Is Redondo Beach, CA tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Golden State Water Company – Southwest.
4 public water systems serve parts of Redondo Beach. The largest, Golden State Water Company – Southwest, serves 277,740 people. Your water bill names your system.
Largest system
Golden State Water Company – Southwest
277,740 people · Purchased surface water · EPA ID CA1910155
Buys treated water from Liberty Utilities – Compton, City of Inglewood Water Dept., Hawthorne-City Water Dept., Metropolitan Water District of SO. Cal., City of Los Angeles Dept. of Water & Power, California Water Service – Dominguez.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 1.7 ppb at the 90th percentile (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across California, 129 of 691 water systems EPA tested had PFAS above a 2024 federal limit, and 26 systems were above the lead action level in results from the last five years. California results.
Redondo Beach homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Redondo Beach city (tables B25034, B25003). Estimates for small places have a margin of error.
Which system serves your ZIP code
Based on the ZIP codes each system reported serving. Boundaries don't follow ZIP lines exactly, so your water bill is the final word.
| System | ZIP codes in Redondo Beach |
|---|---|
| Golden State Water Company – Southwest 277,740 people | 90278 |
| California Water Service – Dominguez 149,490 people | 90277 |
Other water systems serving Redondo Beach
- California Water Service – Dominguez149,490 people · Purchased surface water · California · reported ZIPs herePFHxS detectedAlso: Lithium above screening level
- California Water Service – Hermosa/Redondo100,072 people · Purchased surface water · California · reported ZIPs hereLithium above screening level
- California Water Service – Palos Verdes70,830 people · Purchased surface water · California · reported ZIPs hereLithium above screening level
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Torrance 2 mi California Water Service – Dominguez | None above limits | 1.8 ppb |
| Lawndale 3 mi Golden State Water Company – Southwest | None above limits | 1.7 ppb |
| Manhattan Beach 4 mi California Water Service – Hermosa/Redondo | None above limits | 1.4 ppb |
| Hawthorne 4 mi Golden State Water Company – Southwest | None above limits | 1.7 ppb |
| Gardena 5 mi Golden State Water Company – Southwest | None above limits | 1.7 ppb |
| Inglewood 7 mi Golden State Water Company – Southwest | None above limits | 1.7 ppb |
Questions
Is Redondo Beach tap water safe to drink?
Golden State Water Company – Southwest has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Redondo Beach, CA?
4 public water systems serve parts of Redondo Beach. The largest is Golden State Water Company – Southwest (277,740 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.
Does Redondo Beach tap water have PFAS?
None detected above EPA's reporting limits. Golden State Water Company – Southwest had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Redondo Beach homes have lead pipes?
Census estimates put 67% of Redondo Beach homes as built before 1980 (California: 56%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Golden State Water Company – Southwest's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.