06-09-2006 09:29am
From-CITY OF
City of
Water Quality Data 2004/2005
This is a summary of the water quality data for
federal and state water quality regulations. The frequency of testing varies depending on the parameters and is in compliance with established standards.
Dallas Water
Utilities is a superior rated water system by the
All three water treatment
plants are optimized and certified by meeting the
|
PARAMETER |
MCL or MSCL Mg/l |
East Side WTP |
Bachman WTP |
Elm Fork WTP |
|||
|
Average |
Range |
Average |
Range |
Average |
Range |
||
|
MINERALS Total Alkalinity as CaC03 |
No Standard |
55 |
41-66 |
49 |
29-87 |
41 |
26-71 |
|
Aluminum |
0.2 |
0.06 |
<0.05-0.06 |
<0.05 |
<0.05 |
<0.05 |
<0.05 |
|
Calcium |
No Standard |
27 |
20-44 |
54 |
43-64 |
32 |
23-45 |
|
Chloride as NaCI |
300 |
18 |
20-22 |
31 |
24-38 |
27 |
20-44 |
|
Fluoride |
4 |
0.54 |
0.27-0.78 |
0.51 |
0.28-0.69 |
0.61 |
0.30-0.80 |
|
Magnesium |
No standard |
3 |
2-4 |
4 |
3-6 |
3 |
2-5 |
|
Nitrate as N |
10 |
0.18 |
|
0.17 |
|
0.37 |
|
|
Nitrite as N |
1 |
0.04 |
|
0.13 |
|
0.03 |
|
|
Phosphate as P |
No Standard |
0.017 |
<0.02-0.11 |
<0.02 |
<0.02-0.02 |
0.02 |
<0.02-0.05 |
|
Sulfate |
300 |
38 |
33-65 |
78 |
43-89 |
64 |
45-88 |
|
Total Dissolved Solids |
1,000 |
171 |
131-222 |
224 |
197-242 |
193 |
171-224 |
|
Total Hardness |
No Standard |
91 |
73-112 |
93 |
74-111 |
82 |
64-120 |
|
TRACE
CHEMICALS Arsenic |
0.05 |
|
<0.002 |
|
<0.002 |
|
<0.002 |
|
Cadmium |
0.005 |
|
<0.001 |
|
<0.001 |
|
<0.001 |
|
Chromium |
0.1 |
|
<0.01 |
|
<0.01 |
|
<0.01 |
|
Copper* |
1.3** |
<0.01 |
<0.01-0.021 |
0.154 |
<0.01-0.315 |
<0.01 |
<0.01 |
|
Iron |
0.3 |
<0.05 |
<0.05 |
<0.05 |
<0.05 |
<0.05 |
<0.05 |
|
Lead* |
0.015** |
|
<0.005 |
|
<0.005 |
|
<0.005 |
|
Manganese |
0.05 |
|
<0.008 |
|
<0.008 |
|
<0.008 |
|
Mercury |
0.002 |
|
<0.00027 |
|
<0.00027 |
|
<0.00027 |
|
Nickel |
0.1 |
|
<0.02 |
|
<0.02 |
|
<0.02 |
|
Silver |
0.1 |
|
<0.01 |
|
<0.01 |
|
<0.01 |
|
Sodium |
No Standard |
16 |
8-23 |
33 |
24-30 |
31 |
16-42 |
|
Thallium |
0.002 |
|
<0.001 |
|
<0.001 |
|
<0.001 |
|
Vanadium |
No Standard |
|
<0.05 |
|
<0.05 |
|
<0.05 |
|
Zinc |
5.0 |
|
<0.01 |
|
<0.01 |
|
<0.01 |
|
Cyanides |
0.2 |
|
<0.01 |
|
<0.01 |
|
<0.01 |
|
DISINFECTION
BY PRODUCTS Total
Trihalomethanes and HAA5*** |
THM 0.08 HAA5 0.06 |
0.026 0.026 as Annual Running Average per Distribution Quarterly Monitoring |
|||||
|
PESTICIDES VOC’S
/ SOC’S |
Detailed Data Upon Request |
|
|
|
|
|
|
|
MISCELLANEOUS Total
Chlorine Residual |
|
|
|
|
|
|
|
|
0.5 Minimum |
4.1 |
3.00-5.60 |
3.85 |
2.20-4.55 |
3.45 |
2.90-3.95 |
|
|
Color |
15 units MAX |
2 |
3 |
68 |
o.o6 |
3.7 |
|
|
Odor |
3 Threshold Units |
3 |
2-5 |
3 |
2-5 |
3 |
2-4 |
|
Temperature
(Degrees F.) |
No Standard |
68 |
48-86 |
39 |
48-88 |
66 |
42-87 |
|
Turbidity |
0.5 NTU Max. |
0.06 |
0.05-0.08 |
0.10 |
0.06-0.14 |
0.06 |
0.05-0.08 |
|
ph
Units |
6.0-9.0 |
8.7 |
7.7-9.1 |
8.4 |
7.8-9.2 |
8.6 |
7.9-9.0 |
|
BACTERIOLOGICAL Number
of Total Coli form Tests |
Min. 330 per Month |
All Three Plants – 330 per Month |
|||||
|
Total
Coli forms |
<5% samples present |
0.20% |
|||||
|
Fecal
Coli forms |
Absent |
Absent |
|||||
Giardia and Cryptosporidium – Non Detected in tap water * AL – Action Level
MCL – Maximum Contaminant Level ** 90 percentile value in the distribution system
MSCL – Maximum Secondary Contaminant Level *** Halo acetic Acids – five species
Note: All Data in mg/L unless otherwise noted
No Range available for chemicals under the minimum detection level
Water Utilities Department
Purification
Division 405 Long Creek •
A city utility providing regional water and wastewater services vital to public health and safety