Residents who participated in the 2022 Seacoast Private Initiative Pilot Project have all received their laboratory results and a “Be Well Informed” report. The following table is a summary of the results from these 84 wells.

   From these results we can make the following observations:

 

The Water Resource Board plans to present a more in depth analysis of the test results at Madbury Day in September.

 

2022 Well Initiative Test Results

Parameter

Limit

Number of wells
Exceeding Limit

% of Wells
Sampled

 

 

 

 

Total Coliform Bacteria

ABSENT

14

17%

 

 

 

 

E.coli Bacteria

ABSENT

0

0%

 

 

 

 

Arsenic

0.005 mg/L

31

37%

 

 

 

 

Radon

2000 pCi/L

40

48%

 

 

 

 

Uranium

0.03  mg/L

0

0%

 

 

 

 

Fluoride

4 mg/L0

0

0%

 

 

 

 

Nitrite

1 mg/L

0

0%

 

 

 

 

Nitrate

10 mg/L

2

2%

 

 

 

 

Chloride

250 mg/L

1

1%

 

 

 

 

Manganese

0.3 mg/L

1

1%

 

 

 

 

Iron

0.3 mg/L

2

2%

 

 

 

 

Lead

0.015 mg/L

1

1%

 

 

 

 

Lead Stagnant

0.015 mg/L

1

1%

 

 

 

 

Copper

1.3 mg/L

0

0%

 

 

 

 

Copper Stagnant

1.3 mg/L

0

0%

 

 

 

 

Sodium

250 mg/L

0

0

 

 

 

 

Sodium @ Low Sodium Diet Health Advisory

20 mg/L

35

42%

 

 

 

 

PFOA

12 ppt

3

4%

 

 

 

 

PFOS

15 ppt

1

1%

 

 

 

 

PFNA

11 ppt

0

0%

 

 

 

 

PFHxS

18 ppt

0

0%

 

 

 

 

pH less than 7

 

9

11%

 

 

 

 

pH @ 7

 

1

1%

 

 

 

 

pH greater than 7

 

74

88%

 

 

 

 

Hardness less than 60 mg/L (soft)

 

33

39%

 

 

 

 

Hardness 61-120 mg/L (moderate hard)

 

20

24%

 

 

 

 

Hardness 121-180 mg/L (hard)

 

18

21%

 

 

 

 

Hardness greater than 180 mg/L (very hard)

 

13

15%

 

 

 

 

Stagnant Lead Detected (First Draw)

 

38

45%

 

 

 

 

Lead Detected (Flushed)

 

8

10%

 

 

 

 

Stagnant Copper Detected (First Draw)

 

43

51%

 

 

 

 

Copper Detected (Flushed)

 

7

8%