Chlorine (MRDL) violations in New Hampshire
13 active public water systems in New Hampshire had a Chlorine (MRDL) violation in the past three years, 6 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wilton Water Works Wilton · Hillsborough County |
1,790 | 2 | 2 | |
|
Canaan Water Dept Canaan · Grafton County |
684 | 5 | 3 | |
|
Andover Village Dist Andover · Merrimack County |
650 | 6 | 4 | |
|
Rindge Memorial Sch Rindge · Cheshire County |
450 | 4 | 3 | |
|
W Stewartstown Water Pct Stewartstown · Coos County |
428 | 2 | 2 | |
|
Middleton Elementary School Middleton · Strafford County |
174 | 2 | 0 | |
|
N Walpole Village District/low Walpole · Cheshire County |
625 | 5 | 1 | |
|
Allenstown Community School Allenstown · Merrimack County |
608 | 3 | 0 | |
|
Greenville Est Village Dist Greenville · Hillsborough County |
472 | 3 | 0 | |
|
Tranquility Estates Raymond · Rockingham County |
315 | 2 | 0 | |
|
Wentworth Cove Estates Laconia · Belknap County |
140 | 2 | 0 | |
|
N Walpole Village Dist/high Walpole · Cheshire County |
125 | 5 | 1 | |
|
Steele Hill Resort Sanbornton · Belknap County |
60 | 4 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) 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 New Hampshire 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.