Routine monitoring lead and copper monitoring consists of sampling the tap water from at least 30 homes throughout our system every three years. Monitoring will take place again in 2025, beginning in June and continuing through September.
For this testing, we deliver sample bottles to a location of your choice (at front door, at back door, between the storm door and the front door, at the garage door, etc). Water must sit static for at least 6 hours before the lead and copper sample is taken. We often encourage customers to perform the test first thing in the morning or right away when they return home from work.
Once the sample has been taken, we return to collect the bottles from the drop off location specified by the customer. Sample bottles are taken to the lab for processing. Lab results usually take four to six weeks to process. All customers receive letters detailing and explaining their lead and copper test results.
Click here for the Lead and Copper Sample Collection Procedures document.
NWWA Lead and Copper Results – 2022
| Lead Results (ppb) | Copper Results (ppm) | |
|---|---|---|
| Action Level (AL)* | 15 | 1.3 |
| Durham Village | 5 | 1.02 |
| Hermitage Condominiums | 4 | 0.938 |
| Ingham Mews | 6 | 0.143 |
| Olde Colonial Greene** | 1 | 0.958 |
| Pine Run Community | 4 | 0.408 |
| Logan Square Shopping Ctr. | 8 | 0.195 |
| Yorkshire Meadows | 3 | 0.200 |
| NWWA Main System | 3 | 0.242 |
| Warrington Township | 1 | 0.143 |
This table represents the 90th percentile values determined from the lead and copper samples collected for each system. The 90th percentile is obtained after disregarding 10 percent of the samples taken that had the highest values.
• Action Level (AL)* – The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.
** These Olde Colonial results are from June 2022. All systems are due for lead and copper monitoring in 2025.