Performance Measure
Agency
Measure Name
Pounds of nitrogen discharged from major pollution point sources in the Chesapeake Bay watershed.
Measure Last Modified
Sep 21 2022 11:08
Measure Last Published
Aug 26 2022 02:41
Measure Status
Active
Data Source and Calculation
Permit holders are required to report the amount of pollution permitted to be discharged. Pounds of nutrients discharged each calendar year is obtained from the permit data available in Comprehensive Environmental Data System (CEDS). It is then compared to the baseline data, collected during calendar year 2004.
Associated Service Areas
SA CodeSA Name
51510Virginia Water Quality Improvement Fund
Measure ID44051510.001.001
Measure ClassAgency Key
Measure TypeOutput
Year TypeCalendar
Preferred TrendDecrease
FrequencyAnnually
Statistical UnitNumber
Baseline and Targets
Target NameDateResultNote
Baseline12/31/199927588064
Short Target 202312/31/2023
Long Target 202412/31/2024
Measure Results
YearResultExplanatory Note
1995
1996
1997
1998
199927,588,063.58
200028,136,022.20
200127,907,270.87
200227,424,353.77
200325,563,246.84
200425,002,857.19
200524,265,552.47
200623,603,998.67
200722,327,737.93
200821,387,165.39
200922,462,099.33
201022,426,587.93There are three reasons why the nitrogen loads have decreased below the short-term target, and are very close to the long-term target: Installation of nitrogen removal facilities has proceeded on a expedited schedule; Operation of the installed facilities is better than design expectations; and, Wastewater flows remain below design capacity for most of the facilities. Design capacity was the basis for establishing the load target at each facility. As population increases in the future, flows will approach design capacity and operational efficiencies will also approach design efficiencies. Reporting period is identified as the calendar year, ending December 31. Updates are expected in May, annually. Data from earlier years was provided to give a historical context for the nutrient loading numbers provided.
201116,679,908.43
201215,489,545.63Reporting period is identified as the calendar year, ending December 31. The next update expected in July.
201315,246,947.59Annual reporting requirements for this measure are on a calendar year basis and it is therefore imperative that all evaluations and analyses are done on calendar year as well.
201414,662,802.75Reporting period is identified as the calendar year, ending December 31.
201514,846,259.21Reporting period is identified as the calendar year, ending December 31.
201613,820,367.29Reporting period is identified as the calendar year, ending December 31.
201712,225,480.00Reporting period is identified as the calendar year, ending December 31.
201812,033,814.00Reporting period is identified as the calendar year, ending December 31.
201912,286,435.00Reporting period is identified as the calendar year, ending December 31.
202012,024,225.00Reporting period is identified as the calendar year, ending December 31.
202111,217,781.00Reporting period is identified as the calendar year, ending December 31.
2022
2023
- Run Date: 04/20/2024 06:30:24