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 2016 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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2016

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2009

2008

2007

2006

GARDEN CITY PARK WATER DISTRICT

2016 WATER QUALITY REPORT

TABLE OF DETECTED PARAMETERS

 
 
 

 

 

Contaminants

 

Violation

(Yes/No)

 

Date of

Sample

Level Detected

(Maximum) (Range)

Unit

Measure-

ment

 

 

MCLG

 

Regulatory Limit

(MCL or AL)

 

 

Likely Source of  Contaminant

 

Inorganic Contaminants

Copper

No

July / August / September 2014

ND - 0.3

0.1 (1)

mg/L

1.3

AL = 1.3

Corrosion of household plumbing systems; Erosion of natural deposits

Lead

No

July / August / September 2014

ND - 1.7

1.0 (1)

ug/L

1.3

AL = 15

Corrosion of household plumbing systems; Erosion of natural deposits

Manganese

No

06/09/16    ND - 0.02      ug/L

n/a

MCL = 300

Naturally occurring

Barium

No

03/08/16

0.01 -0.03

mg/L

n/a

MCL = 20  

Naturally occurring

Ammonia

No

06/09/16

ND - 1.3

mg/L

n/a

NONE

Naturally occurring

Sodium

No

06/09/16

18.0 - 50.0

mg/L

n/a

No MCL(2)

Naturally occurring

Iron

No

05/03/16

ND - 100.0

mg/L

n/a

MCL = 300

Naturally occurring

Fluoride

No

05/13/16    ND - 0.2      mg/L

n/a

MCL = 2.2

Naturally occurring

Zinc

No

03/07/16

ND - 0.04

mg/L

n/a

MCL = 5    

Naturally occurring

Nickel

No

03/08/16

ND - 0.7   

ug/L n/a

MCL = 100

Naturally occurring

Magnesium

No

06/09/16

ND - 21.0

ug/L

n/a

No MCL

Naturally occurring

Chloride

No

05/03/16

36.3 - 71.5

mg/L

n/a

MCL = 250

Naturally occurring

Calcium

No

06/09/16

16.0- 36.0

mg/L

n/a

No MCL

Naturally occurring

Nitrate

No

12/09/16

1.2- 6.8

mg/L

10

MCL = 10

Runoff from fertilizer and leaching from septic tanks and sewage

Sulfate

No

03/07/16

28.9 - 46.7

mg/L

n/a

MCL = 250

Naturally occurring

Perchlorate

No

03/07/16

ND - 1.0

ug/L

n/a

AL = 18 (3)

Fertilizer

Volatile Organic Contaminants

Tetrachloroethene

No

09/12/16

ND - 1.1

ug/L

0

MCL =  5   

Industrial/Commercial Discharge  

MTBE

No

09/12/16

ND - 0.66

ug/L

0

 MCL = 10   

Gasoline Additive

Total Trihalomethanes

No

12/05/16

ND - 5.6

ug/L

n/a

MCL = 80  

Disinfection By-Products

Radionuclides

Gross Alpha No

12/17/13

0.94 - 3.58 pCi/L

n/a

MCL = 15 Naturally occurring
Radium 226 & 228 No

12/17/13

0.09 - 1.84 pCi/L n/a  MCL = 5(4) Naturally occurring

Unregulated Contaminant Monitoring Rule (5)

1.4 Dioxane No

04/17/14

0.11 - 3.9 ug/L

n/a

MCL = 50 Industrial Discharge
Chromium No

09/02/14

ND - 1.0 ug/L 100  MCL = 100 Naturally deposits
Hexavalent Chromium No

05/27/14

ND - 1.1 ug/L n/a No MCL Naturally deposits and Industrial Discharge
Strontium No

05/27/14

77.8 - 86.7 ug/L n/a No MCL Naturally occurring
Chlorate No

04/17/14

ND - 140 ug/L n/a  No MCL Naturally occurring

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.

Action Level (AL) The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system much 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 per Liter is a measure of radioactivity in water.

(1) - During 2014 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 90% percentile level 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) - Perchlorate is an unregulated contaminant. However, the State Department of Health has established an action level of 18 ug/L.

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

(5) - UCMR3 - Unregulated Contaminant Monitoring Rule 3 is a Federal water quality sampling program where water suppliers sample and test their source water for one year. Results will be used by EPA to determine if the contaminants need to be regulated in the future.