CCR 2024
2024 Consumer Confidence Report
Water System Information
Water System Name: Apple Valley Heights County Water District
Report Date: JUNE 30, 2025
Type of Water Source(s) in Use: GROUNDWATER WELLS NO. 3 & 4
Name and General Location of Source(s): WELLS NO. 3 & 4 ARE LOCATED IN THE MOJAVE ADJUSDICATED BASIN ALTO. NORTH OF THE SAN BERNARDINO MOUNTAINS, IN THE SOUTHERN UNICORPORATED AREA OF THE TOWN OF APPLE VALLEY.
Drinking Water Source Assessment Information: SOURCE WATER ASSESSMENTS WERE CONDUCTED ON NOVEMBER 7, 2025. THE SOURCE WATER PROTECTION PLAN CAN BE FOUND ON THE DISTRICT WEBSITE HTTPS://AVHWATER.ORG/SOURCE-WATER-PROTECTION-PLAN. A COPY OF THE ASSESSMENT IS ALSO AVAILABLE UPON REQUEST.
Time and Place of Regularly Scheduled Board Meetings for Public Participation: MEETING ARE HELD ON THE THRID WEDNESDAY OF EACH MONTH AT 6:00 PM AT THE DISTRICT OFFICE LOCATED AT 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308.
For More Information, Contact: DANIEL B. SMITH 760-247-7330
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, 2024, 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 APPLE VALLEY HEIGHTS COUNTY WATER DISTRICT, 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308. 760-247-7330. 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 APPLE VALLEY HEIGHTS COUNTY WATER DISTRICT 以获得中文的帮助: 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308. 760-247-7330.
Language in Tagalog: Ang pag-uulat na ito ay naglalaman ng mahalagang impormasyon tungkol sa inyong inuming tubig. Mangyaring makipag-ugnayan sa APPLE VALLEY HEIGHTS COUNTY WATER DISTRICT, 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308 o tumawag sa 760-247-7330 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 APPLE VALLEY HEIGHTS COUNTY WATER DISTRICT tại 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308. 760-247-7330. 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 APPLE VALLEY HEIGHTS COUNTY WATER DISTRICT ntawm 9429 CERRA VISTA STREET, APPLE VALLEY, CA 92308. 760-247-7330. 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. |
| (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 billion or micrograms per liter (µg/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
E. coli
0
0
(a)
0
Human and animal fecal waste
(a) 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
Typical Source of
Contaminant
Lead (ppb)
7-02-2022
7-12-2022
7-14-2022
7-16-2022
7-18-2022
7-28-2022
10
0
NONE
15
0.2
Internal corrosion of household water plumbing systems; discharges from industrial manufacturers; erosion of natural deposits
Copper (ppm)
7-02-2022
7-12-2022
7-14-2022
7-16-2022
7-18-2022
7-28-2022
10
0.060
NONE
1.3
0.3
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)
06-20-2023
83.000
83.000
None
None
Salt present in the water and is generally naturally occurring
Hardness (ppm)
06/20/2023
230.000
230.000
None
None
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
Fluoride (m/gL)
06-20-2023
1.200
1.200
2.000
1.000
Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories
Nitrate (as N) (mg/L)
08-08-2024
12-04-2024
0.723
0.6900-0.7400
10.000
0.400
Runoff and leaching from fertilizer use; leaching from septic tanks and sewage; erosion of natural deposits
Radium (pCi/l)
2-12-20
4-21-20
5-27-20
8-19-20
1.410
0.770-2.020
5.000
5.000
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
Chloride (mg/L)
06-20-2023
21.000
21.000
500.000
Runoff/leaching from natural deposits; seawater influence
Sulfate (mg/L)
06-20-2023
300.000
300.000
500.000
Runoff/leaching from natural deposits; seawater influence
Total Dissolved Solids (mg/L)
06-20-2023
550.000
500.000
1000.000
Runoff/leaching from natural deposits
Specific Conductance (umho/cm)
06-20-2023
850.000
850.000
1600.000
Substances that form ions when in water; seawater influence
Table 6. Detection of Unregulated Contaminants
Chemical or Constituent (and reporting units)
Sample Date
Level Detected
Range of Detections
Notification Level
Health Effects
Boron (ug/L)
06-20-2023
780.000
780.000
100.000
Boron exposures resulted in decreased fetal weight (developmental effects) in newborn rats
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]
State Revised Total Coliform Rule (RTCR): This Consumer Confidence Report (CCR) reflects changes in drinking water regulatory requirements during 2023. These revisions add the requirements of the federal Revised Total Coliform Rule, effective since April 1, 2016, to the existing state Total Coliform Rule. The revised rule maintains the purpose of protecting public health by ensuring the integrity of the drinking water distribution system and monitoring for the presence of microbials (i.e., total coliform and E.coli bacteria). The U.S. EPA anticipates greater public health protection as the rule requires water systems that are vulnerable to microbial contamination to identify and fix problems. Water systems that exceed a specified frequency of total coliform occurrences are required to conduct an assessment to determine if any sanitary defects exist. If found, these must be corrected by the water system. The state Revised Total Coliform Rule became effective July 1, 2021. Summary Information for Violation of a MCL, MRDL, AL, TT, or Monitoring and Reporting Requirement
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
Total Coliform
Our water system failed the drinking water standard for total coliform during May and October 2024.
Two Days in May. Three days in October.
We have improved water sample procedures. Flushing the water tap for 5 minutes. Spray with 10% chlorine solution or flame and allow to sit for ~ 1 min before sampling.
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.
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
0
Not applicable
0
(0)
Human and animal fecal waste
Enterococci
0
Not applicable
TT
N/A
Human and animal fecal waste
Coliphage
0
Not applicable
TT
N/A
Human and animal fecal waste