PFOA
Not detected above reporting limit
- Sample date
- Reporting limit
- 0.004 µg/L
- Sample ID
- 380-112903-2
California
Water in Los Angeles, CA
Los Angeles County, California · City overview · Page updated 2026-10-20
PFAS testing · samples through 2024-09-11
Local water overview
Water summary
Where Los Angeles gets its water
Los Angeles Department of Water and Power is the likely provider for the mapped location in Los Angeles. Check your utility bill to confirm service at your address. The sources below describe the supply network; they do not establish water quality at your tap.
- Likely water system
- Los Angeles Department of Water and Power →
- Water sources
- San Fernando Groundwater Basin, Metropolitan Water District of Southern California, Los Angeles Aqueducts
- Watershed
- Los Angeles
Public drinking-water record
Drinking water in Los Angeles
Los Angeles Department of Water and Power is listed for this area. Check your utility bill to confirm who supplies your home. These are public water-system records, not a test of the tap water at your home.
PFAS testing in Los Angeles’s drinking water
No PFAS detection above the reporting limit in these results. Most recent PFAS sample shown here: .
PFOS
Not detected above reporting limit
- Sample date
- Reporting limit
- 0.004 µg/L
- Sample ID
- 380-112903-1
Selected latest compound samples from the published federal system record. Multiple sample points may share a date. A detection does not establish a violation. A non-detection does not mean PFAS-free. PFOA and PFOS limits and regulatory context are separate from these historical samples.
Lead and copper
Lead: 0.0039 mg/L, period ending 2023-12-31. These are system 90th-percentile results, not individual household concentrations.
Drinking-water compliance
No current violations flagged; past records available. 0 current flags and 7 historical records in the federal publication dated September 1, 2026. Historical records are not all active violations.
EPA UCMR5 source and sampling program · EPA ECHO compliance and lead/copper records · Testing and source records for Los Angeles Department of Water and Power
U.S. Drought Monitor ·
Drought around this place
This is the latest drought map in this publication, effective 2026-10-13; it is not a live report.
Los Angeles County, California: 0% of county area in D1 or worse; 6.67% in D0 or worse. D0 means abnormally dry. On 2026-10-06, D1 or worse covered 0%.
County area shares at or above each severity: D2 0% · D3 0% · D4 0%. These cumulative percentages overlap and must not be added. County conditions do not describe every point in a city or a drinking-water restriction.
California drought and water context
Open the drought map and historical playback · U.S. Drought Monitor source
Loading the local water map…
Drought, streams, rainfall & wells
Latest water conditions
Read each measure with its date. Rainfall, streams and groundwater can change at different rates.
Drought
Abnormally dryAbnormally dry
Abnormally dry affects part of the county; this is county context, not an exact city boundary.
Older report · 2026-10-13U.S. Drought Monitor
Published or effective 2026-10-13. Water Around last checked 2026-10-20T12:00:15.835637+00:00. This report may not describe conditions today.
Streamflow
Near seasonal rangeNear seasonal range
Flow at this gauge was within its usual range for the season.
Older report · 2026-10-19USGS daily mean discharge
Published or effective 2026-10-19. Water Around last checked 2026-10-20T11:59:36.282Z. This report may not describe conditions today.
Recent rainfall
0.091 inches in 30 days0.091 inches in 30 days
73% below the 1991–2020 station normal for this period.
Older report · 2026-10-17NOAA station observations
Published or effective 2026-10-17. Water Around last checked 2026-10-20T11:59:41.091Z. This report may not describe conditions today.
Groundwater
Method developingMonitoring is available
Measurements are available at nearby wells. An overall groundwater condition is not calculated from them.
5 nearby monitoring wellsYour public water system
Los Angeles Department of Water and Power
The mapped location falls within this system’s EPA service area. Confirm service to your home with the utility.
Los Angeles Department of Water and Power →CA1910067 · community
Local compliance cacheA local summary of reported violations is not available here. When federal records are available, you can read them in the drinking-water section above. Neither source is a live test of water at your tap.
Your watershed
Chavez Ravine-Los Angeles River
A watershed is the land area where rain and streams drain toward a shared outlet. It helps explain natural water conditions, but it may not match the area supplying your tap.
- Local watershed
- Chavez Ravine-Los Angeles River
- Broader basin
- Los Angeles
Below ground
Groundwater near Los Angeles
Aquifers can supply water; monitoring wells measure water levels at individual sites. One well does not describe an entire aquifer or your household well.
Groundwater sources
San Fernando Groundwater Basin
A documented groundwater source for the public-water network serving Los Angeles.
View Basin and Range basin-fill aquifers →Nearby monitoring
5 nearby monitoring wells
Detailed well pages are not available for these nearby sites yet.
Reading well data
What well measurements can tell you
A well’s water level does not tell us how much water an aquifer holds. Pumping totals alone do not show depletion, and a surface map does not show the aquifer’s full underground extent. To understand water quality in a private well, use tests from that well and local guidance.
California water planning
Water planning in Los Angeles
Los Angeles uses local water, groundwater and imported supplies, including the State Water Project and Colorado River. No single nearby river or lake explains its whole supply.
Partial records
Supply
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Urban supply
- Reporting period
- Plan cycle
Partial records
Demand
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Urban demand
- Reporting period
- Plan cycle
Partial records
Future demand
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Projected demand
- Reporting period
- Plan cycle
State records
Groundwater
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Groundwater
- Reporting period
- Plan cycle
Partial records
Reservoirs
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Reservoir
- Reporting period
- Observation
Partial records
Snowpack
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Snowpack
- Reporting period
- Observation
State records
Water planning
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Utility and groundwater plan
- Reporting period
- Plan cycle
Partial records
Imported water
About these records
These details come from official state plans and reports. A planning estimate describes what may be needed or supplied, not what was measured today.
- Measure
- Imported water
- Reporting period
- Plan cycle
Water planning regions
South Coast hydrologic regionHydrologic regionSources and limitations
These overview cards explain water management and planning; they do not reproduce each provider’s Urban Water Management Plan tables. State Water Project, Central Valley Project, Colorado River, local water and groundwater sources are shown separately.
- California Department of Water Resources: SGMA Portal and Basin PrioritizationBasin priority and plan status are governance indicators, not groundwater-level observations.
- California Department of Water Resources: Urban Water Management PlansPlanning scenarios and reliability assessments are utility-specific.
- California Department of Water Resources: California Water Data and reservoir/snow contextReservoir percent full and snowpack percent of average are different metrics.
Discovery
Compare nearby and related places
These places share geography or comparable data. Their water conditions may differ.
Rivers, lakes & drinking water
Water testing and assessments
Explore river and lake assessments, measurements taken nearby, drinking-water tests and dams. Each tells you something different about the area.
Official surface-water assessments
Assessment results vary
4 EPA water assessments are linked to this local watershed (HUC12).
0 supporting1 impaired3 unknown
See assessed waters and official status
Lincoln Park Lakeunknown · reporting cycle 2026
Not Assessed
EPA waterbody recordBelvedere Park Lakeunknown · reporting cycle 2026
Not Assessed
EPA waterbody recordLos Angeles River Reach 2 (Carson to Figueroa Street)impaired · reporting cycle 2026
Not Supporting
EPA waterbody recordHollenback Park Lakeunknown · reporting cycle 2026
Not Assessed
EPA waterbody recordMonitoring activity
251 sites0 observations0 characteristics
Water Quality Portal measurements from the surrounding area. More measurements can mean more monitoring—not worse water.
This bounded discovery is not the complete historical record and absence is not evidence of clean water.UCMR5 PFAS monitoring
16 reported detections
Across 480 compound results and 29 samples for this water system.
Detection is not the same as violation.A reported detection is not, by itself, a drinking-water violation or a statement about a household tap. EPA states UCMR results do not indicate compliance or noncompliance with PFAS MCLs.
See reported detection examples
lithium100 µg/L · sampled 12/27/2023
lithium88.8 µg/L · sampled 3/21/2024
lithium94.4 µg/L · sampled 6/5/2024
lithium80.2 µg/L · sampled 9/4/2024
lithium76.1 µg/L · sampled 12/27/2023
lithium62.7 µg/L · sampled 3/21/2024
lithium95.4 µg/L · sampled 6/5/2024
lithium68.7 µg/L · sampled 9/4/2024
Nearby dam inventory
113 nearby dam records
These dams are nearby, but may not supply your drinking water. Hazard potential describes the consequences of a failure; condition describes the dam itself.
Elysian →1.94 mi away · CA00069HazardHighConditionSatisfactory
Silver Lake →3.13 mi away · CA00081HazardHighConditionSatisfactory
Laguna Regulating Basin →4.62 mi away · CA00203HazardSignificantConditionSatisfactory
Mulholland →6.81 mi away · CA00078HazardHighConditionSatisfactory
Eagle Rock →7.16 mi away · CA00094HazardHighConditionFair
Waters around you
Rivers and lakes near Los Angeles
Nearby rivers and lakes from USGS maps. Proximity does not establish a drinking-water source, public access or shared water conditions.
We have no named river or lake to show in this area yet.
Smaller streams may still be present. This catalog does not include every waterbody.
Water sources
Where Los Angeles's water comes from
Los Angeles Department of Water and Power receives water from San Fernando Groundwater Basin, Metropolitan Water District of Southern California, and Los Angeles Aqueducts, according to the source records.
The links show sources and suppliers, not the amount being delivered today. Select one for its source record.
Sources traced upstreamSource coverage does not measure water quality or reliability.
Your water system
Sources and suppliers
Sources and conveyance
Sources and conveyance
Sources and relationships as a list
Los Angeles uses a combination of documented local and imported supplies. Imported sources are connected through the Los Angeles Aqueducts and regional Metropolitan Water District systems.
- Los Angeles Department of Water and Power uses groundwater from San Fernando Groundwater Basin. Current. The relationship is documented; a current delivered amount is not available.
- Los Angeles Department of Water and Power purchases from Metropolitan Water District of Southern California. Current. The relationship is documented; a current delivered amount is not available.
- Los Angeles Department of Water and Power supplied by Los Angeles Aqueducts. Current. The relationship is documented; a current delivered amount is not available.
- Metropolitan Water District of Southern California supplied by California Aqueduct. Current. The relationship is documented; a current delivered amount is not available.
- Metropolitan Water District of Southern California supplied by Colorado River Aqueduct. Current. The relationship is documented; a current delivered amount is not available.
- Los Angeles Aqueducts imports from Eastern Sierra runoff. Current. The relationship is documented; a current delivered amount is not available.
- California Aqueduct supplied by California State Water Project. Current. The relationship is documented; a current delivered amount is not available.
- Colorado River Aqueduct imports from Colorado River. Current. The relationship is documented; a current delivered amount is not available.
Water source types explained
Surface waterWater drawn from rivers, lakes, or reservoirs.
GroundwaterWater pumped from aquifers—bodies of rock or sediment that store and transmit groundwater, not underground lakes.
Wholesale waterA regional supplier can supply your local provider without serving your household directly.
Imported waterYour drinking-water source basin can differ from the watershed where you live.