Water Quality: Stratham, NH
10 water systems • 788 people served
Multiple Health ViolationsWater Quality Summary
Stratham is served by 10 public water systems with a combined service population of 788 people, and has 119 EPA Safe Drinking Water Act violations on record. Critically, 59 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Stratham's violation count is 187% above the national average for New Hampshire. Contaminants associated with violations include Barium, Chlorine Dioxide, Copper, Disinfection Byproducts, Total Organic Carbon.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Short-term exposure causes gastrointestinal distress; long-term exposure can cause liver and kidney damage.
Common source: Corrosion of household plumbing systems and fixtures
EPA limit: Action Level: 1.3 mg/L (1,300 ppb)
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Not a direct health risk but reacts with disinfectants to form carcinogenic byproducts such as trihalomethanes.
Common source: Decaying plant material, algae, soil organic matter in source water
EPA limit: Treatment technique (must reduce TOC based on source water level)
Water Systems Serving Stratham
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| COW HILL WELLHOUSE | NH0162160 | Groundwater | 150 | 2 |
| STRATHAM GREEN CONDOS | NH2232050 | Groundwater | 150 | 2 |
| MOONGATE FARM | NH1932060 | Groundwater | 120 | 1 |
| MILL POND CROSSING | NH0282010 | Groundwater | 72 | 4 |
| MUIRFIELD CLUSTER | NH2232130 | Groundwater | 69 | 18 |
| JEWETT HILL | NH2232140 | Groundwater | 55 | 8 |
| OYSTER RIVER CONDOS | NH1332010 | Groundwater | 53 | 3 |
| ABERDEEN/WEST | NH2232150 | Groundwater | 46 | 6 |
| STRATHAM WOODS | NH2232090 | Groundwater | 38 | 23 |
| LAMINGTON HILL | NH2232170 | Groundwater | 35 | 52 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in New Hampshire
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.