Mountaindale Wd, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 0.78 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.
Mountaindale Wd at a glance
Mountaindale Wd serves about 320 people through 285 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Sullivan County, New York. EPA system ID: NY5203322; phone on file: 845-434-8810. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is down 4.96 ppb from 5.74 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Mountaindale Wd is 5.74 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0.78 ppb |
| 2020 | 5.74 ppb |
| 2017 | 1.2 ppb |
Where this result ranks
Of the 2,077 New York systems with a lead result, the median latest reading is 1.5 ppb; 17 are over 15 ppb right now and 165 have gone over at some point. Mountaindale Wd's 0.78 ppb sits at the 23rd percentile in New York and the 47th nationally (higher means more lead).
Neighbouring systems
64 other systems share Sullivan County; 40 of them have a higher latest lead result than Mountaindale Wd. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Monticello Village | 8,000 | 0 (not detected) |
| Fallsburg Who-Ls-Sf | 7,850 | 2 ppb |
| Liberty Village | 3,900 | 0 (not detected) |
| Stevensville+Rfl | 3,250 | 1 ppb |
| Swan In Swan Lake | 2,900 | - |
| Emerald Green Lake Louise Marie Wc | 2,400 | 2.65 ppb |
| Livingston Manor Wd | 1,500 | 3 ppb |
| Wurtsboro Village | 1,400 | 7.01 ppb |
| Roscoe-Rockland Wd | 1,000 | 11 ppb |
| Adelaar Wd | 1,000 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; South Fallsburg, NY 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 Mountaindale Wd 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.