City and town drinking water records

Water systems serving Stockton, CA

3 community water systems have a mapped service area in Stockton, CA. City of Stockton covers 53% of the area inside Stockton's Census boundary and reports serving 191,302 people in all.

1 of them had at least one health-based violation in the last 10 years. None of those systems has one still unresolved.

1 relies mainly on groundwater and 2 on surface water, counting water bought from other systems.

2 systems filed a lead service line inventory listing 0 lead lines, 0 galvanized lines that must be replaced and 39,837 lines of unknown material.

1 more system is placed in Stockton by EPA's town record because it has no service area map that lines up with its own records, so it is listed apart and not counted here.

Community water systems: 3
Systems with a health-based violation, last 10 years: 1
Systems with one unresolved: 0
Lead service lines in inventories: 0

Water systems serving Stockton

3 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System	Area	People served	Main source	Health-based violations, 10 years	Lead lines
City of Stockton	Covers 53% of Stockton	191,302	Surface water	2	No inventory
California Water Service - Stockton	Covers 40% of Stockton	176,266	Purchased surface water	0	0
San Juan Vista	Mapped area inside Stockton	201	Groundwater	0	0

Systems placed by EPA's town record in Stockton

1 system

The service area map EPA has for this system does not line up with its own records. It is placed by EPA's town record (EPA lists it serving this town), and without a map it is not counted in the figures above.

System	Area	People served	Main source	Health-based violations, 10 years	Unresolved	Lead lines
CDCR California Health Care Facility	Town on record	5,551	Purchased surface water	3	0	0

Other cities and towns in San Joaquin County

24 places

Back to San Joaquin County, CA

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations