Trujillo Trail Dwid, AZ
Lead detected, under the action levels
Latest 90th-percentile lead: 1.3 ppb (monitoring period 2023-2025). 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 Trujillo Trail Dwid
Trujillo Trail Dwid serves about 78 people through 39 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Santa Cruz County, Arizona. EPA system ID: AZ0412040; phone on file: 916-307-9339. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Trujillo Trail Dwid's lead record
That is down 3.1 ppb from 4.4 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Trujillo Trail Dwid is 8 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.3 ppb |
| 2022 | 4.4 ppb |
| 2020 | 4.1 ppb |
| 2019 | 4.1 ppb |
| 2017 | 8 ppb |
| 2016 | 8 ppb |
How Trujillo Trail Dwid compares
Of the 730 Arizona systems with a lead result, the median latest reading is 0 ppb; 9 are over 15 ppb right now and 58 have gone over at some point. Trujillo Trail Dwid's 1.3 ppb sits at the 77th percentile in Arizona and the 60th nationally (higher means more lead).
Neighbouring systems
15 other systems share Santa Cruz County; 2 of them have a higher latest lead result than Trujillo Trail Dwid. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Nogales City Of | 22,000 | 0 (not detected) |
| Liberty Water Rio Rico | 17,960 | 0 (not detected) |
| Valle Verde Water Company - East | 2,397 | 0 (not detected) |
| Epcor - Tubac | 2,076 | 0 (not detected) |
| Baca Float Water Company | 1,162 | 0 (not detected) |
| Patagonia Water Department | 819 | 0 (not detected) |
| Town & Country - Preston | 430 | 0 (not detected) |
| Kino Ranch 2 | 173 | 0 (not detected) |
| Sonoita Valley (South) Water Company | 172 | 8 ppb |
| The Grand Acres | 153 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Tubac, AZ 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 Trujillo Trail Dwid 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.