Water delivered to homes in Sacramento County primarily comes from surface water sources managed by the Sacramento County Water Agency (SCWA) Laguna/Vineyard system. This system supplies water to nearly 185,000 people through over 50,900 connections. The water undergoes multiple treatment processes before reaching taps to reduce contaminants, including bacteria.
Common Belief: Bacteria Levels in Sacramento Water Are Constant and Clearly Defined
The public water system record shows there has been one health-based violation in the system's history, reflecting the ongoing challenges in maintaining bacterial standards. However, the record does not provide specific median or range values for bacteria levels, but it does indicate that treatment codes such as filtration and disinfection are in use. This means bacterial presence is monitored and managed but can vary over time and location within the system.
Common Belief: Bacteria Counts Do Not Change Much Across Seasons or Years
Data from the system's multiple treatment codes and recorded violations suggest that bacterial presence can fluctuate seasonally or over multi-year periods. Surface water sources are more exposed to environmental factors influencing bacteria levels. The system's record does not specify exact seasonal measurements, but the presence of various treatment steps indicates adaptations to changing water quality over time.
Common Belief: Plumbing Materials and Age Do Not Affect Bacteria Risk
While the system record focuses on source water quality and treatment, the composition and age of household plumbing can influence bacteria presence at the tap. Older pipes or materials that foster biofilm growth may increase bacterial risk. Since the recorded lead 90th percentile is zero, plumbing-related contaminants are low, but bacteria risk remains partly dependent on household plumbing conditions distinct from the source water system.
Common Belief: Treated Water in Sacramento Homes Is Uniformly Free From Bacteria
Treated water from the public system passes through processes coded 240, 341, 343, 344, 360, 401, 421, and 660, representing various filtration and chemical treatments aimed at reducing bacteria. Yet, bacteria can still enter household systems via biofilms and other factors. The C-Series Bacteria & Coliform (Well) Filter is designed to provide additional bacterial defense, especially in private well or home-specific contexts, complementing municipal treatment.
Common Belief: All Household Bacteria Treatment Options Are Equally Suitable for Daily Use
Choosing the right treatment system depends on household water demand and bacterial risk. The C-Series System offers scalable bacterial filtration capacity to match different daily volumes of water use. Evaluating flow rates required for cooking, cleaning, and drinking will ensure the filter’s capacity aligns with household needs without compromising effectiveness.
Common Belief: Homeowners Can Determine Bacteria Risk by Visual Inspection Alone
Visual signs are unreliable for assessing bacteria presence. It is advisable to start with simple, cost-effective checks such as water clarity and smell, but ultimately a laboratory bacterial test of household water is necessary to confirm contamination. Testing is the definitive step before selecting a bacterial filtration solution.
Final Recommendation: Homeowners concerned about bacteria should arrange for a laboratory bacterial analysis of their own household water. This test result provides the definitive evidence needed to confirm bacterial presence and determine if additional treatment, like the C-Series Bacteria & Coliform (Well) Filter, is appropriate for their specific water use and risk level.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2025-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for SCWA - LAGUNA/VINEYARD (CA3410029), surface water supply, serving 184896 people: 1 health-based violations of 2 total; lead 90th percentile 0 mg/L