Innovative alternative septic system performance
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Innovative/Alternative Septic System Performance. System Performance and Tracking it with the Carmody Database. Barnstable County Department of Health and Environment. By The Numbers. Permit Breakdown by Town and System Type. Box-Whisker Diagrams. What are they?. Min/Max Value.

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Innovative/Alternative Septic System Performance

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Innovative alternative septic system performance

Innovative/Alternative Septic System Performance

System Performance and Tracking it with the Carmody Database

Barnstable County Department of Health and Environment


Innovative alternative septic system performance

By The Numbers

Permit Breakdown by Town and System Type


Box whisker diagrams

Box-WhiskerDiagrams

What are they?

Min/Max Value

Min/Max Value

Box

Median – Middle Value

Whiskers

50%

25%

25%

Probability Density Graph (“Bell Curve”)


Box whisker diagrams1

Box-Whisker Diagrams

What Can We Use Them For?

A – A “Good” System. Box and whiskers are short and compact.

B – A “Bad” System. Results are all over the place. Box and whiskers are stretched out.

C – A “Consistently Bad” System. Compact but well above TN limit (19 mg/l)

D – A “Usually Pretty Good” System. Compact but maybe a couple of high results.

A

B

C

D


Single family all types by individual system

Single Family all Types by Individual System

Three or More Samples with Full Nitrogen Series

  • 761 systems with 3 or more TN samples

  • 569 of 761 (75%) with median TN <19 mg/l


Single family all types orleans

Single Family all Types (Orleans)

Three or More Samples with Full Nitrogen Series

  • 12 systems with 3 or more TN samples

  • 8 of 12 (67%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family all Types by System Type

Three or More Samples with Full Nitrogen Series


Innovative alternative septic system performance

Single Family Advantex (County)

Three or More Samples with Full Nitrogen Series

  • 27 systems with 3 or more TN samples

  • 21 of 27 (78%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family Bioclere (County)

Three or More Samples with Full Nitrogen Series

  • 43 systems with 3 or more TN samples

  • 32 of 43 (74%) with median TN <19 mg/l


Single family fast county

Single Family FAST (County)

Three or More Samples with Full Nitrogen Series

  • 442 systems with 3 or more TN samples

  • 355 of 442 (80%) with median TN <19 mg/l


Single family fast orleans

Single Family FAST (Orleans)

Three or More Samples with Full Nitrogen Series

  • 7 systems with 3 or more TN samples

  • 6 of 7 (86%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family OMNI RSF (County)

Three or More Samples with Full Nitrogen Series

  • 51 systems with 3 or more TN samples

  • 30 of 51 (51%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family Generic RSF (County)

Three or More Samples with Full Nitrogen Series

  • 16 systems with 3 or more TN samples

  • 9 of 16 (56%) with median TN <19 mg/l

  • 10 of 16 (63%) with median TN <25 mg/l


Innovative alternative septic system performance

Single Family RUCK (County)

Three or More Samples with Full Nitrogen Series

  • 22 systems with 3 or more TN samples

  • 11 of 22 (50%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family Septitech (County)

Three or More Samples with Full Nitrogen Series

  • 45 systems with 3 or more TN samples

  • 15 of 45 (33%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family Septitech

Three or More Samples with Full Nitrogen Series


Innovative alternative septic system performance

Single Family Singulair (County)

Three or More Samples with Full Nitrogen Series

  • 90 systems with 3 or more TN samples

  • 81 of 90 (90%) with median TN <19 mg/l


Innovative alternative septic system performance

Single Family Waterloo Biofilter (County)

Three or More Samples with Full Nitrogen Series

  • 11 systems with 3 or more TN samples

  • 7 of 11 (64%) with median TN <19 mg/l


Innovative alternative septic system performance

Nitrex System at 15 Dory Lane, Eastham

Influent versus Effluent Total Nitrogen

Design Flow = 9,900 gpd

40 Houses at Buildout

30 Houses currently occupied, with 6 seasonal


Innovative alternative septic system performance

Single Family all Types by System Type

Three or More Samples with Full Nitrogen Series


Innovative alternative septic system performance

Keeping Track of it All…

Quickly Identifying Poorly Performing Systems

Sample Reports

Use to obtain a list of the most recent sample exceedances (anything over 19 mg/l)

Two 25% Exceedances

Use to generate a list of systems with two samples exceeding 19mg/l by 25% (24mg/l).

One 50% Exceedance

Use to generate a list of systems with one sample exceeding 19 mg/l by 50% (30 mg/l)


Innovative alternative septic system performance

Keeping Track of it All…

Sample Reports Messages

Amount of the Exceedance

Exceedance Percentage

Exceeding Parameter

Number of Consecutive Exceedances

25.83 mg/L > 19mg/L(36%) for Total Nitrogen 1 Consecutive 4 Non-Consecutive (25.83,8.54,43.4,29.35,24.1)

Number of Non-Consecutive Exceedances

Results from the Last Five Samples


Innovative alternative septic system performance

Keeping Track of it All…

Quickly Identifying Poorly Performing Systems

Sample Reports

Use to obtain a list of the most recent sample exceedances (anything over 19 mg/l)

Two 25% Exceedances

Use to generate a list of systems with two samples exceeding 19mg/l by 25% (24mg/l).

One 50% Exceedance

Use to generate a list of systems with one sample exceeding 19 mg/l by 50% (30 mg/l)


Innovative alternative septic system performance

Keeping Track of it All…

Sample Exceedance Report

Select the Report Type: 2 over 24mg/l, 1 over 30mg/l or merged report.

Export the current list to MS EXCEL

List of the last 5 samples

Remove the flag for this system. Will reappear on this list with another exceedance.


Innovative alternative septic system performance

Keeping Track of it All…

Exporting the Sample Exceedance Report to EXCEL


Innovative alternative septic system performance

Keeping Track of it All…

“Cleaned Up” Sample Exceedance Report

  • Exceedance reports will be delivered semi-annually.

  • BOH will decide what action to take, since each BOH will likely have a different policy.


Innovative alternative septic system performance1

Innovative/Alternative Septic System Performance

System Performance and Tracking it with the Carmody Database

Barnstable County Department of Health and Environment


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