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Alabama lead service line map

The 522 community and non-transient non-community water systems in the EPA Service Line Inventory (SDWIS Federal Reports) for Alabama, each with a trigger score for lead service line replacement pressure: a 0–100 prioritisation index built from published records (line counts, funding signals and deadline timing), not a prediction that any system will start a project. Hover, tap or tab to a system for its trigger score, its lines and what the state's SRF list says about it.
State list used: ADEM FY2025 Drinking Water IIJA project priority lists (IUPs posted June-July 2026). 34 of 35 list projects matched to a system on this map, by sponsor name. This is a short list, so most systems here are simply not on it. Two lists are read: the FY2025 IIJA general list and the FY2025 IIJA lead service line list. Any other Alabama list is not included.
522systems scored63lead or galvanized line replacement candidates261,738lines to replace or investigate39with a health-based violation since 202432matched to the state SRF list, any project type14 of them report no lead, galvanized or unknown lines
County shading = replacement pool (lead + galvanized-requiring-replacement + unknown-material lines). Dots = the top 250 systems by trigger score, placed inside the county they serve (SDWIS publishes no coordinates), so position within a county is approximate and systems in one county overlap. Green ring = matched to the state SRF list for any project type.
How the trigger score works

Regulatory pressure (0–40): lead and galvanized-requiring-replacement line counts and unknown-material line counts. A latest lead action-level exceedance would add 6; it is not assessed in this snapshot, so the regulatory score can reach at most 34 here.

On the state SRF list, any project type (0–20): named on the state's project list for any project, lead related or not (+10); principal forgiveness or eligibility (+5); listed projects totalling $1M or more (+5). The +5 for an active project cannot be scored: this list does not state project status. Each card shows what the list says about the project.

Deadline proximity (0–25): days to the 1 November 2027 baseline lead service line inventory deadline. Every system gets 15 points in this snapshot.

Recent change (0–10): needs a change history; every system scores 0 in this snapshot.

The trigger score is a prioritisation index built from published records, not a prediction. It does not say that a listed project is lead related.