Earlier editions: 2026-09
Title 6 — SANITATION AND HEALTH›Chapter 19 — ONSITE WASTEWATER TREATMENT SYSTEMS
Yolo County Municipal Code Art. 13 Groundwater Protection
Yolo County Municipal Code · 2026-10 edition · updated 2026-10-03 · Yolo County
Cite as: Yolo County Municipal Code Article 13 · Text as of 2026-10-03
Sec. 6-19.1301. Areas with potential for groundwater pollution.¶
New systems located within areas that are determined to have a potential for nitrogen contamination in the groundwater due to dense development greater than one (1) dwelling unit (or equivalent) per gross acre on average, and soils with a percolation rate five (5) minutes per inch or faster (coarse to medium sand) and groundwater levels less than 8 (eight) feet below the bottom of the proposed dispersal field and where individual water wells are the source of water supply, the Director of Environmental Health shall require nitrogen reducing supplemental treatment unless cumulative impact studies determine that the groundwater will not be affected.
(Ord. 1469, eff. July 14, 2016)
Sec. 6-19.1302. Areas with impacted groundwater.¶
In areas with known elevated nitrogen levels in the groundwater due to septic system effluent and where individual water wells are the source of water supply, the Director of Environmental Health may require nitrogen reducing supplemental treatment for new or replacement systems.
(Ord. 1469, eff. July 14, 2016)
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