Question 1

Is Rio Loco water safe to drink?

Accepted Answer

Rio Loco (PWS ID: PR0004094) has 70 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 1,501 people using Groundwater sources.

Question 2

How many people does Rio Loco serve?

Accepted Answer

EPA SDWIS reports that Rio Loco serves 1,501 people (this public water system's service population, not the municipal population of Guanica or any other city). It is a Local-owned system using Groundwater water sources with 714 service connections. The operator address is listed in Guanica, Puerto Rico.

Question 3

What type of violations does Rio Loco have?

Accepted Answer

Rio Loco has 70 total violations: 6 health-based violations (MCL exceedances or treatment failures), 59 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Question 4

Has PFAS been detected in Rio Loco water?

Accepted Answer

No PFAS testing data is available for Rio Loco under the EPA's UCMR5 monitoring program.

Question 5

What water source does Rio Loco use?

Accepted Answer

Rio Loco uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Question 6

Where does this data come from?

Accepted Answer

All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Question 7

Where does Rio Loco sit among U.S. public water systems?

Accepted Answer

According to EPA SDWIS population_served among sitemap-advertised systems (serving 500+), Rio Loco ranks #15,849 of 29,740 by people served, and #139 of 235 in Puerto Rico. Ordinals use population_served DESC among systems serving 500+ (the sitemap cohort). See /methodology#corpus-placement.

Question 8

How does Rio Loco's violation count compare nationally?

Accepted Answer

Rio Loco has 70 recorded EPA SDWIS violations, fewer than 35% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 65% of that cohort has fewer violations than Rio Loco. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

Contaminant	Category	Count	Latest
Coliform (TCR)	MCL	6	2014
Lead and Copper Rule	MR	4	2013
o-Dichlorobenzene	MR	2	2005
p-Dichlorobenzene	MR	2	2005
trans-1,2-Dichloroethylene	MR	2	2005
1,2-Dichloroethane	MR	2	2005
Carbon tetrachloride	MR	2	2005
1,2-Dichloropropane	MR	2	2005
Trichloroethylene	MR	2	2005
Tetrachloroethylene	MR	2	2005
CHLOROBENZENE	MR	2	2005
Benzene	MR	2	2005
Toluene	MR	2	2005
Ethylbenzene	MR	2	2005
Styrene	MR	2	2005
1,1-Dichloroethylene	MR	2	2005
cis-1,2-Dichloroethylene	MR	2	2005
1,1,2-Trichloroethane	MR	2	2005
1,1,1-Trichloroethane	MR	2	2005
DICHLOROMETHANE	MR	2	2005
1,2,4-Trichlorobenzene	MR	2	2005
Xylenes, Total	MR	2	2005
Vinyl chloride	MR	2	2005
Coliform (TCR)	MR	1	1998
Dinoseb	MR	1	1998
2,4,5-TP	MR	1	1998
Pentachlorophenol	MR	1	1998
1,2-DIBROMO-3-CHLOROPROPANE	MR	1	2005
OXAMYL	MR	1	2009
Carbofuran	MR	1	2009

Rio Loco

Rio Loco standing, mid SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Health-based violations on Rio Loco

Nationwide peers

Cross-state systems near this violation count

Cross-state systems near this population served