Sector Los Diaz, PR
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2016-2016). 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.
Sector Los Diaz at a glance
Sector Los Diaz serves about 197 people through 74 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in San Lorenzo Municipio County, PR. EPA system ID: PR0666036; phone on file: 787-715-0848. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
The highest 90th-percentile result EPA holds for Sector Los Diaz is 1 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2016 | 1 ppb |
Where this result ranks
Of the 111 PR systems with a lead result, the median latest reading is 5 ppb; 10 are over 15 ppb right now and 16 have gone over at some point. Sector Los Diaz's 1 ppb sits at the 0th percentile in PR and the 52nd nationally (higher means more lead).
Neighbouring systems
16 other systems share San Lorenzo Municipio County; 5 of them have a higher latest lead result than Sector Los Diaz. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| San Lorenzo Urbano | 26,470 | - |
| Jagual | 4,021 | - |
| Espino | 2,643 | - |
| Acued.Comunal Sect. Manuel Diaz | 331 | - |
| Asoc. Pro Acueducto Hato Cuchilla Inc. | 256 | 3 ppb |
| Acueducto Sector Pachin Inc. | 243 | 3 ppb |
| Macanea / Espino | 224 | - |
| Asoc. Vecinos Sect. Los Oquendo | 214 | - |
| El Cerro Corp. | 192 | - |
| Quemados I Sec. Los Ortiz Inc. | 187 | 3 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; San Lorenzo, PR 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 Sector Los Diaz 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.