Petersburg, AK

Lead detected, under the action levels

Latest 90th-percentile lead: 3.5 ppb (monitoring period 2022-2024). 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 Petersburg

Petersburg serves about 3,218 people through 1,240 service connections, which makes it a small system under EPA's size classes. It is owned by a Native American tribe and draws surface water. EPA system ID: AK2130148; phone on file: 907-772-5432. Call that number and ask whether your address has a lead, galvanized or unknown service line.

Petersburg's lead record

That is up 3.5 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Petersburg is 3.5 ppb across 4 monitoring periods, none of them over 15 ppb.

How Petersburg 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. Petersburg's 3.5 ppb sits at the 78th percentile in Alaska and the 85th nationally (higher means more lead).

Next steps for Petersburg, AK

Test your own tap with a certified lab first-draw sample; Petersburg, 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 Petersburg 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. The lead result guide covers how utilities pick the homes they sample. Size matters more than most people expect: small vs large water systems.