FLAG CITY WATER SYSTEM
Stockton, CA · 135 served
FLAG CITY WATER SYSTEM serves 135 people in Stockton, CA. It has 0 health-based violations in the last 5 years. TapGraded has not yet graded this system.
Violation history (last 5 years)
No violations on record.
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Lead (Lead and Copper Rule)
EPA's current lead action level is 15 ppb (dropping to 10 ppb in 2027 under the Lead and Copper Rule Improvements).
Latest EPA Lead and Copper Rule 90th-percentile reading (monitoring period ending December 31, 2026).
PFAS (UCMR5 occurrence data)
This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).
System details
- System type
- Non-transient non-community water system
- Water source
- Ground water
- Ownership
- Local government
- Service connections
- 41
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Is Stockton, CA tap water safe to drink?
FLAG CITY WATER SYSTEM has 0 health-based violations in the last 5 years. TapGraded has not yet graded this system. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does FLAG CITY WATER SYSTEM have lead in its water?
The most recent 90th-percentile lead sample is 3 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in FLAG CITY WATER SYSTEM's water?
This system was not required to sample under UCMR5 (systems serving fewer than 3,300 people are mostly exempt).
Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.