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Monmouth County Data
9/2002 to 1/2011

 

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For more information on private wells in Monmouth County or other public health issues, please contact the
Monmouth County Board of Health.

Health Officer
Michael Meddis, MPH, Public Health Coordinator

Address: 3435 Hwy. 9
Freehold, NJ 07728

Phone Number: (732) 431-7456

Visit the Monmouth County Health Dept. website at

http://co.monmouth.nj.us/page.aspx?ID=2028



Exceeding Gross Alpha MCL|Exceeding Nitrate MCL|Exceeding One or More MCL for VOCs|Exceeding Mercury MCL
  • The number of wells tested in a municipality reflects the number of real estate transactions involving homes with privates wells from September 2002 through January 2011.
  • Number of private wells tested may be low in some municipalities since they are served by public water systems.
Number of Wells Tested
Municipality Number of Wells Tested
Colts Neck Twp
620
Freehold Twp
204
Holmdel Twp
13
Howell Twp
1064
Manalapan Twp
299
Marlboro Twp
117
Middletown Twp
28
Millstone Twp
751
Tinton Falls Boro
21
Upper Freehold Twp
480
Wall Twp
61
Municipalities with less than 10 wells tested (Not identified on maps)
Aberdeen Twp
Allenhurst Boro
Allentown Boro
Asbury Park City
Atlantic Highlands Boro
Avon-By-The-Sea Boro
Belmar Boro
Bradley Beach Boro
Brielle Boro
Deal Boro
Eatontown Boro
Englishtown Boro
Fair Haven Boro
Farmingdale Boro
Freehold Boro
Hazlet Twp
Highlands Boro
Interlaken Boro
Keansburg Boro
Keyport Boro
Lake Como Boro

Little Silver Boro
Loch Arbour Village
Long Branch City
Manasquan Boro
Matawan Boro
Monmouth Beach Boro
Neptune City Boro
Neptune Twp
Ocean Twp
Oceanport Boro
Red Bank Boro
Roosevelt Boro
Rumson Boro
Sea Bright Boro
Sea Girt Boro
Shrewsbury Boro
Shrewsbury Twp
Spring Lake Boro
Sprin Lake Heights Boro
Union Beach Boro
West Long Branch Boro

Wells Exceeding the Gross Alpha MCL
of 15 pCi/L

Erosion of natural deposits of certain minerals that are radioactive may emit a form of radiation known as alpha radiation. The alpha radiation is emitted from both short-lived and long-lived radionuclides. In the Southern part of the state, it is probably the decay of radium and its radioisomers that result in the alpha radiation.   

Municipality
Number of wells
Total
Exceeded
Percent Exceeded
Max
pCi/l
Colts Neck Twp
451
0
0.0%
7.4
Freehold Twp
157
1
0.6%
23.3
Holmdel Twp
12
0
0.0%
4.7
Howell Twp
819
46
5.6%
95.9
Manalapan Twp
221
2
0.9%
15.7
Marlboro Twp
84
1
1.2%
26.6
Middletown Twp
22
0
0.0%
<5
Millstone Twp
569
4
0.7%
22.9
Tinton Falls Boro
14
0
0.0%
<5
Upper Freehold Twp
408
0
0.0%
14.1
Wall Twp
42
3
7.1%
45.6

Wells Exceeding the Nitrate MCL of 10 mg/L
Nitrate and in its reduced form nitrite are found in ground water due to a number of factors
including natural deposition, runoff from fertilizer use, leaching from septic tanks, and from sewage.

Municipality
Number of Wells
Total
Exceeded
Percentage Exceeded
Maximum
mg/L
Colts Neck Twp
620
0
0.0%
6.6
Freehold Twp
204
2
1.0%
17.8
Holmdel Twp

13

0
0.0%
ND
Howell Twp
1064
11
1.0%
18.5
Manalapan Twp
299
1
0.3%
10.2
Marlboro Twp
117
0
0.0%
6.29
Middletown Twp
28
0
0.0%
1.71
Millstone Twp
751
4
0.5%
14.1
Tinton Falls Boro
21
0
0.0%
5.2
Upper Freehold Twp
480
1
0.2%
12.5
Wall Twp
61
0
0.0%
7.1

Wells Exceeding one or more MCLs for Volatile Organic Chemicals (VOCs)
VOCs include solvents, degreasers, and components of gasoline. VOCs are found in ground water due to contamination by industrial or homeowner uses of these compounds.
Municipality
Number of wells
Total
Exceeded
Percent Exceeded

Colts Neck Twp
620
6
1.0%
Freehold Twp
204
0
0.0%
Holmdel Twp
13
0
0.0%
Howell Twp
1064
10
0.9%
Manalapan Twp
299
1
0.3%
Marlboro Twp
117
2
1.7%
Middletown Twp
28
0
0.0%
Millstone Twp
751
8
1.1%
Tinton Falls Boro
21
0
0.0%
Upper Freehold Twp
480
6
1.3%
Wall Twp
61
1
1.6%

Wells Exceeding the Mercury MCL of 2 ug/L

Mercury sources can include air deposition, past pesticide use, or discharges from industrial facilities. In addition certain ground water conditions could lead to mobilization of naturally occurring mercury from the subsoil.

Municipality
Number of wells
Number
Exceeded
% Detected
Max
ug/l
Colts Neck Twp
620
0
0.0%
1.4
Freehold Twp
204
0
0.0%
2
Holmdel Twp
13
0
0.0%
0.3
Howell Twp
1064
1
0.0%
3.2
Manalapan Twp
299
0
0.0%
0.2
Marlboro Twp
117
0
0.0%
0
Middletown Twp
28
0
0.0%
0
Millstone Twp
751
0
0.0%
0.3
Tinton Falls Boro
21
0
0.0%
0
Upper Freehold Twp
480
0
0.0%
0.35
Wall Twp
61
0
0.0%
0.2

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Office of Science
Dr. Gary A. Buchanan, Manager
Mailing Address:
Mail code 428-01, P.O. Box 420
P.O. Box 420
Trenton, NJ 0862

Phone: (609) 984-6070
Fax: (609) 292-7340


For Information regarding this site, please contact Terri Tucker.


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