Across the water systems that serve Orosi, California, Lead has appeared in EPA compliance samples — standard municipal treatment targets this contaminant, though detections in the compliance record indicate it has reached household taps at measurable levels.

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-06-04

Lead in Orosi Tap Water

Orosi, California has 4 EPA violations related to lead in drinking water.

This analysis covers 11,370 residents across 1 ZIP code in Orosi.

Orosi's overall water quality grade is B (75/100).

Is Lead in Orosi Water Safe?

If you live in an affected ZIP code, consider installing a reverse osmosis or nsf 53 carbon block filter certified under NSF 53 / NSF 58 and testing your water independently.

EPA Violations for Lead in Orosi

Health Effects of Lead

• Brain development delays and reduced IQ in children
• Behavioral problems and learning disabilities
• High blood pressure and kidney damage in adults
• Increased risk of premature birth in pregnant women

Health risk severity: High. Governed by the Lead and Copper Rule Revisions (LCRR/LCRI).

How Lead Gets Into Drinking Water

• Corrosion of lead service lines (pipes connecting water main to home)
• Lead solder in copper plumbing joints (pre-1986 homes)
• Brass fixtures and faucets manufactured before 2014
• Stagnant water that sits in lead-containing pipes overnight

What to Do About Lead in Orosi Water

1. Install an NSF 53 or NSF 58 certified filter at kitchen sink
2. Run cold water for 30 seconds before using for drinking or cooking
3. Use cold water only for cooking and preparing formula
4. Consider whole-home reverse osmosis if lead service line is present

Look for filters certified under NSF 53 / NSF 58 for lead removal.

Related

• Lead — National Overview
• Lead in California
• California Water Quality
• Orosi Water Quality
• Check Your ZIP Code