2021 Consumer Confidence Report
Water System Information
Water System Name: Averydale Mutual Water Company
Report Date: 06/09/22
Type of Water Source(s) in Use: Groundwater
Name and General Location of Source(s): Well #1 & Well #5 35404 30th St E, Lancaster, Ca 93535
Well #3 & Well #4 3659 E Avenue H-4, Lancaster, Ca 93535
Drinking Water Source Assessment Information: Clinical Laboratory of San Bernardino and Antelope Valley East Kern
Time and Place of Regularly Scheduled Board Meetings for Public Participation: Third Tuesday of every month at 7:00pm at 3659 E Avenue H-4, Lancaster, CA 93535
For More Information, Contact: Barry Braman (661) 946-2256
About This Report
We test the drinking water quality for many constituents as required by state and federal regulations. This report shows the results of our monitoring for the period of January 1 to December 31, 2020 and may include earlier monitoring data.
Importance of This Report Statement in Five Non-English Languages (Spanish, Mandarin, Tagalog, Vietnamese, and Hmong)
Language in Spanish: Este informe contiene información muy importante sobre su agua para beber. Favor de comunicarse [Enter Water System’s Name] a [Enter Water System’s Address or Phone Number] para asistirlo en español.
Language in Mandarin: 这份报告含有关于您的饮用水的重要讯息。请用以下地址和电话联系 [Enter Water System Name]以获得中文的帮助: [Enter Water System’s Address][Enter Water System’s Phone Number].
Langauge in Tagalog: Ang pag-uulat na ito ay naglalaman ng mahalagang impormasyon tungkol sa inyong inuming tubig. Mangyaring makipag-ugnayan sa [Enter Water System’s Name and Address] o tumawag sa [Enter Water System’s Phone Number] para matulungan sa wikang Tagalog.
Language in Vietnamese: Báo cáo này chứa thông tin quan trọng về nước uống của bạn. Xin vui lòng liên hệ [Enter Water System’s Name] tại [Enter Water System’s Address or Phone Number] để được hỗ trợ giúp bằng tiếng Việt.
Language in Hmong: Tsab ntawv no muaj cov ntsiab lus tseem ceeb txog koj cov dej haus. Thov hu rau [Enter Water System’s Name] ntawm [Enter Water System’s Address or Phone Number ] rau kev pab hauv lus Askiv.
Terms Used in This Report
Term
Definition
Level 1 Assessment
A Level 1 assessment is a study of the water system to identify potential problems and determine (if possible) why total coliform bacteria have been found in our water system.
Level 2 Assessment
A Level 2 assessment is a very detailed study of the water system to identify potential problems and determine (if possible) why an E. coli MCL violation has occurred and/or why total coliform bacteria have been found in our water system on multiple occasions.
Maximum Contaminant Level (MCL)
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 are set to protect the odor, taste, and appearance of drinking water.
Maximum Contaminant Level Goal (MCLG)
The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs are set by the U.S. Environmental Protection Agency (U.S. EPA).
Maximum Residual Disinfectant Level (MRDL)
The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG)
The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
Primary Drinking Water Standards (PDWS)
MCLs and MRDLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.
Public Health Goal
(PHG)
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.
Regulatory Action Level
(AL)
The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.
Secondary Drinking Water Standards (SDWS)
MCLs for contaminants that affect taste, odor, or appearance of the drinking water. Contaminants with SDWSs do not affect the health at the MCL levels.
Treatment Technique
(TT)
A required process intended to reduce the level of a contaminant in drinking water.
Variances and Exemptions
Permissions from the State Water Resources Control Board (State Board) to exceed an MCL or not comply with a treatment technique under certain conditions.
ND
Not detectable at testing limit.
ppm
parts per million or milligrams per liter (mg/L)
ppb
parts per million or milligrams per liter (mg/L)
ppt
parts per trillion or nanograms per liter (ng/L)
ppq
parts per quadrillion or picogram per liter (pg/L)
pCi/L
picocuries per liter (a measure of radiation)
Sources of Drinking Water and Contaminants that May Be Present in Source Water
The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.
Contaminants that may be present in source water include:
-
Microbial contaminants, such as viruses and bacteria, that may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
-
Inorganic contaminants, such as salts and metals, that can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
-
Pesticides and herbicides, that may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
-
Organic chemical contaminants, including synthetic and volatile organic chemicals, that are byproducts of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, agricultural application, and septic systems.
-
Radioactive contaminants, that can be naturally-occurring or be the result of oil and gas production and mining activities.
Regulation of Drinking Water and Bottled Water Quality
In order to ensure that tap water is safe to drink, the U.S. EPA and the State Board prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. The U.S. Food and Drug Administration regulations and California law also establish limits for contaminants in bottled water that provide the same protection for public health.
About Your Drinking Water Quality
Drinking Water Contaminants Detected
Tables 1, 2, 3, 4, 5, 6, and 8 list all of the drinking water contaminants that were detected during the most recent sampling for the constituent. The presence of these contaminants in the water does not necessarily indicate that the water poses a health risk. The State Board allows us to monitor for certain contaminants less than once per year because the concentrations of these contaminants do not change frequently. Some of the data, though representative of the water quality, are more than one year old. Any violation of an AL, MCL, MRDL, or TT is asterisked. Additional information regarding the violation is provided later in this report.
Table 1. Sampling Results Showing the Detection of Coliform Bacteria
Complete if bacteria are detected.
Microbiological Contaminants
Highest No. of Detections
No. of Months in Violation
MCL
MCLG
Typical Source of Bacteria
Total Coliform Bacteria
(State Total Coliform Rule)
(In a month)
0
0
0 positive monthly sample (a)
0
Naturally present in the environment
Fecal Coliform or E. coli
(State Total Coliform Rule)
(In the year)
0
0
A routine sample and a repeat sample are total coliform positive, and one of these is also fecal coliform or E. coli positive
None
Human and animal fecal waste
E. coli
(Federal Revised Total Coliform Rule)
(In the year)
0
0
(b)
0
Human and animal fecal waste
(a) Two or more positive monthly samples is a violation of the MCL
(b) Routine and repeat samples are total coliform-positive and either is E. coli-positive or system fails to take repeat samples following E. coli-positive routine sample or system fails to analyze total coliform-positive repeat sample for E. coli.
Table 2. Sampling Results Showing the Detection of Lead and Copper
Complete if lead or copper is detected in the last sample set.
Lead and Copper
Sample Date
No. of Samples Collected
90th Percentile Level Detected
No. Sites Exceeding AL
AL
PHG
No. of Schools Requesting Lead Sampling
Typical Source of
Contaminant
Lead (ppb)
09/21/2021
10
ND
0
15
0.2
[Enter No.]
Internal corrosion of household water plumbing systems; discharges from industrial manufacturers; erosion of natural deposits
Copper (ppm)
09/21/2021
10
0.050
2
1.3
0.3
Not
applicable
Internal corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Table 3. Sampling Results for Sodium and Hardness
Chemical or Constituent (and reporting units)
Sample Date
Level Detected
Range of Detections
MCL
PHG (MCLG)
Typical Source of Contaminant
Sodium (ppm)
Well #1
7/21/20
21
None
None
Salt present in the water and is generally naturally occurring
Well #3
7/21/20
28
Salt present in the water and is generally naturally occurring
Well #4
7/21/20
29
Salt present in the water and is generally naturally occurring
Well #5
7/21/20
21
Salt present in the water and is generally naturally occurring
Hardness (ppm)
Well #1
7/21/20
99999
92
]
None
None
Sum of polyvalent cations present in the water, generally magnesium and calcium, and are usually naturally occurring
Well #3
7/21/20
120
Sum of polyvalent cations present in the water, generally magnesium and calcium, and are usually naturally occurring
Well #4
7/21/20
89
Sum of polyvalent cations present in the water, generally magnesium and calcium, and are usually naturally occurring
Well #5
7/21/20
60
Sum of polyvalent cations present in the water, generally magnesium and calcium, and are usually naturally occurring
Table 4. Detection of Contaminants with a Primary Drinking Water Standard
Chemical or Constituent
(and
reporting units)
Sample Date
Level Detected
Range of Detections
MCL [MRDL]
PHG (MCLG) [MRDLG]
Typical Source of Contaminant
Nitrate (as N)
Well #1
7/20/21
.40
0.06-6.3
45
45
Running and leeching from fertilizer use: leeching from septic tanks and sewage: erosion of natural deposits
Nitrate (as N)
Well #3
7/20/21
1.3
0.06-6.3
45
45
Running and leeching from fertilizer use: leeching from septic tanks and sewage: erosion of natural deposits
Nitrate (as N)
Well #4
2/16/21
.93
0.06-6.3
45
45
Running and leeching from fertilizer use: leeching from septic tanks and sewage: erosion of natural deposits
Nitrate (as N)
Well #5
7/20/21
.75
0.06-6.3
45
45
Running and leeching from fertilizer use: leeching from septic tanks and sewage: erosion of natural deposits
Table 5. Detection of Contaminants with a Secondary Drinking Water Standard
Chemical or Constituent (and reporting units)
Sample Date
Level Detected
Range of Detections
SMCL
PHG (MCLG)
Typical Source
of
Contaminant
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter No.]
[Enter Source]
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter No.]
[Enter Source]
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter No.]
[Enter Source]
Table 6. Detection of Unregulated Contaminants
Chemical or Constituent (and reporting units)
Sample Date
Level Detected
Range of Detections
Notification Level
Health Effects Language
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter Language]
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter Language]
[Enter Contaminant]
[Enter Date]
[Enter No.]
[Enter Range]
[Enter No.]
[Enter Language]
Additional General Information on Drinking Water
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 the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the U.S. EPA’s Safe Drinking Water Hotline (1-800-426-4791).
Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. U.S. EPA/Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (1-800-426-4791).
Lead-Specific Language: If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. [Enter Water System’s Name] is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. [Optional: If you do so, you may wish to collect the flushed water and reuse it for another beneficial purpose, such as watering plants.] If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline (1-800-426-4791) or at http://www.epa.gov/lead.
Additional Special Language for Nitrate, Arsenic, Lead, Radon, and Cryptosporidium: [Enter Additional Information Described in Instructions for SWS CCR Document]
Federal Revised Total Coliform Rule (RTCR): [Enter Additional Information Described in Instructions for SWS CCR Document]
Summary Information for Violation of a MCL, MRDL, AL, TT, or Monitoring and Reporting Requirement
Table 7. Violation of a MCL, MRDL, AL, TT or Monitoring Reporting Requirement
Violation
Explanation
Duration
Actions Taken to Correct Violation
Health Effects Language
[Enter Violation Type]
[Enter Violation Explanation]
[Enter Duration]
[Enter Actions Taken]
[Enter Language]
[Enter Violation Type]
[Enter Violation Explanation]
[Enter Duration]
Enter Actions Taken]
[Enter Language]
For Water Systems Providing Groundwater as a Source of Drinking Water
Table 8. Sampling Results Showing Fecal Indicator-Positive Groundwater Source Samples
Microbiological Contaminants (complete if fecal-indicator detected)
Total No. of Detections
Sample Dates
MCL [MRDL]
PHG (MCLG) [MRDLG]
Typical Source of Contaminant
E. coli
(In the year)
[Enter No.]
[Enter Dates]
0
(0)
Human and animal fecal waste
Enterococci
(In the year)
[Enter No.]
[Enter Dates]
TT
N/A
Human and animal fecal waste
Coliphage
(In the year)
[Enter No.]
[Enter Dates]
TT
N/A
Human and animal fecal waste
Summary Information for Fecal Indicator-Positive Groundwater Source Samples, Uncorrected Significant Deficiencies, or Violation of a Groundwater TT
Special Notice of Fecal Indicator-Positive Groundwater Source Sample: [Enter Special Notice of Fecal Indicator-Positive Groundwater Source Sample]
Special Notice for Uncorrected Significant Deficiencies: [Enter Special Notice for Uncorrected Significant Deficiencies]
Table 9. Violation of Groundwater TT
Violation
Explanation
Duration
Actions Taken to Correct Violation
Health Effects Language
[Enter Violation]
[Enter Explanation]
[Enter Duration]
[Enter Actions]
[Enter Language]
[Enter Violation]
[Enter Explanation]
[Enter Duration]
[Enter Actions]
[Enter Language]
For Systems Providing Surface Water as a Source of Drinking Water
Table 10. Sampling Results Showing Treatment of Surface Water Sources
Treatment Technique (a) (Type of approved filtration technology used)
[Enter Treatment Technique]
Turbidity Performance Standards (b) (that must be met through the water treatment process)
Turbidity of the filtered water must:
1 – Be less than or equal to [Enter Turbidity Performance Standard to Be Less Than or Equal to 95% of Measurements in a Month] NTU in 95% of measurements in a month.
2 – Not exceed [Enter Turbidity Performance Standard Not to Be Exceeded for More Than Eight Consecutive Hours] NTU for more than eight consecutive hours.
3 – Not exceed [Enter Turbidity Performance Standard Not to Be Exceeded at Any Time] NTU at any time.
Lowest monthly percentage of samples that met Turbidity Performance Standard No. 1.
[Enter No.]
Highest single turbidity measurement during the year
[Enter No.]
Number of violations of any surface water treatment requirements
[Enter No.]
(a) A required process intended to reduce the level of a contaminant in drinking water.
(b) Turbidity (measured in NTU) is a measurement of the cloudiness of water and is a good indicator of water quality and filtration performance. Turbidity results which meet performance standards are considered to be in compliance with filtration requirements.
Summary Information for Violation of a Surface Water TT
Table 11. Violation of Surface Water TT
Violation
Explanation
Duration
Actions Taken to Correct Violation
Health Effects Language
[Enter Violation]
[Enter Explanation]
[Enter Duration]
[Enter Actions]
[Enter Language]
[Enter Violation]
[Enter Explanation]
[Enter Duration]
[Enter Actions]
[Enter Language]
Summary Information for Operating Under a Variance or Exemption
[Enter Additional Information Described in Instructions for SWS CCR Document]
Summary Information for Federal Revised Total Coliform Rule Level 1 and Level 2 Assessment Requirements
Level 1 or Level 2 Assessment Requirement not Due to an E. coli MCL Violation
Coliforms are bacteria that are naturally present in the environment and are used as an indicator that other, potentially harmful, waterborne pathogens may be present or that a potential pathway exists through which contamination may enter the drinking water distribution system. We found coliforms indicating the need to look for potential problems in water treatment or distribution. When this occurs, we are required to conduct assessment(s) to identify problems and to correct any problems that were found during these assessments.
During the past year we were required to conduct [Insert Number of Level 1 Assessments] Level 1 assessment(s). [Insert Number of Level 1 Assessments] Level 1 assessment(s) were completed. In addition, we were required to take [Insert Number of Corrective Actions] corrective actions and we completed [Insert Number of Corrective Actions] of these actions.
During the past year [Insert Number of Level 2 Assessment] Level 2 assessments were required to be completed for our water system. [Insert Number of Level 2 Assessments] Level 2 assessments were completed. In addition, we were required to take [Insert Number of Corrective Actions] corrective actions and we completed [Insert Number of Corrective Actions] of these actions.
[For Violation of the Total Coliform Bacteria TT Requirement, Enter Additional Information Described in Instructions for SWS CCR Document]
Level 2 Assessment Requirement Due to an E. coli MCL Violation
E. coli are bacteria whose presence indicates that the water may be contaminated with human or animal wastes. Human pathogens in these wastes can cause short-term effects, such as diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a greater health risk for infants, young children, the elderly, and people with severely-compromised immune systems. We found E. coli bacteria, indicating the need to look for potential problems in water treatment or distribution. When this occurs, we are required to conduct assessment(s) identify problems and to correct any problems that were found during these assessments.
We were required to complete a Level 2 assessment because we found E. coli in our water system. In addition, we were required to take [Insert Number of Corrective Actions] corrective actions and we completed [Insert Number of Corrective Actions] of these actions.
[For Violation of the E. coli TT Requirement, Enter Additional Information Described in Instructions for S