Garden City Park Water

Annual Water Quality Report

  Over the past several years, a full report on the annual test results has been published by the Garden City Park Water District. The full report for 2019 is included in this newsletter.
  Each year, every water district is required to provide a comprehensive report on the quality of the water delivered to its customers.
  Your District routinely monitors drinking water quality. Each of our wells is tested before distribution. All test results are reviewed by the Department of Health and must be within State and County limits or water cannot be distributed to the public.
  Again this year the Garden City Park Water District is pleased to report that the water supplied to the community meets all the standards required by the U.S. Environmental Protection Agency, the New York Department of Health, and the Nassau County Department of Health.

 

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2018

2017

2016

2015

2014

2013

2012

GARDEN CITY PARK WATER DISTRICT

2019 WATER QUALITY REPORT

TABLE OF DETECTED PARAMETERS

 

 

 

 

 

Contaminants

 

Violation

(Yes/No)

 

Date of Sample

 

Level Detected (Maximum) (Range)

 

UNIT MEASUREMENT

 

MCLG

 

Regulatory Limit

(MCL or AL)

 

Likely Source of Contaminant

 

Inorganic Contaminants

Copper

No

July / August 2017

0.01 - 0.088 

mg/L

1.3

AL = 1.3

Corrosion of household plumbing systems; Erosion of natural deposits

Lead

No

July / August 2017

   
     ND - 5.6
         1.7((1)

mg/L

0

AL = 15

Corrosion of household plumbing systems; Erosion of natural deposits

Barium

No

02/28/19

0.013 - 0.03

mg/L

2.0

MCL = 2.0  

Naturally occurring

Ammonia

No

01/10/19

ND - 0.53

mg/L

n/a

NONE

Naturally occurring

Sodium

No

01/16/19

19.2 - 45.2

mg/L

n/a

No MCL(2)

Naturally occurring

Iron

No

02/11/19

ND - 60

ug/L

n/a

MCL = 300

Naturally occurring

Zinc

No

01/16/19

MD - 0.053

mg/L

n/a

MCL = 5    

Naturally occurring

Nickel

No

01/28/19

0.0005 - 0.0022

ug/L

n/a

No MCL

Naturally occurring

Manganese

No

01/28/19

        9.0 - 9.8

           ug/L

n/a

MCL = 300

Naturally occurring

Chloride

No

01/28/19

42.8 - 47.5

mg/L

n/a

MCL = 250

Naturally occurring

Calcium

No

02/28/19

16.5 - 21.0

mg/L

n/a

No MCL

Naturally occurring

Nitrate

No

02/28/19

4.3 - 7.5

mg/L

1.0

MCL = 10

Runoff from fertilizer and leaching from septic tanks and sewage

Nitrite

No

03/04/19

ND - 0.39

mg/L

n/a

MCL = 1.0

Runoff from fertilizer and leaching from septic tanks and sewage

Calcium Hardness

No

02/28/19

41.5 - 52.4 m

mg/L

n/a

No MCL

Naturally occurring

Total Hardness

     No

01/29/19

 81.9 - 102.0

mg/L

n/a

No MCL

Naturally occurring

Total Alkalinity

     No

01/16/19

45.1 - 67.0

mg/L

n/a

No MCL

Naturally occurring

Total Dissolved Solids (TDS)

     No

02/11/19

169.0 - 217.0

mg/L

n/a

No MCL

Naturally occurring

Sulfate

     No

01/29/19

30.4 - 46.5

mg/L

n/a

MCL = 250

Naturally occurring

Volatile Organic Contaminants

Tetrachloroethene

     No

09/09/19 

ND - 0.88

         ug/L

0

MCL =  5  

Industrial/Commercial Discharge

MTBE

     No

06/24/19 

ND - 0.63

         ug/L

0

 MCL = 10   

Gasoline Additive

Disinfection By-Products

Total Trihalomethanes (TTHMs)

     No

 

10/17/19

 

1.2 - 3.2

         ug/L

n/a

MCL = 80

Disinfection By-Products

Radionuclide

Gross Alpha

     No

02/06/19 

1.53  - 3.52

pCi/L

0

MCL = 15

Naturally occurring

Gross Beta

     No

02/14/19 

3.11 - 3.78

pCi/L

0

MCL = 50

Naturally occurring

Radium 226 & 228

     No

02/06/19 

2.11 - 3.05

pCi/L

0

MCL = 5(3)

Naturally occurring

Uranium

     No

   02/06/19

0.77 - .76

ug/L

n/a

MCL = 30

Naturally occurring

Perfluorochemicals

Perfluoroheptanoic Acid

     No

   07/31/19

ND - 4.5

ng/i

0

MCL = 50,000

Industrial Discharge

Perfluorohexanesulfonic Acid

     No

   07/25/19

ND -8.1

ng/i

0

MCL = 50,000

Industrial Discharge

Perfluorononanoic Acid

     No

   07/31/19

ND - 9.1

ng/i

0

MCL = 50,000

Industrial Discharge

Perfluorooctanesulfonic Acid (PFOS)

     No

   07/31/19

ND - 14.6

ng/i

0

HA = 70

Industrial Discharge

Perfluorooctanoic Acid (PFOA)

     No

   07/31/19

ND - 19.1

ng/i

0

HA = 70

Industrial Discharge

Unregulated Contaminant Monitoring Rule - Phase 3 (UCMR3)

1.4-Dioxane

     No

   07/10/19

0.17 - 7.1

ug/I

n/a

HA = 35

Industrial Discharge

Hexavelent Chromium

     No

   05/27/14

ND - 1.1

ug/I

n/a

No MCL

Naturally deposits and Industrial Discharge

Strontium

     No

   05/27/14

77.8 - 86.7

ug/I

n/a

HA = 4000

Naturally occurring

Chlorate

     No

   04/17/14

ND - 140

ug/I

n/a

No MCL

Naturally occurring

Bromide

     No

   01/17/19

ND - 111.0

ug/I

n/a

No MCL

Naturally occurring

Unregulated Contaminant Monitoring Rule - Phase 4 (UCMR4)

Manganese

     No

   01/17/19

0.62 -30.8

ug/I

n/a

MCL=300 (5)

Naturally occurring

HAA5

     No

   07/30/19

0.33 - 1.3

ug/I

n/a

MCL = 60

Disinfection By-Products

HAA6Br

     No

   07/30/19

0.33 - 2.06

ug/I

n/a

No MCL

Disinfection By-Products

HAA9

     No

   07/30/19

0.33 - 2.06

ug/I

n/a

No MCL

Disinfection By-Products

 

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.

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.

Maximum Residual Disinfection 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 Disinfection 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.

Health Advisory (HA) - An estimate of acceptable drinking water levels for a chemical substance based on health effects information; a health advisory is not a legally enforceable Federal standard, but serves as technical guid­ance to assist Federal, State and local officials.

Action Level (AL) - The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

Milligrams per liter (mg/l) - Corresponds to one part of liquid in one million parts of liquid (parts per million - ppm).

Micrograms per liter (ug/l) - Corresponds to one part of liquid in one billion parts of liquid (parts per billion - ppb).

Non-Detects (ND) - Laboratory analysis indicates that the constituent is not present.

pCi/L - pico Curies perLiter is a measure of radioactivity in water.

                                                (1)- During 2017, we collected and analyzed 30 samples for lead and copper. The action levels for both lead and copper were not exceeded at any site

                                                       tested. The values reported for lead and copper represent the  90th percentile.           

                                                      A percentile is a value on a scale of 100 that indicates the percent of a distribution that is equal to or below it. The 90th percentile is equal to or greater

                                                       than 90% of the lead and copper values detected at your water system. In our sampling program, the 90th percentile value is the 4th highest result.

(2)- No MCL has been established for sodium. However, 20 mg/l is a recommended guideline for people on high restricted sodium diets and 270 mg/l for     

        those on moderate sodium diets.

(3)- MCL for Radium 226 and 228 is a combined total Radium = 5 pCi/L.

(4)- Unregulated Contaminant Monitoring Rule is a Federal water quality sampling program where water suppliers sample and test their source water point of entry for 1

        year. Results will be used by the USEPA to determine if the contaminants need to be regulated in the future.

(5)- If iron and manganese are present, the total concentration of both should not exceed 500 ug/l.