Mariposa Public Utility District Wastewater Treatment Facility Improvements

6 Documents in Project


SCH Number
Lead Agency
Mariposa Public Utilities District (Mariposa Public Utility District)
Document Title
Mariposa Public Utility District Wastewater Treatment Facility Improvements
Document Type
MND - Mitigated Negative Declaration

Document Description
The operation of the WWTF and discharge are regulated through permit issued by the CVRWQCB, specifically NPDES Permit NO CA0079430, Order R5-2015-0041 adopted April 17, 2015. The permit specifically requires the District to construct tertiary treatment unit process in addition to the installation of new process to meet additional and more stringent discharge limitations. The CVRWQCB has adopted two time schedule orders for constituent limitations unattainable with the existing WWTF.

Contact Information
Mark L. Rowney
Mariposa Public Utility District
4992 Seventh Street P.O. Box 494
Mariposa, CA 95338

(209) 966-2515


37°28'45"N 119°57'32"W
Cross Streets
Miller Road and State Highway 140
Total Acres
Parcel #
013-190-029 and 013-190-030
State Highways
Hwy 140
Mariposa Co. Unified
Mariposa Creek

Notice of Completion

Review Period Start
Review Period End
Development Type
Waste Treatment:Other (Tertiary MGD: 0.610)
Project Issues
Other Issues Cumulative Effects Landuse Water Supply Water Quality Vegetation Toxic/Hazardous Soil Erosion/Compaction/Grading Sewer Capacity Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Biological Resources Archaeologic-Historic Air Quality Aesthetic/Visual
Reviewing Agencies
State Water Resources Control Board, Divison of Financial Assistance Caltrans, District 10 California Department of Parks and Recreation California Highway Patrol Department of Fish and Wildlife, Region 4 Department of Water Resources Native American Heritage Commission Regional Water Quality Control Bd., Region 5 (Fresno) Resources Agency State Water Resources Control Board, Division of Drinking Water, District 11 State Water Resources Control Board, Division of Water Quality
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