MAYAGUEZ
PWSID: PR0003283 · Mayaguez, PR · Serves 152,342 people
According to EPA Safe Drinking Water Information System (SDWIS), MAYAGUEZ (PWSID PR0003283) in Mayaguez, PR is listed as a CWS water system covering about 152,342 people. The same extract lists 46 health-based violation records spanning 2014-2023. Those 46 health-based rows for MAYAGUEZ cover contaminants such as TTHM, Interim Enhanced Surface Water Treatment Rule, Total Haloacetic Acids (HAA5); they remain historical EPA registry entries, not a current compliance or drinkability score.
MAYAGUEZ has 46 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 4 distinct EPA contaminant codes appear in this system's record, including TTHM, Interim Enhanced Surface Water Treatment Rule, Total Haloacetic Acids (HAA5). Recorded violations span 2014–2023. Day-to-day primacy enforcement for this system runs through the Puerto Rico drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Puerto Rico state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- PR0003283
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Mayaguez, PR
- Population Served
- 152,342
- Health Violations
- Yes (46)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 31 | 31 |
| Interim Enhanced Surface Water Treatment Rule | 7 | 7 |
| Total Haloacetic Acids (HAA5) | 6 | 6 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 2 | 2 |
Violation History (46)
| Contaminant | Health | Date |
|---|---|---|
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Apr 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Sep 1, 2022 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Sep 1, 2022 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Sep 1, 2022 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Oct 1, 2018 |
| Long Term 2 Enhanced Surface Water Treatment Rule | Yes | May 16, 2018 |
| Long Term 2 Enhanced Surface Water Treatment Rule | Yes | May 16, 2018 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Jun 1, 2017 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Jun 1, 2017 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Jun 1, 2017 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Jun 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| TTHM | Yes | Oct 1, 2016 |
| TTHM | Yes | Oct 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2016 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Oct 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Jul 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
| TTHM | Yes | Apr 1, 2015 |
| TTHM | Yes | Jan 1, 2015 |
| TTHM | Yes | Jan 1, 2015 |
| TTHM | Yes | Oct 1, 2014 |
| TTHM | Yes | Oct 1, 2014 |
| TTHM | Yes | Jul 1, 2014 |
| TTHM | Yes | Jul 1, 2014 |
Frequently Asked Questions
What does EPA SDWIS list for MAYAGUEZ?
How many people does MAYAGUEZ serve?
What violations does MAYAGUEZ have?
What contaminants have been found in MAYAGUEZ water?
Compare beyond Puerto Rico
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest MAYAGUEZ on cumulative violation count (46) and EPA-reported population served (152,342). Violation-count peers include GRAND PORTAGE, Zia Pueblo, Fort McDowell Community. Population peers include ATLANTIC CITY MUA, CALIFORNIA WATER SERVICE CO. - ELA, CITY OF MESQUITE.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
Explore More
About This Data
MAYAGUEZ (PR0003283) is drawn from EPA SDWIS. Nearby county systems in this extract include PONCE DE LEON; CONSUMO. Health-based rows (46 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.