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771 Maine water systems have inventoried 291,891 service lines for EPA. 29 (<0.1%) are confirmed lead and 41,667 (14%) are still of unknown material. Below: every large or city-linked Maine utility ranked by lead lines.
Maine water systems reported 29 lead service lines and 1,575 galvanized lines requiring replacement as of Q2 2026 — <0.1% of the 291,891 lines inventoried and <0.1% of the national lead total, ranking #44 of 51. GREATER AUGUSTA UTILITY DISTRICT reports the most in the state (9).
GREATER AUGUSTA UTILITY DISTRICT (9), BANGOR WATER DISTRICT (4).
Find your utility in the table below, then check its published service line inventory (most utilities post an address-lookup map) or call the number on your water bill. Utilities must notify customers whose line is lead, galvanized-requiring-replacement or unknown. You can also test the pipe entering your home: lead is soft, dull gray, non-magnetic and turns shiny when scratched.
Under EPA's Lead and Copper Rule Improvements, systems must replace lead and galvanized-requiring-replacement lines within 10 years starting in 2027; systems with very high counts can receive longer deadlines. Ask your utility for its replacement plan and whether it covers the homeowner-owned portion.
Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking, flush the tap after water has sat for hours, never use hot tap water for drinking or infant formula, and confirm your actual level with a certified lab test.
Source: EPA SDWIS Service Line Inventory, Q2 2026 snapshot (updated 2026-08-18). Counts are service lines, not people.
750 of the 771 Maine systems in EPA's Q2 2026 report have filed line counts. The 29 confirmed lead lines and 1,575 galvanized lines requiring replacement come from 5 systems — 0.7% of those reporting — so lead pipe in Maine is concentrated in a small share of systems. 41,667 lines (14%) are still of unknown material, below the national share of 22%.
Why unknown lines matter: Under EPA's Lead and Copper Rule Revisions (LCRR), every community water system had to submit an initial service line inventory by October 16, 2024, and lines whose material could not be documented were reported as unknown. The Lead and Copper Rule Improvements (LCRI), finalized in October 2024, require systems to keep identifying those lines, to notify customers served by a lead, galvanized-requiring-replacement or unknown line, and to replace lead and galvanized-requiring-replacement lines — generally within 10 years of the rule's November 1, 2027 compliance date. The LCRI also lowers the lead action level from 15 to 10 ppb. For Maine, that makes the 41,667 unknown lines (14%) the pool from which future confirmed-lead counts will be drawn.
Among the 10 Maine utilities linked to a city report on this site, 4 report at least one lead or galvanized-requiring-replacement line, 1 reports none but still has a quarter or more of its lines unverified, and 5 report no lead with most lines verified. The largest — PORTLAND WATER DISTRICT-GREATER (135,068 served), MAINE WATER COMPANY BIDDEFORD SACO DIV (42,508 served), and BANGOR WATER DISTRICT (27,298 served) — report 0% unknown, 0% unknown, and 4 lead + 405 GRR respectively.
Your own answer is one lookup away: search your utility's service line inventory (usually an address map on its website), or read the water system name and lead results in your latest Consumer Confidence Report. Customers on a lead, galvanized-requiring-replacement or unknown line must be notified by the utility. Failing that, scratch the pipe at the water meter — lead is soft, dull gray, non-magnetic and turns shiny where scratched.
EPA's rule text and timelines are on its Lead and Copper Rule Improvements page. While your line is unverified, our best water filters for lead guide covers NSF/ANSI 53-certified options, and the lead in drinking water guide explains testing and health thresholds.
EPA SDWIS Service Line Inventory, Q2 2026 snapshot (updated 2026-08-18); regulatory dates from EPA's LCRR/LCRI pages.
Community systems serving 50,000+ people plus systems linked to a city report on this site (10 shown). State totals above include every reporting system.
| # | Water system | Status | Lead | GRR | Unknown | Total lines | City report |
|---|---|---|---|---|---|---|---|
| 1 | GREATER AUGUSTA UTILITY DISTRICT ME0090080 · 13,750 served | Lead service lines present | 9 | 89 | 229 | 5,667 | Augusta → |
| 2 | BANGOR WATER DISTRICT ME0090110 · 27,298 served | Lead service lines present | 4 | 405 | 220 | 10,364 | Bangor → |
| 3 | LEWISTON WATER & SEWER DIVISION ME0090830 · 23,720 served | Lead service lines present | 0 | 66 | 6,351 | 9,693 | Lewiston → |
| 4 | AUBURN WATER DISTRICT ME0090070 · 17,245 served | Many lines still unverified | 0 | 0 | 3,373 | 6,214 | Auburn → |
| 5 | BRUNSWICK/TOPSHAM WATER DISTRICT ME0090260 · 18,863 served | Lead service lines present | 0 | 8 | 1,907 | 9,333 | Brunswick → |
| 6 | SANFORD WATER DISTRICT ME0091410 · 14,328 served | No lead service lines reported | 0 | 0 | 66 | 6,226 | Sanford → |
| 7 | PORTLAND WATER DISTRICT-GREATER ME0091300 · 135,068 served | No lead service lines reported | 0 | 0 | 0 | 62,572 | Portland → |
| 8 | MAINE WATER COMPANY BIDDEFORD SACO DIV ME0090170 · 42,508 served | No lead service lines reported | 0 | 0 | 0 | 17,496 | Biddeford →Saco → |
| 9 | KENNEBEC WATER DISTRICT ME0090750 · 22,060 served | No lead service lines reported | 0 | 0 | 0 | 10,372 | Waterville → |
| 10 | PRESQUE ISLE UTILITIES DISTRICT ME0091310 · 6,128 served | No lead service lines reported | 0 | 0 | 0 | 2,474 | Presque Isle → |
A lead or unknown service line means lead can enter water after it leaves the treatment plant, so city-level test results understate what reaches your tap. Filter drinking and cooking water with an NSF/ANSI 53 lead-certified system, and see the lead in drinking water guide or Maine city water reports.
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