Progressive Flat Water Assn, WA
Lead detected, under the action levels
Latest 90th-percentile lead: 5.2 ppb (monitoring period 2021-2023). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
About Progressive Flat Water Assn
Progressive Flat Water Assn serves about 335 people through 84 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Okanogan County, Washington. EPA system ID: WA5369650. Ask the utility on your bill for your address in their service line inventory.
Progressive Flat Water Assn's lead record
That is up 4.2 ppb from 1 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Progressive Flat Water Assn is 5.2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 5.2 ppb |
| 2020 | 1 ppb |
| 2017 | 1.7 ppb |
Where this result ranks
Of the 2,218 Washington systems with a lead result, the median latest reading is 1 ppb; 18 are over 15 ppb right now and 62 have gone over at some point. Progressive Flat Water Assn's 5.2 ppb sits at the 92nd percentile in Washington and the 92nd nationally (higher means more lead).
Neighbouring systems
42 other systems share Okanogan County; 0 of them have a higher latest lead result than Progressive Flat Water Assn. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Omak City Of | 4,940 | 3 ppb |
| Brewster City Of | 3,843 | 1.7 ppb |
| Okanogan Water Department City Of | 3,817 | 1.4 ppb |
| Oroville City Of | 3,256 | 3.2 ppb |
| Tonasket Water System | 2,398 | 0 (not detected) |
| Coulee Dam Water Dept | 1,454 | 1.7 ppb |
| Winthrop Town Of | 1,350 | 1 ppb |
| Twisp Town Of | 1,173 | 1.1 ppb |
| Monse-Riggan Camp | 1,165 | 0 (not detected) |
| Pateros Water Department | 1,149 | 2.8 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Tonasket, WA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Progressive Flat Water Assn whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.