North Highlands Water Hardness & Quality Report (2026)

North Highlands, California (ZIP 95660) is served by the Sacramento Suburban Water District (SSWD), a utility providing water to approximately 194,444 people in Sacramento County. SSWD sources water from both groundwater wells in the Sacramento Valley Groundwater Basin and purchased surface water primarily from the Sacramento and American Rivers originating in the Sierra Nevada. Customers may receive 100% groundwater, 100% surface water, or a blend depending on availability and demand. No specific treatment plant names are documented, but standard treatment processes are applied to meet regulatory requirements.

North Highlands' supply draws from the Sacramento Valley Groundwater Basin, a thick sequence of Quaternary alluvial deposits and Tertiary sediments derived from erosion of the Sierra Nevada and Cascade Range. These formations are rich in calcium and magnesium-bearing minerals including limestone and dolomite fragments, which dissolve during groundwater percolation to impart a moderately mineralised character. Surface water from the Sacramento and American Rivers remains softer due to limited rock contact, but blending with harder groundwater influences the overall supply chemistry.

Moderately hard water leads to moderate scale buildup in water heaters, dishwashers, and coffee makers, reducing efficiency over time. Soap scum may appear on fixtures, and lathering can be slightly reduced, with hot water-using devices most affected by mineral precipitation. Regular maintenance including deliming with vinegar, installing drain screens, and flushing heaters is recommended; a water softener may benefit households noticing these effects. SSWD water meets all EPA Maximum Contaminant Level Goals (MCLGs), with all 49+ tested contaminants within safe levels; calcium and magnesium in hard water are safe and nutritious with no health risks. For detailed annual data, consult SSWD Consumer Confidence Reports.