Fort Irwin routinely monitors for constituents in the drinking water at the Army Heliport at Barstow-Daggett (AHAB) according to Federal and State laws. This document explains the 2016 monitoring results and provides contact information.
It is important that customers of the water at AHAB be informed about water quality at the facility.
Este informe contiene informacion muy importante sobre su agua potable. Traduzcalo 'o hable con alguien que lo entienda bien.
If you have questions concerning this report contact: Fort Irwin, DPW, Environmental Division, 760-380-3410.
Fort Irwin posts several years of water reports and other environmental information at: http://www.irwin.army.mil/Pages/Community/EnviormentInfo.html.
|Table of Contents|
|Water Quality Monitoring||2|
|Army Heliport at Barstow-Daggett (AHAB)'s Water Source||2|
|Should Customers be Concerned?||2|
|Sources of Contaminants and Tables of Results||4|
|Table 1: Microbial Monitoring||4|
|Table 2: Lead and Copper||4|
|Table 3: Regulated and Non-regulated Contaminants||5|
|Table 3: Contaminants (Cont.) Part 2||6|
It is Fort Irwin’s responsibility to provide users of the water system at the Army Heliport at Barstow-Daggett (AHAB) with an annual report. This document covers the requirement for a Consumer Confidence Report (CCR). It is important to keep customers informed about the water quality and services delivered over the past year. Fort Irwin’s goal is to provide a safe and dependable supply of drinking water.
In order to ensure that tap water is safe to drink, United States Environmental Protection Agency (USEPA), and the California State Water Resources Control Board, Division of Drinking Water (DDW), prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. DDW regulations also establish limits for contaminants in bottled water that must provide the same protection for public health.
Last year, we conducted more than 120 tests for 110 different contaminants. This report covers monitoring from 1 January 2016 through 31 December 2016. 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 the data presented in this report, though representative, is more than one year old.
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 EPA’s safe drinking water hotline at 1-800-426-4791 or at their web site www.epa.gov/safewater/.
The source of our water is groundwater that comes from Well # 4 on the Barstow-Daggett airport. The water source is the aquifier located under the area surrounding the airfield. These aquifers are very similar to underground lakes bordered by the rising bedrock surrounding each basin and form the hills visible on the surface. AHAB pumped about 1.2 million gallons of water out of the ground last year. AHAB's water system provides water to approximately 125 customers daily.
Microbial contaminants are not a significant concern in AHAB's groundwater. 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 of infections. These people should seek advice about drinking water from their health care providers. USEPA/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).
Conserving water at Fort Irwin and AHAB is as important to the installation as breathing the air. Without water, AHAB will not be able to support the Army's mission. Conserving water is very important for several reasons. The primary being the cost to have water brought in from another water provider would be very expensive. Then we would have to buy our water rather than only pay the cost to pump it from the ground. Fort Irwin and AHAB is very reliant on you, the consumer, to conserve this natural resource. Below are some tips on how to conserve water and help extend our water supply. Other conservation tips can be found at http://www.bewaterwise.com/.
Wash only full loads of laundry in your washing machine or full loads of dishes in your dishwasher. You'll not only save our water, but conserve energy as well.
Turn the water off. Minimize faucet use when shaving, brushing teeth and washing dishes. If your faucets or showerheads are leaking, call the housing office to report it.
Shorten your shower time by one minute. Cut back on your shower time and you will save on water use. Limit your showers to 5 minutes. This not only saves water but energy as well.
Don't pre-rinse your dishes. Check to see if your dishwasher can clean dishes without pre-rinsing them. Most newer dishwashers don't require pre-rinsing.
Reuse clean water. Collect all the water that is wasted while waiting for the hot water to reach your faucet or showerhead by filling a plant waterer or jug. Use this water to water your houseplants or outdoor planters. Do the same with water that is used to boil eggs and steam vegetables.
Call in water breaks. If you have a water leak, or notice a water problem, please call the (760) 386-3539, High Desert Support Services (HDSS)
On the following pages are tables containing summarized results of our monitoring. To understand these terms, Fort Irwin has provided the following definitions:
Non-Detects (ND) - Laboratory analysis indicates that the constituent is not present at or above the minimum detection limit for the analytical method.
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 (µg/L) - One part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000.
Regulatory Action Level (AL) - The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
Maximum Contaminant Level Goal (MCLG) - The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLG's are set by the U.S. Environmental Protection Agency (USEPA).
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.
Primary Drinking Water Standard (PDWS) - MCL's for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.
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.
Safe Drinking Water Act (SDWA) - Federal law which sets forth drinking water regulations.
Maximum Residual Disinfectant Level (MRDL) - The level of a disinfectant added for water treatment that may not be exceeded at the consumer's tap.
Maximum Residual Disinfectant Level Goal (MRDLG) - The level of a disinfectant added for water treatment below which there is no known or expected risk to health. MRDLGs are set by the (USEPA).
Disinfection Byproducts - Results from adding chlorine to the water to kill or suppress bacteria and other harmful organics. When chlorine is added it reacts with the carbon material forming byproducts that the USEPA and CA DDW believe are harmful.
The following tables present the results of our monitoring for the reporting period of 2016. In reading the tables, compare the MCL column to the Average Level Detected column.
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 Monitoring is conducted on a monthly basis. This monitoring uses the coliform bacteria as an indicator for all microbial contaminants. Coliform is used because it is present in the environment, it is more resistant than other bacteria to treatment and it is easy to detect. Table 1 has the results from bacteria monitoring.
|Table 1: Microbial Monitoring|
|Analyte||Unit||Maximum contaminant Level (MCL)||Maximum contaminant Level Goal (MCLG)||Source of Contamination|
|Highest Number of Positive Results||Number of Months exceeding MCL|
|Total Coliform Bacteria||Positive Samples per month||0||0||More than 1 positive sample in a month||No Positive||Naturally present in the environment|
AHAB tests for lead and copper at selected taps in our water system. Results from the lead and copper testing indicate the corrosiveness of AHAB's water. Lead and copper are leached from the plumbing inside the buildings. You can miminize your exposure to lead and copper by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. Table 2 contains the result from monitoring of lead and copper. Compare the 90% level to the Action level.
|Table 2: Lead and Copper Monitoring|
|Analyte||Unit||Sites Tested||Sites exceeding the AL||90 % Level*||Maximum Contaminant Level (MCL)||Maximum Contaminant Level Goal (MCLG)||Source of Contamination|
|Lead (Pb)||µg/L||10||0||ND||AL** = 15||2||Internal corrosion of household water plumbing systems|
|Copper (Cu)||mg/L||10||1||0.220||AL** = 1.3||0.17|
All results for lead and copper are from 2016.
*90% or more of the monitoring results were below this result.
**AL or regulatory action level is set by the California DDW. If exceeded preventive treatment is required, equivalent to a MCL.
AHAB is required each year (or other period) to test for Contaminants the EPA and CA DDW are concerned about. We also test our water for indicators of water quality. These indicators of water quality help Fort Irwin provide the best water possible. Table 3 contains the monitoring results from 2016 and previous years.
|Table 3: Regulated and Non-regulated Contaminants|
|Analyte||Unit||Range Detected||Average||Maximum contaminant Level (MCL)||Maximum contaminant Level Goal (MCLG)||Source of Contamination|
|EPA and State Regulated|
|Barium (Ba)||mg/L||0.063||0.063||1||Erosion of natural occurring deposits|
|Boron (B)||µg/L||150 - 170 13||161.7 13||1000||State Regulated, No MCL: Erosion of natural occurring deposits|
|Chloride (Cl)||mg/L||21||21||500||Secondary Drinking Water Standard: Erosion of natural occurring deposits|
|Chromium (Cr), Total||µg/L||6.5||6.5||50||0.02||Erosion of natural deposits|
|Hexalvent Chromium (Cr), Chromium VI*||µg/L||6.3 - 6.8 13||6.55 13||10||0.02||Erosion of natural deposits|
|Fluoride (F)||mg/L||0.6||0.6||2.0||1||Erosion of natural occurring deposits; water additive that promotes strong teeth;|
|Gross Alpha||pCi/L||7.94 13||7.94 13||15||Erosion of natural occurring deposits|
|Haloacetic Acids (HAA5)||µg/L||1.5 13||1.5 13||60||Disinfection byproducts|
|Dibromoacetic Acid||µg/L||ND 13||ND 13||Part of HAA5|
|Dichloroacetic Acid||µg/L||1.5 13||1.5 13||Part of HAA5|
|Monobromoacetic Acid||µg/L||ND 13||ND 13||Part of HAA5|
|Monochoroacetic Acid||µg/L||ND 13||ND 13||Part of HAA5|
|Trichloroacetic Acid||µg/L||ND 13||ND 13||Part of HAA5|
|Nitrate (NO3) as N||mg/L||0.33||0.33||10||10||Runoff and leaching from fertilizer use; leaching from septic tanks and sewer systems; erosion of natural deposits|
|Specific Conductance||µS/cm||460||460||1600||Substances that form ions when in water|
|Sulfate (SO4)||mg/L||36||36||500||Secondary Drinking Water Standard: Erosion of natural occurring deposits|
* Some people who drink water containing hexavalent chromium in excess of the MCL over many years may have an increased risk of getting cancer.
Italicized numbers indicate the year the data is from i.e (13 for 2013, 14 for 2014). If no number, data is from 2016 .
|Analyte||Unit||Range Detected||Average||Maximum contaminant Level (MCL)||Maximum contaminant Level Goal (MCLG)||Source of Contamination|
|Table 3: Regulated and Non-regulated Contaminants (Cont.)|
|Total Trihalomethanes (TTHM)||µg/L||8.3 - 18.2 13||11.7 13||80||Disinfection byproducts|
|Bromodi-chloromethane||µg/L||1.2 - 3.6 13||2.24 13||Part of TTHM|
|Bromoform||µg/L||2.3 - 6.9 13||4.34 13||Part of TTHM|
|Chloroform||µg/L||1.5 - 1.6 13||1.55 13||Part of TTHM|
|Dibromo-chloromethane||µg/L||2.1 - 6.5 13||4.06 13||Part of TTHM||Vanadium (V)||µg/L||7.7 - 8.6 13||8.2 13||50||Erosion of natural occurring deposits|
|Uranium*||pCi/L||8.41 13||8.41 13||20||0.43||Erosion of natural occurring deposits|
|Water Quality (Not Regulated)|
|Alkalinity, Total||mg/L||140||140||Erosion of natural occurring deposits|
|Bicarbonate (HCO3)||mg/L||180||180||Part of Alkalinity|
|Carbonate (CO3)||mg/L||ND||ND||Part of Alkalinity|
|Calcium (Ca)||mg/L||35||35||Erosion of natural occurring deposits|
|Hardness, Total||mg/L||110||110||is the sum of polyvalent cations present, generally magnesium and calcium. The cations are usually naturally occurring.|
|Nitrate + Nitrite (as N)||µg/L||430 13||430 13||Runoff and leaching from fertilizer use; leaching from septic tanks and sewer systems; erosion of natural deposits|
|Magnesium (Mg)||mg/L||5.4||5.4||Erosion of natural occurring deposits|
|Potassium (K)||mg/L||1.9||1.9||Erosion of natural occurring deposits|
|Sodium (Na)||mg/L||53||53||"Sodium" refers to the salt present and is generally naturally occurring.|
*Some people who drink water containing uranium in excess of the MCL over many years may have kidney problems or an increased risk of getting cancer.
Italicized numbers indicate the year the data is from i.e (13 for 2013, 14 for 2014). If no number, data is from 2016.