Water Quality: Mammoth Spring, AR
2 water systems • 1,829 people served
Multiple Health ViolationsWater Quality Summary
Mammoth Spring is served by 2 public water systems with a combined service population of 1,829 people, and has 341 EPA Safe Drinking Water Act violations on record. Critically, 95 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Mammoth Spring's violation count is 697% above the national average for Arkansas. Contaminants associated with violations include Bromate, Chlorine, Chlorine Dioxide, E. coli, Fecal Coliform.
Contaminants Found
Probable human carcinogen that increases the risk of kidney and thyroid cancers.
Common source: Ozonation of bromide-containing water; used as flour improver
EPA limit: 0.010 mg/L (10 ppb)
Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.
Common source: Water treatment disinfectant added to kill harmful microorganisms
EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)
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
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Indicates direct fecal contamination; associated with diarrhea, cramps, nausea, and potential severe illness.
Common source: Human and animal fecal waste
EPA limit: Zero tolerance (any positive triggers violations)
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Water Systems Serving Mammoth Spring
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MAMMOTH SPRING WATERWORKS | AR0000206 | Groundwater | 1,777 | 9 |
| HOSANNA HEIGHTS WATER | AR0000884 | Groundwater | 52 | 332 |
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 Arkansas
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.