Water Quality Report · Updated May 12, 2026
TORRANCE-CITY, WATER DEPT.
TORRANCE-CITY, WATER DEPT. delivers tap water graded D (64/100) by TapWaterSafety.org. The utility serves approximately 106,183 residents in TORRANCE, California using surface water (purchased). The most significant water quality concerns are: Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Arsenic detected. For questions, the utility can be reached at 310-618-3054.
Is TORRANCE tap water safe to drink?
TORRANCE-CITY, WATER DEPT. delivers tap water that earns a grade of D (64/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including haloacetic acids (haa5) significantly above health guideline.
The utility serves 106,183 residents in TORRANCE, drawing from surface water (purchased).
Public testing data identifies 15 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Haloacetic acids (HAA9), Arsenic, Bromodichloromethane, Dibromoacetic acid, Dibromochloromethane, Bromoform, Trichloroacetic acid, Dichloroacetic acid, Chloroform, Uranium*, Radium, combined (-226 and -228), Nitrate*, Nitrate and nitrite*. 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.
Quick actions for TORRANCE residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for TORRANCE-CITY, WATER DEPT..
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.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 31.8 ppb, 212x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 12.6 ppb, 209x above the EWG health guideline of 0.06 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.6 ppb.
Contact TORRANCE-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 TORRANCE
Filters matched to the specific contaminants in this water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
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 64/100 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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA5) Disinfection byproduct |
36.2 ppb | 0.1 | 60.0 | 60 | — | — | — | 362× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
31.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 212× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
12.6 ppb | 0.06 | — | — | — | — | — | 209× over |
| Arsenic Heavy metal |
0.6 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 150× over |
| Bromodichloromethane Disinfection byproduct |
6.21 ppb | 0.06 | — | — | — | — | — | 103× over |
| Dibromoacetic acid Disinfection byproduct |
3.04 ppb | 0.03 | — | — | — | — | — | 101× over |
| Dibromochloromethane Disinfection byproduct |
9.74 ppb | 0.1 | — | — | — | — | — | 97× over |
| Bromoform Disinfection byproduct |
10.8 ppb | 0.5 | — | — | — | — | — | 22× over |
| Trichloroacetic acid Disinfection byproduct |
1.9 ppb | 0.1 | — | — | — | — | — | 19× over |
| Dichloroacetic acid Disinfection byproduct |
3.32 ppb | 0.2 | — | — | — | — | — | 17× over |
| Chloroform Disinfection byproduct |
5.0 ppb | 0.4 | — | — | — | — | — | 13× over |
| Uranium* Radiological |
1.33 pCi/L | 0.43 | 20.0 | 30 | 30 | 0.43 | — | 3.1× over |
| Radium, combined (-226 and -228) Radiological |
0.12 pCi/L | 0.05 | 5.0 | — | — | — | — | 2.3× over |
| Nitrate* Inorganic |
0.281 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.0× over |
| Nitrate and nitrite* Inorganic |
0.287 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.0× over |
| Chromium (hexavalent) Heavy metal |
0.0181 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
180.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
106.4 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| MTBE Volatile organic compound |
1.96 ppb | 13.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
8.06 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Aluminum Heavy metal |
42.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Vanadium Other |
1.15 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.91 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0284 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.777 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.366 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.273 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
13.1 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.
TORRANCE-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 TORRANCE water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.