Potential sources of bacteria and actions to address

Potential sources of bacteria and actions to address.
Link to this table.

General Category	Source	Action
Municipal Sanitary Infrastructure	Combined Sewer Overflows	Replace infrastructure, if possible
	Sanitary Sewer Bypasses/Overflows	Line sanitary sewer pipes
	Inflow and Infiltration	Minimize and eliminate through repairing damaged sewers
	Illicit discharges from unsewered communities	Detect and eliminate illicit discharges
Human Sanitary Sources	Leaky/failing septics	Update and enforce SSTS ordinances
		Educate homeowners on septic system maintenance and opportunities for replacement
		Implement higher standards for setbacks for installing septics near waterbodies
	Porta-potties	Ensure construction site temporary toiles have appropriate pollution prevention BMPs
Domestic pets	Dogs, cats, dog parks, walking trails, residential yard and sidewalk runoff (spring runoff after winter accumulation)	Pet waste disposal stations along trails, in dog parks, etc.
		Pass and enforce pet waste ordinances and educate pet owners about them
		Add infiltration BMPs downstream of parks/residential areas and upstream of stormwater pipes (i.e., somewhere between the park/residential area and the stormwater outfall so as to intercept and infiltrate some or all of the flow from these areas)
		Reduce transport from parks, residential, and other areas by the use of buffers and other disconnection of flow pathways (e.g. impervious surface, disconnection, downspout disconnection)
Urban wildlife	Rodents (raccoons, squirrels, etc.), deer, etc., birds (geese, ducks, swallows, etc.), areas where wildlife congregate such as fields, parks, and golf courses	Wildlife feeding bans and control of nuisance populations, including ducks and geese and other wildlife
		Remove community facilities such as vending machines for feeding ducks and geese
		Add buffers in riparian areas near waterbodies to deter waterfowl congregation
		Consider wildlife barriers if wildlife (e.g. raccoons) are found to be living in storm sewers
		When possible, use infiltration BMPs instead of detention ponds in residential developments and other areas where wildlife may congregate
Other Urban Sources (non-stormwater)	Excessive irrigation/overspray	Assess the extent to which irrigation over-spray occurs at city-owned facilities and eliminate overspray as appropriate
		Education on water conservation
MS4 Infrastructure	Illicit sanitary connections to MS4	Detect and eliminate illicit discharges
	Leaky sewer pipes	Line sewer pipes
	Biofilms/regrowth	Reduce dry weather flows, which provide conditions that promote bacteria growth. Dry weather flows could be from night time irrigation of lawns/parks or leaky stormsewer pipes.