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.
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% |