Overview and schedule of general maintenance activities for Stormwater and Rainwater Harvest and Use/Reuse Practices

Overview and schedule of general maintenance activities for Stormwater and Rainwater Harvest and Use/Reuse Practices Link to this table

First Year of Operation
Activity	Frequency	Time Period	Level of Effort	O&M Benefit
Check operation of mechanical parts like pumps	At least twice after the system becomes operational	During a storm event	2-4 hours	1
Check condition of first flush and high flow diverters	At least twice after storm events > 0.5 inches	Within the first 6 months	1-2 hours	1
Check for clogging	At least twice after storm events > 0.5 inches	Within the first 6 months	1-2 hours	1
Check for erosion downstream of the high flow diverter	At least twice after storm events > 0.5 inches	Within the first 6 months	1 hour	1
Check for leaks	At least twice after storm events > 0.5 inches	Within the first 6 months	1 hour	1
Check performance of water treatment system and adjust treatment parameters	After tank has filled up	Within first month	2 hours	4
After First Year of Operation
Activity	Frequency	Time Period	Level of Effort per Visit	O&M Benefit
Inspect and clean pre screening devices and first flush diverters	Quarterly	Seasonally	2 hours	1
Check and clean any filters to prevent clogging	3 times per year and/or after each event that exceeds the design capacity of the collection system		1-2 hours	1
Remove leaves and debris from the gutters and downspouts	Semi-annually	Spring and Fall	2-4 hours	1
Clean out tank to remove sediment and algae	Semi-annually	Spring and Fall	4 hours	1,4
Check and repair damage to collection surface and collection tanks	Annually	Spring or Fall	2-4 hours	1
Check and repair erosion along the diversion pathways	Annually	After large storm	1-2 hours	1
Check and repair any leaks	Annually	Spring or Fall	2-4 hours	1
Inspect and repair mosquito screens	Annually	Spring or Fall	1-2 hours	1
Clear overhanging vegetation and trees over roof	Annually	Winter		1
Winterize or disconnect the storage system before the winter	Annually	Late Fall	Depends on system	1
Check structural integrity of tank, pump, pipe, and electrical system and repair any damages as needed	Every 3 years	As convenient	Depends on repairs needed	1
After 5+ Years of Operation (non-routine maintenance)
Activity	Frequency	Time Period	Level of Effort per Visit	O&M Benefit*
After long term operation of the practice, some occasional and infrequent maintenance activities might be required, such as replacement of structural materials, conveyance equipment, or storage tanks.	As needed	As needed	Could be significant depending on the activity	1,4
Key to Maintenance Benefits: Proper stormwater flow and infiltration Creation and maintenance of wildlife habitat Creation and maintenance of pollinator habitat Nutrient cycling and storage Aesthetics and public enjoyment Carbon sequestration