Jacaguas, PR
Lead detected, under the action levels
Latest 90th-percentile lead: 6 ppb (monitoring period 2026-2026). 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.
Who runs the water here
Jacaguas serves about 4,261 people through 1,596 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Juana Diaz Municipio County, PR. EPA system ID: PR0004534; phone on file: 787-620-2277. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Jacaguas is 6 ppb across 12 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 6 ppb |
| 2025 | 5 ppb |
| 2025 | 6 ppb |
| 2024 | 6 ppb |
| 2024 | 6 ppb |
| 2023 | 6 ppb |
| 2023 | 6 ppb |
| 2022 | 6 ppb |
| 2021 | 6 ppb |
| 2020 | 3 ppb |
| 2017 | 6 ppb |
| 2016 | 6 ppb |
Against other PR systems
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. Jacaguas's 6 ppb sits at the 65th percentile in PR and the 93rd nationally (higher means more lead).
Neighbouring systems
7 other systems share Juana Diaz Municipio County; 1 of them has a higher latest lead result than Jacaguas. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Experimental | 6,445 | 6 ppb |
| Aruz | 5,105 | - |
| Guardia Nacional De Pr, Fort Allen | 3,000 | 7 ppb |
| Amelia | 2,390 | 6 ppb |
| Agustinillo | 1,316 | - |
| Guaraguao | 240 | - |
| Portillo - Miramar | 210 | - |
Next steps for Juana Diaz, PR
Test your own tap with a certified lab first-draw sample; Juana Diaz, 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 Jacaguas whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1540 ppb (copper action level 1,300 ppb).
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.