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ANNUAL WATER QUALITY REPORT |
 |
|
More About Lead and Copper Testing: Infants and young children are typically more vulnerable to lead in drinking water than the general population. It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home's plumbing. If you are concerned about elevated lead levels in your home's water, you may wish to have your water tested. Additionally, you may wish to flush your tap for 30 seconds to 2 minutes before using tap water.Never consume hot water from the tap. Additional information is available from the Safe Drinking Water Hotline (800-426-4791). |
Synthetic Organic Compounds including Pesticides and Herbicides:
|
Contaminant |
MCLG |
MCL |
Ashburton |
Montebello |
Source |
|||||||||||
|
|
|
|
HLD
(ppb) |
Range |
|
Range |
|
|||||||||
|
2,4-D |
70 ppb |
70 ppb |
|
|
0.53 |
-
|
Run-off
/ leaching from soil fumigant. |
|||||||||
|
2,4,5-TP [Silvex] |
50 ppb |
50 ppb |
<0.2 |
- |
<0.2 |
-
|
Residue
of banned herbicide. |
|||||||||
|
Alachlor |
0 ppb |
2 ppb |
<0.5 |
- |
<0.5 |
-
|
Runoff
from herbicide used on row crops. |
|||||||||
|
Atrazine |
3 ppb |
3 ppb |
<0.24 |
- |
<0.24 |
-
|
Runoff
from herbicide used on row crops. |
|||||||||
|
Benzo(a)pyrene [PAH] |
0 ppt |
200 ppt |
<0.15 |
- |
<0.15 |
-
|
Leaching
from linings of water storage tanks and distribution lines. |
|||||||||
|
Chlordane |
0 ppb |
2 ppb |
<0.25 |
- |
<0.25 |
-
|
Residue
of banned termiticide. |
|||||||||
|
Dalapon |
200 ppb |
200 ppb |
<1.0 |
- |
<1.0 |
-
|
Runoff
from herbicide used on rights of way. |
|||||||||
|
|
||||||||||||||||
|
Contaminant |
MCLG |
MCL |
Ashburton
|
Montebello
Plants |
Source |
|||||||||||
|
|
|
|
HLD* |
Range |
HLD* |
Range
|
|
|||||||||
|
Bis(2ethylhexyl)adipate |
400 ppb |
400 ppb |
<1.5 |
- |
<1.5 |
-
|
Discharge
from chemical factories. |
|||||||||
|
Bis(2-ethylhexyl)-
phthalate |
0 ppb |
6 ppb |
1.44 |
- |
1.44 |
-
|
Manufactured
chemical commonly added to plastics. |
|||||||||
|
Dinoseb |
7 ppb |
7 ppb |
<0.2 |
- |
<0.2 |
-
|
Runoff
from herbicide used on soybeans and vegetables. |
|||||||||
|
Diquat |
20 ppb |
20 ppb |
Statewide Waiver |
Runoff from herbicide
use |
||||||||||||
|
Dioxin [2,3,7,8-TCDD] |
0 |
30 ppq |
Statewide Waiver |
Emissions from waste
incineration and other combustion; Discharge from chemical factories |
||||||||||||
|
Endothall |
100 ppb |
100 ppb |
Statewide Waiver |
Runoff
from herbicide use |
||||||||||||
|
Endrin |
2 ppb |
2 ppb |
<0.1 |
- |
<0.1 |
-
|
Residue
of banned insecticide |
|||||||||
|
Heptachlor |
0 ppt |
400 ppt |
<.05 |
- |
<.05 |
-
|
Residue
of banned termiticide. |
|||||||||
|
Heptachlor- epoxide |
0 ppt |
200 ppt |
<.05 |
- |
<.05 |
-
|
Breakdown
of heptachlor. |
|||||||||
|
Hexachloro-benzene |
0 ppb |
1 ppb |
<.01 |
- |
<.01 |
-
|
Discharge
from metal refineries and agricultural chemical factories. |
|||||||||
|
Hexachloro-cyclopentadiene |
50 ppb |
50 ppb |
<.01 |
- |
<.01 |
-
|
Discharge
from chemical factories. |
|||||||||
|
Lindane |
200 ppt |
200 ppt |
<.05 |
- |
<.05 |
-
|
Runoff/leaching
from insecticide used on cattle, lumber, |
|||||||||
|
Methoxychlor |
40 ppb |
40 ppb |
<.05 |
- |
<.05 |
-
|
Runoff/leaching
from insecticide used on fruits, vegetables, alfalfa, livestock. |
|||||||||
|
PCBs |
0 ppt |
500 ppt |
<.25 |
|
<.25 |
-
|
Runoff
from landfills; Discharge of waste chemicals. |
|||||||||
|
Contaminant |
MCLG |
MCL |
|
Montebello
|
Source |
|||||||||||
|
Pentachlorophenol |
0 ppb |
1 ppb |
0.88 |
- |
1.03 |
-
|
Discharge
from wood preserving factories. |
|||||||||
|
Picloram |
500 ppb |
500 ppb |
3.5 |
- |
3 |
-
|
Herbicide
runoff. |
|||||||||
|
Simazine |
4 ppb |
4 ppb |
<0.3 |
- |
<0.3 |
-
|
Herbicide
runoff. |
|||||||||
|
Toxaphene |
0 ppb |
3 ppb |
<0.3 |
- |
<0.3 |
-
|
Runoff/leaching
from insecticide used on cotton and cattle. |
|||||||||
* ppb
|
|
|