Holywell Lake - Sewage Summary

Summary for Holywell Lake 2021-2023

98 Spills | 607 hours

In the period we have records for, 2021-2023, sewage has been discharged in, or near (~3mi.), Holywell Lake 98 time(s).
Sewage has been discharged for a total of 607 hour(s).
In total: 0.06 year(s)* of elapsed time.

74.7
The stations, on average, have been monitoring for 74.7% of the total time we have data for.

Discharge Volume by Year

Hours and Spills by Year

Uptime Yearly Summary (Average)

Summary of Bodies Receiving Discharge

Back Stream Via Sws River Tone Via Sws Tributary Of River Tone Westford Stream

View Summaries Nearby

Holywell Lake - Yearly Summary

Summary for Year 2023

63 Spills | 422.5 hours

In 2023, sewage was discharged in, or near (~3mi.), Holywell Lake 63 time(s).
Sewage was discharged for a total of 422.5 hour(s).
In total: 0.04 year(s)* of elapsed time.

99.5
The stations, on average, have been monitoring for 99.5% of the total time in 2023.
Stations with missing data have been excluded from this calculation.

Worst Stations in 2023

1

48 Spills | 361.1 hours
Wellington WWTW

2

13 Spills | 60.2 hours
Westford Pumping Station

3

2 Spills | 1.1 hours
Station Mills CSO

A single station may appear twice when there are multiple individual outlets in the top 3.

Summary for Year 2022

33 Spills | 184.1 hours

In 2022, sewage was discharged in, or near (~3mi.), Holywell Lake 33 time(s).
Sewage was discharged for a total of 184.1 hour(s).
In total: 0.02 year(s)* of elapsed time.

99.7
The stations, on average, have been monitoring for 99.7% of the total time in 2022.
Stations with missing data have been excluded from this calculation.

Worst Stations in 2022

1

26 Spills | 178.8 hours
Wellington WWTW

2

4 Spills | 4.1 hours
Westford Pumping Station

3

3 Spills | 1.2 hours
Station Mills CSO

A single station may appear twice when there are multiple individual outlets in the top 3.

Summary for Year 2021

2 Spills | 0.3 hours

In 2021, sewage was discharged in, or near (~3mi.), Holywell Lake 2 time(s).
Sewage was discharged for a total of 0.3 hour(s).
In total: 0 year(s)* of elapsed time.

24.8
The stations, on average, have been monitoring for 24.8% of the total time in 2021.
Stations with missing data have been excluded from this calculation.

Worst Stations in 2021

1

2 Spills | 0.3 hours
Station Mills CSO

A single station may appear twice when there are multiple individual outlets in the top 3.

* - Elapsed time, in years or days, is the sum of time across the station(s) for which discharge event(s) have occured.

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