2019 Water Quality Report

Posted on by okoboji

2019 WATER QUALITY REPORT

FOR

OKOBOJI WATER SUPPLY

 

This report contains important information regarding the water quality in our water system. The source of our water is surface water. All of the water is purchased.  Purchased water comes from Central Water System. Our water quality testing shows the following results:

 

CONTAMINANT MCL – (MCLG) Compliance Date Violation Source
    Type Value & (Range)   Yes/No  
Total Trihalomethanes (ppb) [TTHM] 80   (N/A) LRAA 65.00 (57-77) 12/31/2019 No By-products of drinking water chlorination
Total Haloacetic Acids (ppb) [HAA5] 60   (N/A) LRAA 40.00 (31-46) 12/31/2019 No By-products of drinking water disinfection
Lead (ppb) AL=15   (0) 90th 3.00 (ND – 16)

1 sample(s) exceeded AL

 2017 No Corrosion of household plumbing systems; erosion of natural deposits
Copper (ppm) AL=1.3   (1.3) 90th 0.11 (0.07 – 0.20) 2017 No Corrosion of household plumbing systems; Erosion of natural deposits; Leaching from wood preservatives
950 – DISTRIBUTION SYSTEM
Chlorine (ppm) MRDL=4.0   (MRDLG=4.0) RAA 2.23 (1.55-2.7) 12/31/3019 No Water additive used to control microbes

 

 

Note: Contaminants with dates indicate results from the most recent testing done in accordance with regulations.

 

DEFINITIONS

 

  • Maximum Contaminant Level (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 (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.
  • ppb — parts per billion.
  • ppm — parts per million.
  • pCi/L – picocuries per liter
  • N/A – Not applicable
  • ND — Not detected
  • RAA – Running Annual Average
  • Treatment Technique (TT) – A required process intended to reduce the level of a contaminant in drinking water.
  • Action Level (AL) – The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
  • 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.
  • 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.
  • SGL – Single Sample Result
  • RTCR – Revised Total Coliform Rule
  • NTU – Nephelometric Turbidity Units

 

GENERAL INFORMATION

 

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 posed a health risk.  More information about contaminants or 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 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 (800-426-4791).

 

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.  OKOBOJI WATER SUPPLY 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.  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 or at http://www.epa.gov/safewater/lead.

 

ADDITIONAL HEALTH INFORMATION

 

Infants and young children are typically more vulnerable to lead in drinking water than the general population.  It is possible that lead levels at your home may be higher than at other homes in the community as a result of materials used in your home’s plumbing.  If you are concerned about elevated lead levels in your home’s water, you may wish to have your water tested and flush your tap for 30 seconds to 2 minutes before using tap water.  Additional information is available from the Safe Drinking Water Hotline (800-426-4791).

 

SOURCE WATER ASSESSMENT INFORMATION

 

This water supply obtains some or all of its water from another public water supply.  It is a consecutive water supply, where an originating parent supply provides drinking water to one or more downstream supplies.

 

Original Supply ID Original Supply Name
IA3000099 Central Water System

 

OTHER INFORMATION

 

Turbidity is an indicator of treatment filter performance and is regulated as a treatment technique.

 

CONTACT INFORMATION

 

For questions regarding this information or how you can get involved in decisions regarding the water system, please contact OKOBOJI WATER SUPPLY at 712-332-2550.