Lazy H Mutual Water Company, CA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.6 ppb (monitoring period 2024-2026). 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 Lazy H Mutual Water Company
Lazy H Mutual Water Company serves about 117 people through 42 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in San Diego County, California. EPA system ID: CA3700937; phone on file: 760-742-3704. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.9 ppb from 2.5 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Lazy H Mutual Water Company is 2.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.6 ppb |
| 2023 | 2.5 ppb |
| 2017 | 0.7 ppb |
How Lazy H Mutual Water Company compares
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. Lazy H Mutual Water Company's 0.6 ppb sits at the 66th percentile in California and the 45th nationally (higher means more lead).
Neighbouring systems
80 other systems share San Diego County; 26 of them have a higher latest lead result than Lazy H Mutual Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| San Diego, City Of | 1,408,937 | 0 (not detected) |
| Helix Water District | 277,918 | 0 (not detected) |
| Otay Water District | 242,155 | 0 (not detected) |
| Sweetwater Authority | 184,915 | 0 (not detected) |
| Oceanside, City Of | 174,340 | 0 (not detected) |
| Escondido, City Of | 137,044 | 1.1 ppb |
| Vista Irrigation District | 134,501 | 0 (not detected) |
| Vallecitos Wd | 114,700 | 0 (not detected) |
| Cal-Am Water Coronado | 106,000 | 2 ppb |
| Carlsbad Mwd | 96,371 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Pauma Valley, 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 Lazy H Mutual Water Company 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.