Areas of Concern for Impacted Groundwater
Areas of Special Concern
One of the purposes of the Alameda County Onsite Wastewater
and Individual/Small Water Systems Ordinance and Regulations
is to prevent environmental degradation of surface water and
groundwater from onsite disposal of private sewage to the
greatest extent possible.
The County regulations identify the following Areas of Special
Concern and include special provisions to protect
- Upper Alameda Creek Watershed, above Niles
- Happy Valley Area, Pleasanton (OWTS Moratorium)
- Lomitas Avenue Area, Livermore
Subsequent to the adoption of the County Regulations, Zone 7
Water Agency has identified the following four additional Areas
of Concern for high Nitrate Concentrations in Groundwater:
- Buena Vista Avenue, Livermore
- Mines Road, Livermore
- May School, Livermore
- Greenville Road, Livermore
Accordingly, Zone 7 has developed special OWTS permit
requirements for new OWTS application in these Areas of
Concern for use during the interim between adoption of Zone 7's
Nutrient Management Plan and ACEH's Local Agency
Management Program (LAMP).
The special permit requirements are designed to reduce the
amount of nitrogen loading from OWTS in the above listed areas
of concern over time by requiring replacement of old
conventional septic tank systems with new treatment systems
when the opportunity arises.
Please contact Zone 7 for additional information on these areas.