Excellent Water Quality
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
0.8
|
15 ppb | 1 ppb | Passed |
Water Quality Summary
Tap water quality in Willows, California (95988) receives an overall grade of A (Excellent) with a score of 100 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 19 points above the California state average of 81. Compared to the national average (75), this area performs significantly better. The area is served by Cal-Water Service Co.-Willows, a groundwater system providing water to approximately 7,240 people. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.
A score of 100/100 means the water supply in Willows, CA meets or exceeds all EPA standards with minimal issues. Contaminant levels are well within safe limits, and the water system has maintained a strong compliance record. While no water supply is guaranteed perfect at the tap due to household plumbing, this is among the best-scoring areas in the country.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.
Common Questions
Based on EPA data, tap water in Willows, California receives a grade of A (Excellent) with a score of 100/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.
ZIP code 95988 is served by 1 water system using groundwater sources, providing water to approximately 7,240 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.
Lead levels in Willows, California are 0.8 ppb, which is at or below the health guideline of 1 ppb. This is a positive result, though periodic testing is still recommended.
No PFAS ("forever chemicals") were detected in water systems serving Willows, California during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.
Water systems serving Willows, California have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.
Water in Willows, California shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.