B69/100
Sea Ranch Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,160 residents · California
What's In Sea Ranch's Tap Water?
32
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.70 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
4
Violations (last 5yr)
3
Unresolved
1
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 2Unresolved
Treatment technique violation
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2023 – September 30, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
SEA RANCH WATER COMPANY,THE (PUC)
Population Served
1,160
Water Source
Surface Water
System ID
CA4910007
Frequently Asked Questions About Sea Ranch Water
Is Sea Ranch tap water safe to drink?
Sea Ranch, California tap water receives a grade of B (69/100), which is considered good. Out of 32 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Sea Ranch's water?
Of the 32 contaminants tested in Sea Ranch's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Sea Ranch have any water quality violations?
Yes, Sea Ranch has 7 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, TT, MR. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Sea Ranch?
Based on EPA data, using a water filter in Sea Ranch is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Sea Ranch's tap water come from?
Sea Ranch's drinking water is sourced from surface water and supplied by SEA RANCH WATER COMPANY,THE (PUC). The system serves approximately 1,160 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Sea Ranch's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Sea Ranch's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Sea Ranch's water compare to other cities in California?
Sea Ranch's water quality score of 69/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Sea Ranch's water quality?
If you have concerns about Sea Ranch's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (SEA RANCH WATER COMPANY,THE (PUC)) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.