Guayanilla Municipio, PR
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Guayanilla Municipio in Puerto Rico · Population: 17,418
TRI sites such as Prepa-South Coast Power Plant; Master Paints & Chemicals Corp; Southern Wood Treating Inc; SDWIS systems such as GUAYANILLA URBANO; DEPORTIVO; PIEDRAS BLANCAS anchor Guayanilla Municipio, PR's EPA extract. Derived burden score 28/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Guayanilla Municipio include QUEBRADA HONDA; PELCHAS, while Prepa-South Coast Power Plant leads reported TRI pounds among local Form R filers. No AQS county monitors report here.
Burden score 28/100 (Low Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Guayanilla Municipio -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Guayanilla Municipio, PR: EPA TRI 2023 reporting year
Same facilities, both years
+8.3%
3 facilities that filed in 2022 and 2023
Whole inventory
+8.3%
242.5 thousand lb → 262.7 thousand lb, every facility that filed
- Guayanilla Municipio, PR's total reported releases rose from 242.5 thousand lb in 2022 to 262.7 thousand lb in 2023, based on EPA TRI filings.
- Guayanilla Municipio, PR's chemicals reported rose from 10 in 2022 to 11 in 2023, based on EPA TRI filings.
- Guayanilla Municipio, PR's air releases rose from 242.5 thousand lb in 2022 to 262.7 thousand lb in 2023, based on EPA TRI filings.
Water Systems (7)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| GUAYANILLA URBANO | 7,302 | 0 |
| DEPORTIVO | 3,420 | 0 |
| PIEDRAS BLANCAS | 3,351 | 0 |
| CONSEJO | 1,092 | 0 |
| JAGUA PASTO | 844 | 0 |
| QUEBRADA HONDA | 240 | 1 |
| PELCHAS | 85 | 3 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Prepa-South Coast Power Plant | 681.4K lbs |
| 2 | Master Paints & Chemicals Corp | 0 lbs |
| 3 | Southern Wood Treating Inc | 0 lbs |
Cities in Guayanilla Municipio (1)
Frequently Asked Questions
What is the environmental risk level in Guayanilla Municipio, Puerto Rico? ▼
Are there Superfund sites in Guayanilla Municipio? ▼
How many toxic release facilities are in Guayanilla Municipio? ▼
What is the air quality in Guayanilla Municipio? ▼
Is the drinking water safe in Guayanilla Municipio? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.