Is San Lorenzo, PR tap water safe?
The short answer
2 of the 2 utilities serving San Lorenzo have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s records: San Lorenzo Urbano and Jagual.
San Lorenzo Urbano, which serves the most people here, has 1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 81 ppb, above the legal limit.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down.
- Open report
San Lorenzo Urbano
Puerto Rico · serves 26,470 people · lists San Lorenzo among the places it serves
1 result above the legal limit and 1 result above the health goal. The worst: Total trihalomethanes (TTHM) at 81 ppb, above the legal limit.
4 health-based violations since 2016
- Open report
Jagual
Puerto Rico · serves 4,021 people · lists San Lorenzo among the places it serves
1 result above the health goal. The worst: Lead at 6.0 ppb, above the health goal.
2 health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in San Lorenzo Urbano’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM), Lead
Water testing near San Lorenzo
The 3 labs Puerto Rico certifies closest to San Lorenzo, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Acualab de Puerto Rico
Humacao, PR · about 10 miles
Certified for bacteria
Environmental Quality Laboratories (E.Q. Lab.)
Santurce, PR · about 20 miles
Certified for bacteria, radioactivity
(787) 288-6420Website: Environmental Quality Laboratories (E.Q. Lab.)
Instituto de Laboratorios
Río Piedras, PR · about 20 miles
Certified for bacteria
ZIP codes in San Lorenzo
Which ZIP codes are in San Lorenzo: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: Departamento de Salud, laboratorios y parámetros certificados (agua potable); distances from the Census 2020 ZIP code tabulation area gazetteer.
Near San Lorenzo
Towns nearby with a page of their own.
What to do next
- Read San Lorenzo Urbano’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water