Golden State Wc - West Orange County, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.2 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Golden State Wc - West Orange County
Golden State Wc - West Orange County serves about 114,693 people through 28,347 service connections, which makes it a very large system under EPA's size classes. It is privately owned and draws surface water, in Orange County, California. EPA system ID: CA3010022; phone on file: 310-890-2804. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 2.2 ppb from 0 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Golden State Wc - West Orange County is 2.2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.2 ppb |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 0 (not detected) |
Against other California systems
Of the 2,884 California systems with a lead result, the median latest reading is 0 ppb; 30 are over 15 ppb right now and 215 have gone over at some point. Golden State Wc - West Orange County's 2.2 ppb sits at the 80th percentile in California and the 75th nationally (higher means more lead).
Neighbouring systems
39 other systems share Orange County; 9 of them have a higher latest lead result than Golden State Wc - West Orange County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Irvine Ranch Water District | 450,323 | 0 (not detected) |
| City Of Anaheim | 350,254 | 0 (not detected) |
| City Of Santa Ana | 316,184 | 0 (not detected) |
| City Of Huntington Beach | 201,000 | 0 (not detected) |
| City Of Garden Grove | 174,226 | 0 (not detected) |
| Moulton Niguel Water District | 168,315 | 0 (not detected) |
| Santa Margarita Water District | 165,275 | 0 (not detected) |
| City Of Fullerton | 140,054 | 1.5 ppb |
| City Of Orange | 120,770 | 2.33 ppb |
| Mesa Water District | 110,000 | 0 (not detected) |
Next steps for Anaheim, CA
Test your own tap with a certified lab first-draw sample; Anaheim, CA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Golden State Wc - West Orange County whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Size matters more than most people expect: small vs large water systems.