Date: 9/8/2010
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Water Quality Report Data Sheet

What''''s In My Water?
We are pleased to report that during the past year, the water delivered to your home or business complied with, or did better than, all state and federal drinking water requirements. For your information, we have compiled a list in the table below showing what substances were detected in our drinking water during 2001. Although all of the substances listed below are under the Maximum Contaminant Level (MCL) set by the U.S. EPA, we feel it is important that you know exactly what was detected and how much of the substance was present in the water. The state requires us to monitor for certain substances less than once per year because the concentrations of these substances do not change frequently. In these cases, the most recent sample data are included, along with the year in which the sample was taken.

Download the brochure version of this report.

Regulated Substances
Vallejo System Treated Water
Lakes System Treated Water
NBA Raw Water
SID Raw Water
Lake Frey Raw Water
      
Substance (Units)
Year Sampled
MCL
PHG (MCLG)
Highest Amount Detected
Range Low-High
Highest Amount Detected
Range Low-High
Highest Amount Detected
Range Low-High
Highest Amount Detected
Range Low-High
Highest Amount Detected
Range Low-High
Violation
Typical Source
Primary Drinking Water Standard (Monitoring of these substances is regulated to protect against possible adverse health effects.)
Aluminum (ppb)
2001
1,000
NA
150
150-150
200
200-200
NA
NA
NA
NA
NA
NA
No
 Discharge from petroleum and chemical factories; underground gas tank leaks
Chromium (ppb)
2001
50
2.5
23
ND-23
17
ND-17
NA
NA
NA
NA
NA
NA
No
 Discharge from steel and pulp mills and chrome plating; erosion of natural deposits
Fluoride (PPM)
2001
2
1
1.48
0.37-1.48
0.12
DN-0.12
0.18
0.08-0.18
0.31
0.12-0.31
0.06
ND-0.06
No
 Erosion of natural deposits Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories
Gross Alpha Activity (pCi/L)
1999
15
0
NA
NA
NA
NA
2.5
ND-2.5
3.69*
0.53-3.69*
1.20
ND-1.20
No
 Erosion of natural deposits
Nitrate (as nitrate, NO3) (PPM)
2001
45
45
1.8
ND-1.8
NA
NA
NA
NA
NA
NA
NA
NA
No
 Runoff and leaching from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Total Coliform Bacteria (% positive samples)
2001
5% positive samples
0
1.8
NA
NA
NA
NA
NA
NA
NA
NA
NA
No
 Naturally present in the environment
Tritium (pCi/l)
1998
20,000
0
NA
NA
NA
NA
NA
NA
2,286
831-2,286
NA
NA
No
 Decay of natural and man-made deposits
TTHMs [Total trihalomethanes] (ppb)
2001
100
NA
34
15-72
NA
NA
NA
NA
NA
NA
NA
NA
No
 By-product of drinking water chlorination
Turbidity (NTU)**
2001
TT
NA
0.83
NA
0.40
NA
NA
NA
NA
NA
NA
NA
No
 Soil runoff

Regulated Substances
Vallejo System Treated Water
Lakes System Treated Water
  

Information Collection Rule

The Fleming Hill Water Treatment Plant participated in an 18-month EPA monitoring program called the Information Collection Rule (ICR) between July 1997 and December 1998. Data collected under the ICR will be used to write future microbial and disinfection by-product regulations for drinking water. The table below represents some of our finds in treated water (more recent data is included if available):
Substance (Units)
Year
Sample
Average
Detected
Range Low-High
Aldehydes (ppb)
1998
6
5.4-7.9
Bromate (ppb)
2001
1
ND-2
Chloral Hydrate (ppb)
1998
3.6
3-4
Chlorine (ppm)
2001
1.56
0.77-3.3
Haloacetilnitriles (ppb)
1998
2.7
1.9-3.7
Total Organic Halides (ppb)
1998
96
78-115
Substance (Units)
Year Sampled
MCL
PHG (MCLG)
Average Amount Detected
Range Low-High
Average Amount Detected
Range Low-High
Violation
Typical Source
Secondary Drinking Water Standard (Monitoring of these substances is regulated to protect the odor, taste and appearance of drinking water.)
Aluminum (ppb)
2001
200
NS
150
150-150
200
200-200
No
 Erosion of natural deposits; residue from surface water treatment processes
Chloride (PPM)
2001
500
NS
13.3
7-31.7
17.4
12.5-28
No
 Runoff/leaching from natural deposits; seawater influence
Foaming Agents (MBAS) (ppb)
2001
500
NS
NA
NA
58
58-58
No
 Municipal and industrial waste discharges
Odor (Threshold Units)
2001
3
NS
1.3
ND-2
1.2
ND-2
No
 Naturally occurring organic materials
Specific Conductance (umhos/cm)
2001
1,600
NS
319
250-425
287
112-368
No
 Substances that form ions when in water; seawater influence
Sulfate (PPM)
2001
500
NS
32.6
23.7-55.7
24.8
11.7-44.3
No
 Runoff/leaching from natural deposits; industrial wastes
Total Dissolved Solids
2001
1,000
NS
200
156-266
180
70-230
No
 Runoff/leaching from natural deposits

Lead And Copper (Tap water samples were collected from 13 in the service area
  
Vallejo System Treated Water
Lakes System Treated Water
   
Substance (Units)
Year Sampled
Action Level
MCLG
Amount Detected (90th %ile)
Homes Above AL/Total Homes Tested
Amount Detected (90th %ile)
Homes Above AL/Total Homes Tested
Violation
Typical Source
Copper (ppb)
2001
1300
170
95***
0/50
144
0/13
No
 Internal corrosion of household plumbing systems; Erosion of natural deposits; Leaching from wood preservatives

Other Substances
Vallejo System Treated Water
Lakes System Treated Water
Substance (Units)
Year Sampled
Average Detected
Range Low-High
Average Detected
Range Low-High
Calcium (PPT) 2001
38.3
20.0-58.0
31.8
5.2-94.0
Hardness (PPM) 2001
142
93-180
123
19-186
Magnesium (PPM) 2001
11.8
5.9-39.9
11.2
1.0-19.8
pH (Units) 2001
7.8
6.9-8.7
7.6
6.8-8.6
Potassium (PPM) 2001
1.5
1.5-1.5
1.7
1.7-1.7
Sodium (PPM) 2001
17.0
17.0-17.0
19.0
19.0-19.0

*Sampled in 1998
**Turbidity is a measure of the cloudiness of the water. We monitor it
because it is a good indicator of the effectiveness of our filtration system.
During the reporting year, a minimum of 99.8% of all samples taken to
measure turbidity met water quality standards.
***Sampled in 2000

Table Definitions

AL (Action-Level): the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

MCL (Maximum Contaminant Level): The highest level of a contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs (2nd MCL) are set to protect the odor, taste, and appearance of drinking water.

MCLG (Maximum Contaminant Level Goal): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the US Environmental Protection Agency.

umhos/cm (micromhos per centimeter): A measure of electrical conductance.

NA: Not applicable.

NS: No standard established.

ND: Not detected. (Detection limits available upon request).

NTU (nephelometric turbidity units): Measurement of the clarity, or turbidity, of water.

PHG (Public Health Goal): The level of a contaminant in drinking water below which there is no known or expected risk to health. PHGs are set by the California Environmental Protection Agency.

pCi/L (picocuries per liter): A measure of the natural rate of radioactive disintegration.

ppb (parts per billion): One part per billion (or micrograms per liter).

PPM (parts per million): One part per million (or milligrams per liter).

Primary Drinking Water Standard or PDWS: MCLs for contaminants that affect health along with the monitoring and reporting requirements and water treatment requirements.

TT (Treatment Technique): A required process intended to reduce the level of a contaminant in drinking water.
 


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