Guaraguao, PR
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
About Guaraguao
Guaraguao serves about 240 people through 80 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Juana Diaz Municipio County, PR. EPA system ID: PR0439034; phone on file: 787-620-2277. They can tell you what your service line is made of and whether they pay to replace it.
Neighbouring systems
7 other systems share Juana Diaz Municipio County. 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 | - |
| Jacaguas | 4,261 | 6 ppb |
| Guardia Nacional De Pr, Fort Allen | 3,000 | 7 ppb |
| Amelia | 2,390 | 6 ppb |
| Agustinillo | 1,316 | - |
| Portillo - Miramar | 210 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; Ponce, 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 Guaraguao 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. Size matters more than most people expect: small vs large water systems.