If your water comes from the East Bay MUD surface water system
Most Alameda County residences receive water supplied by the East Bay Municipal Utility District (East Bay MUD), which sources its water primarily from treated surface water. Government testing of this public water system shows no health-based violations for lead. This testing measures lead levels in water collected at various points within the distribution system, including customer taps, to represent the water consumers receive.
The EPA’s most recent 90th percentile measurement for lead in this system was 0 mg/L as of the end of 2024, indicating that the majority of sampled locations had no detectable lead. While this does not guarantee an individual home’s water is free from lead, regional data like this provides a starting point for evaluating potential concerns.
If you want to know what 'detected', 'median', and 'range' mean in these water quality records
Government water quality reports use terms to summarize test results across many sampling sites. ‘Detected’ means an instrument found some amount of lead in the sample—this does not mean a violation or health risk. The ‘median’ is the middle value of all samples tested, showing the central tendency. ‘Range’ reveals the lowest and highest detected values among all samples. These statistics describe overall water system performance, but individual home water can vary due to plumbing materials and other factors.
If you are a homeowner reading the median and range for lead in the East Bay MUD system
With a 90th percentile lead level of 0 mg/L reported for the system, this reflects that at least 90% of sampling sites have nondetectable lead in water at the tap. However, local plumbing, such as lead-containing fixtures or solder, can still introduce lead into household water. Therefore, individual water testing at your home is the only way to know your specific lead level. This regional data shows that the treated water entering your home from the public system is well managed in terms of lead content.
If you want to reduce lead in your water regardless of current test results
The Pentair Lead in Water Filter is designed to reduce lead particles and dissolved lead ions effectively from residential water. It uses filtration media certified for lead removal, improving water safety and taste by lowering lead content at the tap. The system ships ready to configure with your existing plumbing setup, allowing easier adoption without specialized labor. Using this technology provides an additional layer of protection, especially in homes with older plumbing where lead risk may be higher.
If you plan to seek help or advice about lead treatment
Before discussing treatment options with experts, homeowners should record several details about their water situation. These include the source and supplier (East Bay MUD in Alameda County), the most recent water quality report data, any known plumbing materials, and results from any recent in-home lead testing. Having this information ready helps ensure tailored advice that fits your home's specific water profile.
In summary, Alameda County’s East Bay MUD shows no health-based lead violations and reports very low regional lead levels based on EPA testing. However, individual performance varies by home plumbing, so testing your water is essential. The Pentair Lead in Water Filter offers a proven way to reduce lead at the tap, providing peace of mind alongside municipal system management.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2024-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for EAST BAY MUD (CA0110005), surface water supply, serving 1442800 people: 0 health-based violations of 0 total; lead 90th percentile 0 mg/L
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.