CTWC - NORTHERN REG-WESTERN SYSTEM vs REGIONAL WATER AUTHORITY
Water quality comparison — risk levels, violations, PFAS records, and contaminants
Quick Answer
Both utilities share the same risk level (safe). CTWC - NORTHERN REG-WESTERN SYSTEM has 0 open health-based violations and 245 PFAS records. REGIONAL WATER AUTHORITY has 0 open health-based violations and 297 PFAS records.
Connecticut · CT0473011
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
245
PFAS records
Connecticut · CT0930011
No Concerns Detected
Water meets all safety standards with no detected exceedances.
0
Open violations
297
PFAS records
Head-to-Head Comparison
| Metric | CTWC - NORTHERN REG-WESTERN SYSTEM | REGIONAL WATER AUTHORITY |
|---|---|---|
| State | Connecticut | Connecticut |
| Risk Level | No Concerns Detected | No Concerns Detected |
| Population Served | 101,313 | 418,900 |
| Open Health Violations | 0 | 0 |
| Total Violations | 55 | 58 |
| PFAS Records | 245 | 297 |
| Ownership | Private | Local |
| Service Type | Surface water | Surface water |
| City Served | East Granby,East Windsor,Ellington,Enfield,Manchester,Mansfield,South Windsor,Stafford,Suffield,Tolland,Vernon,Windsor Locks | — |
Contaminants in Violation Records
CTWC - NORTHERN REG-WESTERN SYSTEM
- Bromate
REGIONAL WATER AUTHORITY
- Nitrate
- Bromate
Key Differences
CTWC - NORTHERN REG-WESTERN SYSTEM has 245 PFAS records vs. 297 for REGIONAL WATER AUTHORITY.
What Should I Do?
If either utility shows open violations or elevated PFAS records, consider:
- Installing a reverse osmosis filter — removes PFAS, lead, arsenic, nitrates, and most heavy metals.
- Requesting your utility’s annual Consumer Confidence Report (CCR) for the most current test results.
- Ordering a certified lab water test if you want contaminant-specific data for your address.
Frequently Asked Questions
Which is safer — CTWC - NORTHERN REG-WESTERN SYSTEM or REGIONAL WATER AUTHORITY?
Both utilities share the same risk level (safe). Both utilities have similar violation profiles — review the full data above to decide based on specific contaminants that concern you.
What does "open health-based violation" mean?
An open health-based violation means a water system has exceeded an EPA Maximum Contaminant Level (MCL) or failed to meet a treatment technique — and the violation has not yet been resolved. These are the most serious type of water quality violations.
How current is this data?
Violation data comes from EPA's Safe Drinking Water Information System (SDWIS), which is updated as utilities report. PFAS data comes from EPA's UCMR 5 monitoring (2023–2025). Risk levels are recalculated daily.
What does PWSID mean?
PWSID stands for Public Water System ID — a unique federal identifier assigned to each community water system. You can use it to look up a system in EPA's ECHO database.