Alameda County, CA · PWSID CA0110005
East Bay MUD lead service lines
3,935 lead or galvanized lines to replace
East Bay MUD reported 0 lead and 3,935 galvanized-requiring-replacement service lines out of 408,782 in its inventory. That's about 1 in 104 lines. Another 0 (0%) are still listed as unknown material.
Ranks #1 of 92 California systems with confirmed lead lines, and #126 nationally.
1.0% of East Bay MUD's service lines are lead or galvanized requiring replacement. That's higher than the California average (0.1%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 1.0%
- Unknown 0%
- Non-lead 99%
Total service lines reported: 408,782. Reported all required service line types. Population served: 1,468,000; 394,309 connections.
Lead test results
East Bay MUD's most recent 90th-percentile lead result (Jan 2022–Dec 2024) was not detected, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Progress since 2025 Q1
Reported lead and galvanized-requiring-replacement lines went from 3,935 in 2025 Q1 to 3,935 in 2026 Q3: no change. Lines of unknown material went from 0 to 0, no change.
Quarterly counts reported to EPA. A drop usually means lines were replaced or confirmed non-lead; a rise usually means more lines were identified. Replacement progress rankings.
Lead rule violations
EPA's data lists no Lead and Copper Rule violations for East Bay MUD since 2015. That covers testing, reporting, corrosion control and public notice requirements; it isn't a guarantee about any individual home.
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
East Bay MUD's main water source is surface water (rivers, lakes or reservoirs). It buys treated water from Contra Costa Water District. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while East Bay MUD is responsible for its own service line inventory and replacement program. It sells water to 3 other water systems: Contra Costa Water District, Trailer Haven Mobile Home Park, Alameda Point.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask East Bay MUD whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Alameda County
Cities served
- Lead pipes in Oakland
- Lead pipes in Berkeley
- Lead pipes in Richmond
- Lead pipes in San Leandro
- Lead pipes in San Ramon
- Lead pipes in Alameda
- Lead pipes in Walnut Creek
- Lead pipes in Danville
- Lead pipes in San Pablo
- Lead pipes in Hercules
- Lead pipes in El Cerrito
- Lead pipes in Lafayette
- Lead pipes in Orinda
- Lead pipes in Albany
- Lead pipes in Pinole
- Lead pipes in Moraga
- Lead pipes in Emeryville
- Lead pipes in Piedmont
ZIP codes served
ZIP codes whose center falls inside East Bay MUD's mapped service area (EPA service area boundaries). Neighboring utilities may serve parts of the same ZIP.
94501945029450694507945169452694528945309454694547945499456394564945759457794578945799458094583945959459694597946019460294603946059460694607946089460994610946119461294613946189461994621947029470394704947059470694707947089470994710947209480194803948049480594806
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| Alameda County Water District | 0 | 146 |
| City of Hayward | 0 | 0 |
| Dublin San Ramon Services District | 0 | 0 |
| City of Pleasanton | 0 | 0 |
| California Water Service - Livermore | 0 | 14,400 |
| City of Livermore | 0 | 0 |
Check another water system
Questions
Does East Bay MUD have lead pipes?
Yes. East Bay MUD reported 0 lead service lines and 3,935 galvanized lines that must be replaced, out of 408,782 total. 0 more are of unknown material.
How do I check if my home's service line is lead?
Look up your address on East Bay MUD's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will East Bay MUD replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has East Bay MUD had lead violations?
EPA's data shows no Lead and Copper Rule violations since 2015 for East Bay MUD.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "East Bay MUD lead service lines," https://leadpipemap.com/ca/east-bay-mud/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.