn more here

Hardness (as mg/L of CaCO3)

60 ( 60 / 60 )

99.5

ND

100

99

ND

110

Learn more here

Learn more here

Magnesium (mg/L)

60 ( 60 / 60 )

7.7

ND

8.5

7.7

ND

8

Learn more here

400 (D)

Orthophosphate (mg/L)

60 ( 60 / 60 )

0.905

0.047

1.1

0.93

0.56

2.3

Learn more here

Learn more here

pH (SU)

60 ( 60 / 60 )

7.8

7.5

8

7.8

7.5

7.9

6.5 - 8.5 (F)

Learn more here

Sodium (mg/L)

60 ( 60 / 60 )

9.1

8.5

63

9.1

8.3

63

Learn more here

Learn more here

Sulfate (mg/L)

60 ( 60 / 60 )

20

19

21

20

19

21

250 (F)

500 (mg/L) (E)

Total Alkalinity (mg/L)

60 ( 60 / 60 )

70

60

80

70

70

80

Learn more here

Learn more here

Turbidity (NTU)

60 ( 60 / 60 )

0.165

0.09

0.9

0.16

0.09

14

Learn more here

Learn more here

Select from the options below to learn about the community's data summary results.