Northern Lights Terrace, AK
Exceeded the action level in the past
Latest 90th-percentile lead: 1.1 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Northern Lights Terrace serves about 168 people through 66 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Matanuska-Susitna Borough County, Alaska. EPA system ID: AK2224214; phone on file: 405-239-9900. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (1.2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Northern Lights Terrace is 125 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.1 ppb |
| 2025 | 1.2 ppb |
| 2024 | 125 ppb over 15 |
| 2021 | 6.27 ppb |
| 2018 | 1.89 ppb |
How Northern Lights Terrace compares
Of the 394 Alaska systems with a lead result, the median latest reading is 1.6 ppb; 3 are over 15 ppb right now and 53 have gone over at some point. Northern Lights Terrace's 1.1 ppb sits at the 41st percentile in Alaska and the 57th nationally (higher means more lead).
Nearby utilities
78 other systems share Matanuska-Susitna Borough County; 30 of them have a higher latest lead result than Northern Lights Terrace. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Wasilla Water System | 18,492 | 3.1 ppb |
| Palmer Water System | 8,111 | 2.3 ppb |
| Unified Alaskan Utilities Settlers Bay | 2,733 | 0.72 ppb |
| Talkeetna Water System | 1,850 | 1.4 ppb |
| Valley Utilities Llc | 1,590 | 5 ppb |
| Country Field Water Co. | 1,166 | 0.54 ppb |
| Equestrian Acres | 950 | 1.6 ppb |
| Victoria Estates | 912 | 2.14 ppb |
| Trapper Creek Watering Point | 500 | 0 (not detected) |
| Unified Alaskan Utilities Midtown Est | 495 | 0.9 ppb |
Next steps for Big Lake, AK
Test your own tap with a certified lab first-draw sample; Big Lake, AK 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 Northern Lights Terrace 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. More in what a past exceedance means today.