Watsonville, California Water Quality Report
Water quality data for 15 water systems serving 68,078 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 27.3 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 273% | Above guideline |
| PFBS | 0.006 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.007 | 0.010 ug/L | 0.001 ug/L(EWG) | 67% | Within limit |
| PFOA | 0.006 | 0.004 ug/L | 0.090 ug/L(EWG) | 163% | Above limit |
| PFOS | 0.005 | 0.004 ug/L | 0.300 ug/L(EWG) | 128% | Above limit |
| PFPeA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
Get a Free Water Quality Consultation
Connect with a certified water treatment professional in Watsonville, California.
Get Water Quality Alerts
Be the first to know when water quality changes in Watsonville.
Compliance & Violations
Active Violations (30)
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (450)
3A
Apr 1, 2025 — Apr 30, 2025
3A
Apr 1, 2025 — Apr 30, 2025
02
Mar 20, 2024 — Jun 19, 2024
3A
Feb 1, 2022 — Feb 28, 2022
3A
Feb 1, 2022 — Feb 28, 2022
+ 445 more resolved violations
Frequently Asked Questions
Is Watsonville tap water safe to drink?
Watsonville's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Watsonville tap water?
7 contaminants have been detected in Watsonville's water supply across 15 water systems. See the full contaminant table above for details.
How can I improve my water quality in Watsonville?
Install a water filter rated for the specific contaminants found in Watsonville's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Watsonville have any water quality violations?
Yes, Watsonville currently has 30 active violations. See the violations section above for details.