Arsenic in New Hampshire Drinking Water
New Hampshire has 4,131 public water systems. 2871 have recorded arsenic violations.
Total Systems
4,131
With Violations
2,871
EPA MCL
0.01
Population Served
1.2M
Arsenic in New Hampshire: Key Facts
Total Water Systems
4,131
Systems with Violations
2,871
Lead Violations
482
Copper Violations
224
EPA Standard
0.01 mg/L
MCLG (goal): 0 mg/L
Water Systems with Violations in New Hampshire
| System | Population | Violations |
|---|---|---|
| STEELE POND DEV | 24 | 1622 |
| LOCKES LOCATION | 45 | 1357 |
| WEST EPPING WATER CO INC | 18 | 1339 |
| SEABROOK WATER DEPT | 14K | 1029 |
| ERROL WATER WORKS/WEST | 183 | 973 |
| MORNINGSIDE DRIVE | 80 | 934 |
| VIEW POINT COOP | 248 | 928 |
| HEMLOCK HILLS | 12 | 877 |
Health Effects of Arsenic Exposure
Cancer risk
Skin, bladder, and lung cancers with long-term exposure
Cardiovascular effects
Increased risk of heart disease and stroke
Diabetes risk
Associated with increased risk of type 2 diabetes
Increased risk of cancer (skin, bladder, lung). Thickening and discoloration of skin; numbness; circulatory problems.
Frequently Asked Questions
Is there arsenic in New Hampshire water?
New Hampshire has 4,131 public water systems. 2871 have recorded arsenic violations based on EPA SDWIS data. If you are on a private well, your water is not covered by these regulations and should be tested independently.
How can I check my New Hampshire water for arsenic?
Search for your water system using the WaterCheck system lookup, or contact your utility and request a copy of your Consumer Confidence Report (CCR). The CCR is published annually and lists all detected contaminants, their levels, and the EPA MCLs. For private wells, contact a state-certified lab for independent testing.
What is the EPA limit for arsenic?
The EPA Maximum Contaminant Level (MCL) for arsenic is 0.01 mg/L. Systems that exceed MCLs are required to notify customers and take corrective action.
Arsenic at a Glance
Source
Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
How to Filter Arsenic
- +Reverse osmosis effectively removes arsenic
- +Distillation also removes arsenic
- +Standard carbon filters do NOT remove arsenic reliably
- +Test well water annually if on a private well