A100/100
GOLDEN STATE WATER COMPANY - NIPOMO — Water Quality Report 2026
Serving 4,506 people · California
Water Source
Groundwater
County
—
System ID
CA4010018
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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
Frequently Asked Questions About GOLDEN STATE WATER COMPANY - NIPOMO
Is GOLDEN STATE WATER COMPANY - NIPOMO water safe to drink?
GOLDEN STATE WATER COMPANY - NIPOMO water receives a grade of A (100/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GOLDEN STATE WATER COMPANY - NIPOMO detected?
31 contaminants were tested in GOLDEN STATE WATER COMPANY - NIPOMO's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GOLDEN STATE WATER COMPANY - NIPOMO have any EPA violations?
No, GOLDEN STATE WATER COMPANY - NIPOMO has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does GOLDEN STATE WATER COMPANY - NIPOMO serve?
GOLDEN STATE WATER COMPANY - NIPOMO serves approximately 4,506 people, California.
What type of water does GOLDEN STATE WATER COMPANY - NIPOMO provide?
GOLDEN STATE WATER COMPANY - NIPOMO sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA4010018.
How does GOLDEN STATE WATER COMPANY - NIPOMO compare to other utilities in California?
GOLDEN STATE WATER COMPANY - NIPOMO scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.