Regional Water Authority
Drinking water quality, contact, and Consumer Confidence Report
Serving 14 cities in CT · PWSID CT0930011
Regional Water Authority serves 418,900 people. PFAS detected above health guidelines (Perfluorooctanesulfonic acid, Perfluorooctanoic acid) — full contaminant breakdown below.
- People served
- 418,900
- Last EPA sample
- 2025-10-02
- PFAS
- Detected (2 compounds)
- Health-based violations since 2020
- 0
Data sources: EPA SDWIS, Regional Water Authority's published Consumer Confidence Report, and compliance monitoring reported to EPA by Connecticut DPH Drinking Water Section.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Official Regional Water Authority Resources
Emergency Contact
Help Paying Your Regional Water Authority Water Bill
- Ask Regional Water Authority about payment plans and assistance.
- Call 211 to reach local help with utility bills.Verified from 211.org
- Find your local Community Action Agency.Verified from communityactionpartnership.com
- The federal water-bill program (LIHWAP) ended in March 2024.Verified from acf.govVerified from csd.ca.gov
Water outage or no water?
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Connecticut
Regional Water Authority Service Area
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This map shows the approximate service area for Regional Water Authority. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
Regional Water Authority Water Quality Grade
Not graded: Warning
Regional Water Authority reads Warning. A letter grade is given only beside a Safe verdict.
Is Regional Water Authority Water Safe to Drink?
Regional Water Authority has reported 2 contaminants above EPA health-based guidelines (MCLGs) and 2 above EPA's legal limit (MCL, enforceable from April 26, 2029) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
This utility serves 418,900 people across 14 cities in CT. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
Get your water independently tested in Connecticut →How does Connecticut water quality rank nationally? →
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Connecticut
Learn more about the contaminants detected in Regional Water Authority:
Fluoride in Regional Water Authority Water
Regional Water Authority
PWSID CT0930011
Regional Water Authority reported 0.67 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
Regional Water Authority Service Area
Ansonia, CT
Branford Center, CT
Cheshire Village, CT
Derby, CT
East Haven, CT
Milford, CT
New Haven, CT
North Haven, CT
Northford, CT
Orange, CT
Quinnipiac University, CT
West Haven, CT
Woodmont, CT
Wolcott, CT
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Regional Water Authority Contact & Information
B2B Contact Data
B2B Contact Data Available
Contacts for Regional Water Authority
| Name | Title | Phone | |
|---|---|---|---|
| J████ S████ | Water Treatment Supervisor | (555) ███-████ | j████@city████.gov |
| M████ J██████ | Utility Director | (555) ███-████ | m████@water████.org |
Water Sources & Treatment
Water Sources
Treatment Methods
Disinfectant Used
hypochlorite
Regional Water Authority Consumer Confidence Report
A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act §1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.
A current CCR for Regional Water Authority has not been published or validated on TapWaterData yet.
Residents: contact the utility directly using the phone number above, or check the EPA’s national CCR portal. Reports are typically distributed by mail or posted on the utility’s official website.
Regional Water Authority Annual Water Quality Reports
We don’t have a link we can confirm belongs to this system, and we’d rather show none than the wrong utility’s. Connecticut DPH Drinking Water Section publishes drinking-water reports for systems in this state.
Visit Connecticut DPH Drinking Water SectionWhat is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.
EPA Health-Based Violations Since 2020
Regional Water Authority has no health-based EPA violation since 2020 (EPA data as of Q2 2026).
EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Concerned about what's in your water?
You're viewing 4 contaminants above health-based guidelines here. Your own tap water can differ — upload your test (PDF or a photo) and we'll email a full plain-English reading of every number, free.
Your upload also helps us keep local water data accurate — we only ever share anonymized, area-level summaries.
Upload my testRecommended Water Filters for Regional Water Authority
Based on water quality data from cities served by Regional Water Authority, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Filter guides for the contaminants detected here:
Frequently Asked Questions about Regional Water Authority
Is Regional Water Authority water safe to drink?
Does Regional Water Authority have PFAS in its water?
How do I pay my Regional Water Authority water bill?
How many people does Regional Water Authority serve?
What cities does Regional Water Authority serve?
Does Regional Water Authority have any EPA violations?
What is Regional Water Authority's phone number?
Where can I find Regional Water Authority's Consumer Confidence Report?
Similar water utilities in Connecticut
How we built this page
Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data — typically within days of an EPA SDWIS refresh.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: Regional Water Authority's most recent published Consumer Confidence Report (CCR), where available.
- Service area & contact: EPA SDWIS. The compliance records it holds for this system are reported to EPA by Connecticut DPH Drinking Water Section, the state's drinking-water primacy agency.
Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.
Are you Regional Water Authority? Publish your 2027 CCR
TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here — it inherits this page's search authority and reaches every customer who Googles Regional Water Authority.
- EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
- Publish once a year. Agent-assisted workflow; no login setup for small systems.
- Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
Free for operators. No card required. Typical setup: 5 minutes.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach Regional Water Authority. For a problem with your water now (discolored water, no water, low pressure, a leak), contact Regional Water Authority directly.
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