| Sampling Schedule | Carson (2023) | Underwood (2023) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Substance (Unit of Measure) | Ideal Goal (MCLG) | Action Level | 90th % | Sites Above AL / Total Sites | Violation | 90th % | Sites Above AL / Total Sites | Violation | Typical Source |
| Lead - at consumer taps (ppm) | 0 | 0.015 | 0.0015 | 0/10 | No | 0.0085 | 0/10 | No | Household plumbing |
| Copper - at consumer taps (ppm) | 1.3 | 1.3 | 0.027 | 0/10 | No | 0.049 | 0/10 | No | Household plumbing |
| EPA and state regulations require Skamania PUD and the systems it supplies to monitor for the presence of lead and copper at household taps in their service area every 3 years. The table above reports the results for the 2023 testing. The next round of required sampling will be conducted in 2026. | |||||||||
| The results for water tested before it enters household plumbing were even lower. This indicates that there is virtually no lead or copper in the water you are provided, but your household plumbing may contribute to the presence of lead and copper at your tap. | |||||||||
