Standard Water Quality Report
Download Raw Water Quality Data CSVSample Point - TWIN OAKS R (CLEAR) |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-04-25 | -- | -- | 3.58 | 3.86 | -- | -- | 9.7 | 678 | -- | <0.10 | 63.70 | 4.14 | -- | 9.63 | -- | 3.36 | -- | 308.1 | <5 | -- |
| 2024-05-02 | -- | 64.46 | 3.74 | 3.62 | -- | -- | 9.6 | 893 | 0 | <0.10 | 23.68 | 1.35 | -- | 9.39 | -- | 7.10 | -- | 519.1 | <5 | -- |
| 2024-08-07 | -- | 22.11 | 3.89 | 3.63 | -- | -- | 9.5 | 911 | 0 | <0.10 | 138.90 | 2.37 | -- | 12.77 | -- | 8.42 | -- | 404.7 | <5 | -- |
| Minimum: | -- | 22.11 | 3.58 | 3.62 | -- | -- | 9.5 | 678 | 0 | -- | 23.68 | 1.35 | -- | 9.39 | -- | 3.36 | -- | 308.1 | -- | -- |
| Maximum: | -- | 64.46 | 3.89 | 3.86 | -- | -- | 9.7 | 911 | 0 | -- | 138.90 | 4.14 | -- | 12.77 | -- | 8.42 | -- | 519.1 | -- | -- |
| Average: | -- | 43 | 3.74 | 3.70 | -- | -- | 9.6 | 827 | 0 | -- | 75.4 | 2.62 | -- | 10.60 | -- | 6.29 | -- | 410.6 | -- | -- |
| Range: | -- | 42.35 | 0.31 | 0.24 | -- | -- | 0.2 | 233 | 0 | -- | 115.22 | 2.79 | -- | 3.38 | -- | 5.06 | -- | 211 | -- | -- |
| Median: | -- | 43.29 | 3.74 | 3.63 | -- | -- | 9.6 | 893 | 0 | -- | 63.7 | 2.37 | -- | 9.63 | -- | 7.1 | -- | 404.7 | -- | -- |
| Loading (lb/day): | -- | -- | 27.63 | 0.84 | -- | 5.33 | -- | 3.87 | -- |
Sample Point Description:
This is one of two overflow structures for the Oak Twin (or Twin Oaks) collection pipes. The pipes themselves used to enter the system, but now bypass the system. Taken from river right pipe at Twin Oaks, the outflow is clear
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - PR01 |
Sample Point Description:
Potts Run downstream of UNT 26197 and treatment system, upstream bridge on Clark Road.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - PR02 |
Sample Point Description:
Potts Run upstream of UNT 26197 and treatment system
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - UNT01 |
Sample Point Description:
UNT 26197 at mouth
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - UNT02 |
Sample Point Description:
UNT 26197 upstream of treatment system final effluent
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - Twin Oaks Raw |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019-10-30 | -- | -- | -- | 3.8 | -- | -- | -- | 805 | -- | 0 | 70 | 3.89 | -- | 9.18 | -- | 7.32 | -- | 384 | 7 | -- |
| 2020-02-05 | -- | -- | 4.89 | 4.5 | -- | -- | 6.7 | 572 | -- | 0 | 44 | 6.16 | -- | 8.49 | -- | 5.3 | -- | 278 | 20 | -- |
| 2020-10-13 | -- | -- | 3.55 | 3.5 | -- | -- | 10.1 | 701 | 0 | 0 | 77 | 3.85 | -- | 6.15 | -- | 6.54 | -- | 322 | 4 | -- |
| 2021-03-17 | -- | 120 | 3.96 | 4.1 | -- | -- | 10 | 622 | 0 | 0 | 51 | 6.16 | -- | 9.48 | -- | 5.12 | -- | 278 | 14 | -- |
| 2021-09-09 | -- | 40.07 | 3.74 | 3.66 | -- | -- | 14.3 | 1160 | 0 | <20 | 102.7 | 5.31 | -- | 18.3 | -- | 12.1 | -- | 591 | <2.5 | -- |
| 2023-01-19 | -- | -- | 3.67 | 3.63 | -- | -- | 8.6 | 886 | 0 | <20 | 80.28 | 2.78 | -- | 11.5 | -- | 7.06 | -- | 418 | 4.5 | -- |
| 2023-10-25 | -- | -- | 3.8 | 3.58 | -- | -- | 10.6 | 948 | 0 | <0.1 | 120.34 | 4.95 | -- | 13.26 | -- | 8.51 | -- | 466.8 | <5 | -- |
| Minimum: | -- | 40.07 | 3.55 | 3.5 | -- | -- | 6.7 | 572 | 0 | 0 | 44 | 2.78 | -- | 6.15 | -- | 5.12 | -- | 278 | 4 | -- |
| Maximum: | -- | 120 | 4.89 | 4.5 | -- | -- | 14.3 | 1160 | 0 | 0 | 120.34 | 6.16 | -- | 18.3 | -- | 12.1 | -- | 591 | 20 | -- |
| Average: | -- | 80 | 3.94 | 3.82 | -- | -- | 10.1 | 813 | 0 | 0 | 77.9 | 4.73 | -- | 10.91 | -- | 7.42 | -- | 391.1 | 9.9 | -- |
| Range: | -- | 79.93 | 1.34 | 1 | -- | -- | 7.6 | 588 | 0 | 0 | 76.34 | 3.38 | -- | 12.15 | -- | 6.98 | -- | 313 | 16 | -- |
| Median: | -- | 80.04 | 3.77 | 3.66 | -- | -- | 10.05 | 805 | 0 | 0 | 77 | 4.95 | -- | 9.48 | -- | 7.06 | -- | 384 | 7 | -- |
| Loading (lb/day): | -- | -- | 61.51 | 5.72 | -- | 11.24 | -- | 6.61 | -- |
Sample Point Description:
Raw sample point before collecting raw from two separate twin oaks pipes (from 2019 to 2023)
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - No. 3 Raw |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020-10-13 | -- | -- | 3.12 | 3.1 | -- | -- | 14 | 931 | 0 | 0 | 129 | 4.31 | -- | 4 | -- | 12.12 | -- | 298 | <2 | -- |
| 2021-09-09 | -- | 9.46 | 3.09 | 3.08 | -- | -- | 16.2 | 784 | 0 | <20 | 122.7 | 3.72 | -- | 2.97 | -- | 10.4 | -- | 189 | <2.5 | -- |
| 2023-01-19 | -- | -- | 3.25 | 3.19 | -- | -- | 7.2 | 570 | 0 | <20 | 97.52 | 5.15 | -- | 1.79 | -- | 6.72 | -- | 205 | <2 | -- |
| 2023-04-25 | -- | -- | 3.31 | 3.18 | -- | -- | 8.9 | 679 | -- | <0.10 | 130.92 | 2.86 | -- | 2.22 | -- | 5.40 | -- | 216.4 | <5 | -- |
| 2024-08-07 | -- | 40.87 | 3.29 | 3.02 | -- | -- | 10 | 892 | 0 | <0.10 | 186.56 | 3.32 | -- | 3.02 | -- | 9.91 | -- | 269.0 | <5 | -- |
| 2024-10-31 | -- | 27.49 | 3.12 | 3.04 | -- | -- | 11.7 | 941 | 0 | <0.10 | 218.50 | 5.07 | -- | 3.16 | -- | 10.80 | -- | 321.4 | <5 | -- |
| Minimum: | -- | 9.46 | 3.09 | 3.02 | -- | -- | 7.2 | 570 | 0 | 0 | 97.52 | 2.86 | -- | 1.79 | -- | 5.40 | -- | 189 | -- | -- |
| Maximum: | -- | 40.87 | 3.31 | 3.19 | -- | -- | 16.2 | 941 | 0 | 0 | 218.50 | 5.15 | -- | 4 | -- | 12.12 | -- | 321.4 | -- | -- |
| Average: | -- | 26 | 3.20 | 3.10 | -- | -- | 11.3 | 800 | 0 | 0 | 147.5 | 4.07 | -- | 2.86 | -- | 9.23 | -- | 249.8 | -- | -- |
| Range: | -- | 31.41 | 0.22 | 0.17 | -- | -- | 9 | 371 | 0 | 0 | 120.98 | 2.29 | -- | 2.21 | -- | 6.72 | -- | 132.4 | -- | -- |
| Median: | -- | 27.49 | 3.19 | 3.09 | -- | -- | 10.85 | 838 | 0 | 0 | 129.96 | 4.02 | -- | 3 | -- | 10.16 | -- | 242.7 | -- | -- |
| Loading (lb/day): | -- | -- | 59.27 | 1.24 | -- | 0.96 | -- | 3.21 | -- |
Sample Point Description:
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - TWIN OAKS L (RED) |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023-04-25 | -- | -- | 4.06 | 3.65 | -- | -- | 9.9 | 771 | -- | <0.10 | 64.09 | 1.85 | -- | 10.16 | -- | 4.04 | -- | 340.2 | <5 | -- |
| 2024-05-02 | -- | 61.23 | 3.98 | 4.10 | -- | -- | 9.6 | 637 | 0 | <0.10 | 196.21 | 4.78 | -- | 8.71 | -- | 6.65 | -- | 341.0 | 5 | -- |
| 2024-08-07 | -- | 42.12 | 4.03 | 3.72 | -- | -- | 9.8 | 884 | 0 | <0.10 | 93.72 | 7.40 | -- | 13.12 | -- | 7.25 | -- | 399.8 | <5 | -- |
| Minimum: | -- | 42.12 | 3.98 | 3.65 | -- | -- | 9.6 | 637 | 0 | -- | 64.09 | 1.85 | -- | 8.71 | -- | 4.04 | -- | 340.2 | 5 | -- |
| Maximum: | -- | 61.23 | 4.06 | 4.10 | -- | -- | 9.9 | 884 | 0 | -- | 196.21 | 7.40 | -- | 13.12 | -- | 7.25 | -- | 399.8 | 5 | -- |
| Average: | -- | 52 | 4.02 | 3.82 | -- | -- | 9.8 | 764 | 0 | -- | 118.0 | 4.68 | -- | 10.66 | -- | 5.98 | -- | 360.3 | 5.0 | -- |
| Range: | -- | 19.11 | 0.08 | 0.45 | -- | -- | 0.3 | 247 | 0 | -- | 132.12 | 5.55 | -- | 4.41 | -- | 3.21 | -- | 59.6 | 0 | -- |
| Median: | -- | 51.68 | 4.03 | 3.72 | -- | -- | 9.8 | 771 | 0 | -- | 93.72 | 4.78 | -- | 10.16 | -- | 6.65 | -- | 341 | 5 | -- |
| Loading (lb/day): | -- | -- | 95.93 | 3.63 | -- | 6.53 | -- | 4.28 | -- |
Sample Point Description:
The other of the Oak Twin (or Twin Oaks) collection pipes. Taken from river left pipe at Twin Oaks, the outflow is stained red
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - VFP 1 |
Sample Point Description:
Raw water entering VFP1
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - VFP 2 |
Sample Point Description:
Raw water entering VFP2
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - VFPs Combined Outflow |
Sample Point Description:
Outflow of VFPs is one pipe, this flows into the settling pond
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - Final |
Sample Point Description:
Final outflow, out of settling pond
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
Sample Point - PR BYPASS |
Date | Method of Flow | Flow - Field (gal/min) | pH - Field (S.U.) | pH - Lab (S.U.) | ORP - Field (mvolts) | DO - Field (mg/L) | Temp - Field (C) | Cond - Lab (umhos/cm) | Alkalinity - Field (mg/L) | Alkalinity - Lab (mg/L) | Acidity - Lab (mg/L) | T. Fe - Lab (mg/L) | D. Fe - Lab (mg/L) | T. Mn - Lab (mg/L) | D. Mn - Lab (mg/L) | T. Al - Lab (mg/L) | D. Al - Lab (mg/L) | SO4 - Lab (mg/L) | TSS - Lab (mg/L) | Ferrous Iron (mg/L) Lab |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020-02-05 | -- | 222.23 | 3.31 | 3.3 | -- | -- | 7.1 | 626 | -- | 0 | 85 | 5.88 | -- | 4.49 | -- | 6.89 | -- | 238 | 6 | -- |
| 2021-03-17 | -- | 63.25 | 2.59 | 3.1 | -- | -- | 11 | 734 | 0 | 0 | 98 | 5.55 | -- | 2.5 | -- | 6.38 | -- | 218 | <2 | -- |
| 2023-04-25 | -- | 4.07 | 3.15 | 3.16 | -- | -- | 9.9 | 686 | -- | <0.10 | 150.52 | 1.23 | -- | 2.19 | -- | 5.77 | -- | 211.0 | <5 | -- |
| Minimum: | -- | 4.07 | 2.59 | 3.1 | -- | -- | 7.1 | 626 | 0 | 0 | 85 | 1.23 | -- | 2.19 | -- | 5.77 | -- | 211.0 | 6 | -- |
| Maximum: | -- | 222.23 | 3.31 | 3.3 | -- | -- | 11 | 734 | 0 | 0 | 150.52 | 5.88 | -- | 4.49 | -- | 6.89 | -- | 238 | 6 | -- |
| Average: | -- | 97 | 3.02 | 3.19 | -- | -- | 9.3 | 682 | 0 | 0 | 111.2 | 4.22 | -- | 3.06 | -- | 6.35 | -- | 222.3 | 6.0 | -- |
| Range: | -- | 218.16 | 0.72 | 0.2 | -- | -- | 3.9 | 108 | 0 | 0 | 65.52 | 4.65 | -- | 2.3 | -- | 1.12 | -- | 27 | 0 | -- |
| Median: | -- | 63.25 | 3.15 | 3.16 | -- | -- | 9.9 | 686 | 0 | 0 | 98 | 5.55 | -- | 2.5 | -- | 6.38 | -- | 218 | 6 | -- |
| Loading (lb/day): | -- | -- | 102.97 | 6.66 | -- | 4.67 | -- | 7.85 | -- |
Sample Point Description:
System bypass pipe, only flows during high flow conditions.
- Records with no value are not included in statistical calculations.
- Values lower than the minimum detection limit are assumed to be 0.
- Average pH is calculated using the arithmetic mean of pH values. Hydronium ion concentrations were not used.
- This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License.
To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/2.5/ or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.