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TURBIDITY TABLE

tank

 

The Columbus Utilities detected measurable quantities of the 20 parameters listed in the following table. An additional 51 parameters were tested for, but were not present in quantities that were detectable. This is done to ensure that your water is as safe as is technologically possible. A list of all regulated chemicals is available upon request.

National Primary Drinking Water Parameters

Maximum Contaminant Level(MCL)

Water Plant 1

Water Plant 2

 

 

 

 

CLARITY (NTU)

 

 

 

Turbidity Ground Water

5

0.06

0.02

 

 

 

 

MICROBIOLOGICAL (Percent Positive)

 

 

 

Coliform

Presence/Absence

Absent

Absent

 

 

 

 

INORGANIC COMPOUNDS (mg/L)

 

 

 

Barium

2

0.054

0.054

Fluoride (Adjusted)

4

1.21

1.06

Nickel

0.1

<0.003

<0.003

 

 

 

 

NITRATES AND NITRITE (mg/L)

 

 

 

Nitrate (as N)

10

<0.50

4.29

 

 

 

 

LEAD AND COPPER (mg/L)

 

 

 

Lead (Action Level)

0.015

0.004

0.004

Copper (Action Level)

1.300

0.010

0.049

 

 

 

 

ORGANIC COMPOUNDS (mg/L)

 

 

 

Total Trihalomethanes

80

15.38

16.58

 

 

 

 

ADDITIONAL PARAMETERS (Unit is mg/L unless specified)

 

 

 

Alkalinity

 

280

230

Calcium

 

104

96

Conductivity (umhos/cm)

 

626

579

Hardness as CaC0 3

 

356

312

Hardness as CaC0 3 (Grains/gallon)

 

21

18

Iron

0.3

0.10

0.03

Magnesium

 

32

28

Manganese

0.05

<0.05

<.05

pH (pH Unit)

6.5 - 8.5

7.4

7.6

Silica

 

9.76

9.99

Sodium

 

19.60

9.22

Sulfate

250

56.3

53.5

Total Dissolved Solids

 

432

381

Zinc

5

<0.014

<0.007

TURBIDITY RESULTS
Plant 1

 

MCL

MCLG

level found

range

sample date

violation

typical source

Turbidity

TT=5NTU

-

2.78

-

6/13/2005

No

soil runoff

 

TT= percentage of samples<0.5 NTU

 

99.98 %

-

 

 

 

Plant 2

 

MCL

MCLG

level found

range

sample date

violation

typical source

Turbidity

TT=5NTU

-

1.66

-

1/18/2005

No

soil runoff

 

TT= percentage of samples<0.5 NTU

 

99.99 %

-

 

 

 

 

KEY TO ABBREVIATIONS

mg/L = milligrams per Liter

mrem/year = millirems per year

EXPLANATIONS

One milligram per liter is the same as one part per million or one dollar out of one million dollars .

 

  Send mail to ccu@columbusutilities.org with questions or comments about this webpage.