The policy applies in all wellhead protection area zones where the establishment, operation or maintenance of a system that collects, stores, transmits, treats or disposes of sewage would be a significant drinking water threat, in particular the discharge of stormwater from a stormwater management facility (future activity).

The municipality shall give due consideration to design standards for stormwater management facilities that would:

- minimize infiltration to groundwater from stormwater detention ponds, constructed wetlands, vegetated swales and other similar stormwater management components
- prohibit the use of infiltration trenches, infiltration galleries and other similar sub-surface components of the system that allow for the direct infiltration of the collected stormwater.

Monitoring policy MP-19 applies.

MP-19: Municipalities shall, by February 15 each year, provide to the local Source Protection Authority a brief summary report for the preceding calendar year that gives information on the activities taken toward implementing the policy.