Tapcensus

Combined Radium (-226 and -228) violations in Connecticut

10 active public water systems in Connecticut had a Combined Radium (-226 and -228) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Combined Radium (-226 and -228) is and why it matters.

Health effects: Radium is a bone-seeking radionuclide that accumulates in skeletal tissue after ingestion. Long-term exposure increases the risk of bone cancer and leukemia. There is no safe threshold for ionizing radiation — the MCL is set at a level balancing risk reduction with treatment feasibility. Children are particularly vulnerable due to higher rates of bone growth and calcium uptake.

Systems with a Combined Radium (-226 and -228) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Mallard Cove Condominium Assn.
East Hampton · Middlesex County
177 7 0
Aquarion-New Milford Regional
Brookfield, New Milford · Fairfield County
13,331 4 0
Berlin Water Control Commission
Berlin, Middletown, Newington · Hartford County
5,128 5 2
Colchester Estates
Colchester · New London County
276 6 2
Hillside Condominiums
Columbia, Hebron, Lebanon · Tolland County
96 3 2
Crestview Condominium Association
Cheshire · New Haven County
84 6 3
Little Brook RD Property Owners Assn
New Hartford · Litchfield County
64 6 1
Sunset Apartments LLC
Bolton · Tolland County
46 6 2
Hebron Arms Apartments
Hebron · Tolland County
39 6 3
Windsorville Water Association
East Windsor · Hartford County
29 8 1
About this data

A system is counted once if any of its violations in the past three years involved Combined Radium (-226 and -228), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Combined Radium (-226 and -228) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Connecticut records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.