Is Wasco, 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 City of Wasco.
City of Wasco supplies Wasco (22,757 people).
Water system
City of Wasco
22,757 people · Groundwater · EPA ID CA1510021
| 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: 0 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.
Wasco 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 Wasco city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Delano 13 mi City of Delano | None above limits | 0 ppb |
| Bakersfield 25 mi California Water Service – Bakersfield | Above limit | 2.8 ppb |
| Porterville 37 mi City of Porterville | Above limit | 0 ppb |
| Tulare 42 mi City of Tulare | None above limits | 0 ppb |
| Visalia 51 mi California Water Service – Visalia | Above limit | 0 ppb |
| Hanford 53 mi City of Hanford | None above limits | 0 ppb |
Wasco ZIP codes (1)
- 93280
Questions
Is Wasco tap water safe to drink?
City of Wasco 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 Wasco, CA?
City of Wasco, which serves 22,757 people.
Does Wasco tap water have PFAS?
None detected above EPA's reporting limits. City of Wasco 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 Wasco homes have lead pipes?
Census estimates put 48% of Wasco 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. City of Wasco'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.