City and town drinking water records

Water systems serving Columbia, CA

5 community water systems have a mapped service area in Columbia, CA. Tud - Columbia Water System covers 52% of the area inside Columbia's Census boundary and reports serving 5,463 people in all.

None of them had a health-based violation in the last 10 years.

3 rely mainly on groundwater and 2 on surface water, counting water bought from other systems.

Their lead service line inventories list no lead lines, no galvanized lines that must be replaced and no lines of unknown material.

Community water systems

5

Systems with a health-based violation, last 10 years

0

Systems with one unresolved

0

Lead service lines in inventories

0

Water systems serving Columbia

5 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	Unresolved	Lead lines
Tud - Columbia Water System	Covers 52% of Columbia	5,463	Surface water	0	0	0
Rambling Hills Estates	Mapped area inside Columbia	78	Groundwater	0	0	0
49ER Trailer Ranch	Mapped area inside Columbia	115	Groundwater	0	0	0
Columbia Mobile Home Park	Mapped area inside Columbia	89	Groundwater	0	0	0
Gold Rush Mobile Home Park	Mapped area inside Columbia	67	Groundwater under direct influence	0	0	0

Other cities and towns in Tuolumne County

15 places

• Cold Springs
• East Sonora
• Groveland
• Jamestown
• Long Barn
• Mi-Wuk Village
• Mono Vista
• Phoenix Lake
• Pine Mountain Lake
• Sierra Village
• Sonora
• Soulsbyville
• Strawberry
• Tuolumne City
• Twain Harte

Back to Tuolumne 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