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LandWatch State of Monterey County Report 1998

3.6 Water Quality

 

Ground water use in the Salinas Valley is adversely affected by nitrate contamination (Table 8). Of 240 wells listed in a 1995 report from the Monterey County Water Resources Agency, 1993 data indicated that 59 wells (25%) had nitrate concentrations exceeding the drinking water standard of 45 mg/l as NO3.(9)

Table 8--Nitrate Concentrations in Salinas Valley Wells

Location
# of Wells
Average NO3 Value&endash;1993 (mg/l)
Average Change 1987-1993 (mg/l)
Percent Change
1987-1993

400-Foot Aquifer
70
10.8
5.2
93%

180-Foot Aquifer
68
19.5
-1.3
-6%

Forebay
39
42.5
-3.1
-7%

Upper Valley
24
67.2
2.6
4%

East Side
39
85.1
-0.2
0%

All locations
240
36.1
0.9
3%

Locations Outside 400-foot Aquifer
170
53.6
-2.0
-4%

1998 Table of Contents:

1.0 Executive Summary

1.1 Findings
1.2 Recommendations
1.3 Areas of Future Study

2.0 Summary of Indicators

3.0 State of Monterey County 1998

3.1 Introduction
3.2 Population and Population Forecasts
3.3 Development&emdash;Approved and Pending Projects
3.4 Roads and Highways
3.5 Water Supply
3.6 Water Quality
3.7 Wastewater Treatment
3.8 Air Quality
3.9 Agricultural Land
3.10 Nonagricultural Land&emdash;Open Space
3.11 Affordable Housing
3.12 Schools
3.13 Economy
3.14 Rare, Threatened, and Endangered Species
3.15 General Plans

4.0 References

 
LandWatch's mission is to protect Monterey County's future by addressing climate change, community health, and social inequities in housing and infrastructure. By encouraging greater public participation in planning, we connect people to government, address human needs and inspire conservation of natural resources.

 

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Salinas, CA 93902-1876

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