Nitrate [ppm]

ID4-18

ID4-11

ID1-12

ID4-10

ID1-10

Wilcox

Mean

SD

Min

Max

2006

<1.0

1.6

1.7

9.1

6.2

<1.0

4.7

3.7

1.6

9.1

2007

N/A

1.9

1.7

9.3

6.8

4.4

4.8

3.3

1.7

9.3

2010

1.6

2.2

1.7

8.7

7.9

1.6

4.0

3.4

1.6

8.7

2011

2

2

2

8

7.2

3.4

4.1

2.8

2.0

8.0

2012

<2

2.1

<1.7

8.7

7.3

4

5.5

3.0

2.1

8.7

2013

<2

2.5

1.7

9.3

7.2

5.7

5.3

3.2

1.7

9.3

2014

2.47

2.61

N/A

10.2

NA

NA

5.1

4.4

2.5

10.2

Arsenic [ppb]

2001

N/A

N/A

3

N/A

5

3

3.7

1.2

3.0

5.0

2004

N/A

N/A

2.2

N/A

3.3

3.4

3.0

0.7

2.2

3.4

2007

N/A

N/A

0

N/A

5.9

4.4

3.4

3.1

0.0

5.9

2010

N/A

N/A

0

N/A

7.1

6.1

4.4

3.8

0.0

7.1

2013

N/A

N/A

3

N/A

7.5

4.2

4.9

2.3

3.0

7.5

2014

N/A

2.23

3.79

N/A

12.2

7.8

6.3

3.9

2.2

12.2

Total dissolved solid (TDS) [ppm]

2001

620

390

290

530

460

250

423.3

141.7

250.0

620.0

2004

558

318

246

459

274

200

342.5

137.8

200.0

558.0

2007

590

390

260

490

250

210

365.0

151.8

210.0

590.0

2010

620

370

240

510

240

220

366.7

166.3

220.0

620.0

2013

620

340

270

500

280

230

373.3

153.6

230.0

620.0