CCR-Dry-Valley-2022.pdfAnnual Drinking Water Quality Report
PWSID 1121150 - Dry valley Subdivision
INTRODUCTION
This Annual Drinking Water Quality Report for calendar year 2022 is designed to inform you about your drinking water
quality. Our goal is to provide you with a safe and dependable supply of drinking water, and we want you to understand
the efforts we make to protect your water supply. The quality of your drinking water must meet state and federal
requirements administered by the Virginia Department of Health (VDH).
If you have questions about this report, please contact: Don Todora, PSA Operations Specialist at (540) 381-1997
If you want additional information about any aspect of your drinking water or want to know how to participate in decisions
that may affect the quality of your drinking water, please contact: Chuck Campbell, PSA Director at (540) 381-1997
The times and location of regularly scheduled board meetings are as follows: 7:00 p.m. on the first Monday
of each month in the multipurpose room # 2 on the second floor in the Montgomery County Government
Center, 755 Roanoke Street in Christiansburg.
GENERAL INFORMATION
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: (i) microbial contaminants, such as viruses and
bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife;
(ii) inorganic contaminants, such as salts and metals, which can be naturally occurring or result from urban stormwater
runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming; (iii) pesticides and
herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses;
(iv) organic chemical contaminants, including synthetic and volatile organic chemicals, which are byproducts of industrial
processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems;
(v) radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining
activities. In order to ensure that tap water is safe to drink, EPA prescribes regulations that limit the amount of certain
contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled
water which must provide the same protection for public health.
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 water poses a health risk. More
information about contaminants and potential health effects can be obtained by calling the Environmental Protection
Agency's Safe Drinking Water Hotline (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 who are 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. EPA/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 (800426-4791).
SOURCE and TREATMENT OF YOUR DRINKING WATER
The source of your drinking water is groundwater as described below:
A well located within the Dry Valley Subdivision.
Is there any treatment of your drinking water supply? ( X ) Yes ( ) No
The Virginia Department of Health conducted a source water assessment of our system during 2020 The drilled well was
determined to be of high susceptibility to contamination using the criteria developed by the state in its approved Source
Water Assessment Program. The assessment report consists of maps showing the source water assessment area, an
inventory of known land use activities of concern, and documentation of any known contamination. The report is available
by contacting Chuck Campbell at the phone number or address given elsewhere in this drinking water quality report.
DEFINITIONS
Contaminants in your drinking water are routinely monitored according to Federal and State regulations. In the table and
elsewhere in this report you will find many terms and abbreviations you might not be familiar with. The following
definitions are provided to help you better understand these terms:
Maximum Contaminant Level, or MCL - the highest level of a contaminant that is allowed in drinking water. MCLs are set
as close to the MCLGs as feasible using the best available treatment technology.
Maximum Contaminant Level Goal, or MCLG - the level of a contaminant in drinking water below which there is no known
or expected risk to health. MCLGs allow for a margin of safety.
Maximum Residual Disinfectant Level Goal or MRDLG: the level of 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.
Maximum Residual Disinfectant Level or 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.
Non-detects (ND) - lab analysis indicates that the contaminant is not present
Parts per million (ppm) or Milligrams per liter (mg/l) - one part per million corresponds to one minute in two years or a
single penny in $10,000.
Parts per billion (ppb) or Micrograms per liter - one part per billion corresponds to one minute in 2,000 years, or a single
penny in $10,000,000
Picocuries per liter (pCi/L) - picocuries per liter is a measure of the radioactivity in water.
Action Level (AL) - the concentration of a contaminant which, if exceeded, triggers treatment or other requirements which
a water system must follow.
Treatment Technique (TT) - a required process intended to reduce the level of a contaminant in drinking water.
Level 1 assessment - 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 very detailed study of the waterworks to identify potential problems and determine (if possible)
why an E. coli PMCL violation has occurred and/or why total coliform bacteria have been found in our water system on
multiple occasions.
Contaminant (units) MCLG MCL
Level
Detected
Violation
Range
Date
of
Sam le
Typical Source of Contamination
Nitrate (ppm) 10 10 2.0
N N/A
2022
Runoff from fertilizer use;
Leaching from septic tanks,
sewage; Erosion of natural
deposits
Fluoride (ppm) 4 4 ND
N N/A
2022
Erosion of natural deposits;
Water additive which promotes
strong teeth; Discharge from
fertilizer and aluminum factories
Barium (ppm) 2 2 0.034
N N/A
2022
Discharge of drilling waste;
Discharge from metal refineries;
Erosion of natural deposits
Combined Radium
(pCi/L) 0 5 0.742
N N/A
2022
Gross Alpha (pCi/L) 0 15 2.25
N N/A
2022
Gross Beta (pCi/L) 0 15 1.46
N N/A
2022
Chlorine (ppm) MRDLG =
4
MRDL =
4 1.15 N N/A 2022 Water additive used to control
microbes
Total Trihalomethanes 80 1.0 N N/A 2022 By-product of drinking water
disinfection
Haa5 60 ND N N/A 2022
Lead and Copper Contaminants
Contaminant (units) MCLG Action
Level
90th
Percentile
Date of
Sampling
# of
Sampling
Sites
Exceeding
Action Level
Typical Source of Contamination
Lead (ppb) o AL = 15 13.9 2022 1 Corrosion of household plumbing s stems;
Erosion of natural deposits
Copper (ppm) 1.3 AL =
1.3
O. 249 2022 0 Corrosion of household plumbing systems;
Erosion of natural deposits
Monitoring Results for Sodium Unregulated-No Limits Designated
Level Detected
unit
Sample
Date
Typical Source Guidance
4.0 mg/L 2022 Naturally Occuring;
Addition of treatment
chemicals/ processes
For individuals on a y.e.cy low sodium diet (500 mg/day), EPA recommends
that drinking-water sodium not exceed 20 mg/L. Should you have a health
concern, contact our health care provider.
The state allows us to monitor for some contaminants less than once per year because the concentrations of these
contaminants do not change frequently. Some of our data presented in the above tables, though accurate, is more than
one year old.
MCL's are set at very stringent levels by the U.S. Environmental Protection Agency. In developing the standards EPA
assumes that the average adult drinks 2 liters of water each day throughout a 70 -year life span. EPA generally sets MCLs
at levels that will result in no adverse health effects for some contaminants or a one-in-ten-thousand to one-in-a-million
chance of having the described health effect for other contaminants.
VIOLATION INFORMATION
Date Issued Alleged Violation Cited
February 2, 2022 Failure to provide public notice for failure to monitor November 2021 routine
bacterialogical sample and chlorine residual.
February 2, 2022 Failure to monitor December 2021 routine bacteriological sample and
chlorine residual.
ASSESSMENT INFORMATION
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 assessments to identify problems and to
correct any problems that are found.
During the past year, one Level 2 assessment was required to be completed by New River Water Company for this
waterworks. One Level 2 assessment was completed by the Virginia Department of Health Office of Drinking Water. In
addition, New River Water Company was required to take three corrective actions and they completed none of these
actions.
ADDITIONAL HEALTH INFORMATION
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.
Montgomery County Public Service Authority 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 two minutes before using water for drinking
or cooking. 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 (800-426-4791).