Water Quality Report · Updated October 07, 2026
LAKEWOOD - CITY, WATER DEPT.
LAKEWOOD - CITY, WATER DEPT. delivers tap water graded D (63/100) by TapWaterSafety.org. The utility serves approximately 66,135 residents in LAKEWOOD, California using groundwater. The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline. For questions, the utility can be reached at 562-866-9771.
Is LAKEWOOD tap water safe to drink?
LAKEWOOD - CITY, WATER DEPT. delivers tap water that earns a grade of D (63/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including arsenic significantly above health guideline.
The utility serves 66,135 residents in LAKEWOOD, drawing from groundwater.
Public testing data identifies 16 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA5), Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Bromodichloromethane, Dibromochloromethane, Dibromoacetic acid, Chromium (hexavalent), Chloroform, Bromoform, Trichloroacetic acid, Dichloroacetic acid, Nitrate and nitrite, Uranium, 1,4-Dioxane, Nitrate. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for LAKEWOOD - CITY, WATER DEPT. (system ID CA1910239) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for LAKEWOOD residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for LAKEWOOD - CITY, WATER DEPT..
Arsenic significantly above health guideline
Moderate concernArsenic detected at 7.71 ppb, 1927x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 36.2 ppb, 362x above the EWG health guideline of 0.1 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 13.1 ppb, 219x above the EWG health guideline of 0.06 ppb.
Contact LAKEWOOD - CITY, WATER DEPT.
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for LAKEWOOD
Filters matched to the specific contaminants in this water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 63/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
7.71 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 1927× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
13.1 ppb | 0.06 | — | — | — | — | — | 219× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
22.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 148× over |
| Bromodichloromethane Disinfection byproduct |
5.61 ppb | 0.06 | — | — | — | — | — | 94× over |
| Dibromochloromethane Disinfection byproduct |
8.22 ppb | 0.1 | — | — | — | — | — | 82× over |
| Dibromoacetic acid Disinfection byproduct |
2.12 ppb | 0.03 | — | — | — | — | — | 71× over |
| Chromium (hexavalent) Heavy metal |
0.384 ppb | 0.02 | — | — | — | — | — | 19× over |
| Chloroform Disinfection byproduct |
4.99 ppb | 0.4 | — | — | — | — | — | 12× over |
| Bromoform Disinfection byproduct |
3.76 ppb | 0.5 | — | — | — | — | — | 7.5× over |
| Trichloroacetic acid Disinfection byproduct |
0.649 ppb | 0.1 | — | — | — | — | — | 6.5× over |
| Dichloroacetic acid Disinfection byproduct |
1.2 ppb | 0.2 | — | — | — | — | — | 6.0× over |
| Nitrate and nitrite Inorganic |
0.603 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.3× over |
| Uranium Radiological |
1.23 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 2.9× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.996 ppb | 0.35 | — | — | 50 | 1 | — | 2.8× over |
| Nitrate Inorganic |
0.364 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.6× over |
| Chlorate Disinfection byproduct |
102.9 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
80.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Vanadium Other |
2.26 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
3.3 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.61 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.167 ppb | 53.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.000911 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.453 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.312 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.239 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
LAKEWOOD - CITY, WATER DEPT. service area
This water system serves 1 community in Los Angeles County, California. Click any city for its dedicated tap water quality page.
Find the right filter for LAKEWOOD water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.