Cary/Apex Water Treatment Facility
Finished Water Quality Report For 2007
We are pleased to present to you this year's Annual Finished Water
Quality Report. This report is a snapshot of last years water quality. It is our constant goal to provide you with a
safe and dependable supply of drinking water. If you have any questions regarding this report, please
contact Kelvin Creech, Manager of the Cary/Apex Water Treatment Facility or
Penny Rosser, Chemist at (919) 362-5502.
In order to ensure that tap water is safe
to drink, EPA prescribes regulations which limit the amount of certain
contaminants in water provided by public water systems. Drinking water,
including bottled water, may reasonably be expected to contain at least small
amounts of some contaminants. The presence of contaminants does not necessarily
indicate that water poses a health risk. To obtain more information about contaminants
and potential health effects, call the Environmental Protection Agency's Safe
Drinking Water Hotline (800-426-4791).
Lead and Copper
|
Contaminant
(units) |
Sample
Date |
Your Water |
#
of sites found above the AL |
MCLG |
MCL |
Likely
Source of Contamination |
|
Copper (ppm) (90th percentile) |
2006 |
0.138 |
0 |
1.3 |
AL=1.3 |
Corrosion of household plumbing systems;
erosion of natural deposits; leaching from wood preservatives |
|
Lead
(ppb) (90th percentile) |
2006 |
< 3 |
1 |
0 |
AL=15 |
Corrosion of household plumbing systems,
erosion of natural deposits |
Nitrate and Nitrite
|
Contaminant (units) |
MCL Violation Y/N |
Your Water |
Range Low / High |
MCLG |
MCL |
Likely Source of Contamination |
|
Nitrate (as
Nitrogen) (ppm) |
N |
< 1.0 |
N/A |
10 |
10 |
Runoff from
fertilizer use; leaching from septic tanks, sewage; erosion of natural
deposits |
|
Nitrite (as
Nitrogen) (ppm) |
N |
< 0.01 |
N/A |
1 |
1 |
Runoff from
fertilizer use; leaching from septic tanks, sewage; erosion of natural
deposits |
Asbestos
|
Contaminant
(units) |
Sample
Date |
MCL
Violation Y/N |
Your Water |
Range Low
/ High |
MCLG |
MCL |
Likely
Source of Contamination |
|
Total Asbestos (MF/L) |
2005 |
N |
< 0.2 |
N/A |
7 |
7 |
Decay of asbestos cement water mains;
erosion of natural deposits |
Note: One
asbestos sample is required to be taken during the first 3-yr compliance period
of each 9-yr compliance cycle beginning in the compliance period starting
1/1/2002 and ending 12/31/2010. The
Cary/Apex WTP collected a sample for asbestos analysis in 2005.
Disinfectants and Disinfection Byproducts
|
Contaminant
(units) |
MCL/MRDL Violation Y/N |
Your Water (AVG) |
Range Low
/ High |
MCLG |
MCL |
Likely
Source of Contamination |
|
|
TTHM (ppb) [Total
Trihalomethanes] |
N |
74 |
51 101 |
N/A |
80 |
By-product of drinking water chlorination |
|
|
HAA5 (ppb) [Total Haloacetic Acids] |
N |
43 |
24 59 |
N/A |
60 |
By-product of drinking water disinfection |
|
|
Bromate (ppb) |
N |
< 10 |
N/A |
0 |
10 |
By-product of drinking water disinfection
|
|
|
Chloramines (ppm) |
N |
2.77 |
1.07 3.34 |
MRDLG = 4 |
MRDL = 4 |
Water additive used to control microbes |
|
|
Chlorine, Free (ppm) |
N |
0.35 |
0.13 1.96 |
MRDLG = 4 |
MRDL = 4 |
Water additive used to control microbes |
|
|
Chlorine, Total (ppm) |
N |
3.12 |
2.74 3.51 |
MRDLG = 4 |
MRDL = 4 |
Water additive used to control microbes |
|
|
Total Organic
Carbon (ppm) |
N |
3.40 |
2.60 4.45 |
N/A |
TT |
Naturally
present in the environment |
|
2007 Finished
Water Quality Report - page 2
Turbidity
|
Contaminant (units) |
MCL Violation Y/N |
Your |