Drinking Water
The City of Woodland’s water has changed from a groundwater source to treated surface water from the Sacramento River. This table lists some of the water quality substances that have improved since switching to treated surface water.
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Water Quality Substances
| Water Quality Parameter |
Groundwater |
Treated Surface Water |
Percentage of Reduction |
|---|---|---|---|
| Alkalinity (milligram / Liter as CaCO3) |
338 |
65 |
80.80% |
| Boron (milligram / Liter) |
2.35 |
0 (none detect) |
100% |
| Chlorine (max limit is 4.0) |
0.3 - 0.5 |
0.5 - 1.0 |
40 - 50% increased |
| Chloride (milligram / Liter) |
73 |
20 |
72.60% |
| Chromium VI (ppb) |
18 |
0 (none detected) |
100% |
| Lead (milligram / Liter) |
0 (none detected) |
0 (none detected) |
None detected |
| Magnesium (milligram / Liter) |
48 |
6 |
87.50% |
| Nitrate (as N) (milligram / Liter) |
20 - 40 |
0.23 |
99.20% |
| pH |
8.0 - 8.1 |
7.9 - 8.2 |
No significant change |
| Sodium (milligram / Liter) |
60 |
19 |
68.30% |
| Specific Conductance (EC) |
926 |
200 |
78.40% |
| Sulfate (milligram / Liter) |
38 |
7.6 |
80% |
| TDS (milligram / Liter) |
531 |
120 |
77.40% |
| Total Hardness as CACO3 (milligram / Liter) |
382 (22 grains) |
56 (3.5 grains) |
84.10% |