Non-Transient Non-Community Water System · PWS RI2980458
Tiverton Four Corners
Operator location Adamsville, Rhode Island - smaller served population (≤ 999) at 297 people served; 216 SDWIS violations on record from groundwater sources.
- 297
- People served (this PWS)
- 216
- EPA violations (this PWS)
- 12
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Tiverton Four Corners standing, high SDWIS violation third
297 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 6% is middle-third health share (≤ 23%).
The verdict
Tiverton Four Corners sits in the upper third of the sitemap cohort by violation count (216), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (297; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 6% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 216
- Total EPA violations on record
- 6%
- Health-based (MCL / treatment failure)
- 297
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 13
- County
- Newport
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 204
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 13 | 2015 |
| Coliform (TCR) | MCL | 12 | 2015 |
| Lead and Copper Rule | MR | 8 | 2018 |
| Chromium | MR | 6 | 2023 |
| trans-1,2-Dichloroethylene | MR | 3 | 2014 |
| 1,1,1-Trichloroethane | MR | 3 | 2014 |
| Trichloroethylene | MR | 3 | 2014 |
| 1,1,2-Trichloroethane | MR | 3 | 2014 |
| CHLOROBENZENE | MR | 3 | 2014 |
| Toluene | MR | 3 | 2014 |
| Ethylbenzene | MR | 3 | 2014 |
| BHC-GAMMA | MR | 3 | 2014 |
| Methoxychlor | MR | 3 | 2014 |
| Toxaphene | MR | 3 | 2014 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2014 |
| Simazine | MR | 3 | 2014 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2014 |
| Picloram | MR | 3 | 2014 |
| Dinoseb | MR | 3 | 2014 |
| Aldicarb sulfone | MR | 3 | 2014 |
| Carbofuran | MR | 3 | 2014 |
| LASSO | MR | 3 | 2014 |
| 2,4-D | MR | 3 | 2014 |
| 2,4,5-TP | MR | 3 | 2014 |
| HEXACHLOROBENZENE | MR | 3 | 2014 |
| Benzo(a)pyrene | MR | 3 | 2014 |
| ETHYLENE DIBROMIDE | MR | 3 | 2014 |
| o-Dichlorobenzene | MR | 3 | 2014 |
| Cadmium | MR | 3 | 2014 |
| Antimony, Total | MR | 3 | 2014 |
Violation Count vs. the National Corpus
Tiverton Four Corners has 216 recorded EPA violations, 86% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 14% carry more. 6% of this system's own violations are health-based (12 of 216), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
216 Higher than most more violations than 86% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Tiverton Four Corners
EPA SDWIS lists 297 people served and 13 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
216 violations · 297 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Tiverton Four Corners
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Rhode Island compares on the same EPA violation measures. Rhode Island systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.