# Maine LD 2187: An Act to Update Certain Water Quality Standards and to Reclassify Certain Waters of the State Maine LD 2187, An Act to Update Certain Water Quality Standards and to Reclassify Certain Waters of the State, is a 132nd Maine Legislature (2025-2026) Senate bill sponsored by no sponsor on record; status signed, last action 2026-04-03 (Signed by Governor, ACTPUB Chapter 616) (as of 2026-10-17). - Canonical: https://policyrisk.com/state-bill/ME-LD2187-132 - As of: 2026-10-17 - Plain-text twin of the page above; the HTML and this file carry the same facts. ## Facts - Bill: Maine LD 2187 - State: Maine - Session: 132nd Maine Legislature (2025-2026) - Title: An Act to Update Certain Water Quality Standards and to Reclassify Certain Waters of the State - Status: signed - Chamber: Senate - Introduced: 2026-02-03 - Last action: 2026-04-03, Signed by Governor, ACTPUB Chapter 616 - Sponsors: no sponsor on record - Cosponsors: 0 - Subjects: WATER QUALITY, WATER QUALITY - CLASSIFICATIONS - Touches household money: no - Roll calls: 2 (119 yes, 56 no in all) - Economic provisions PRIA read: 4 ## Summary No summary available. ## Bill overview: provisions PRIA read - Oxygen protections for Maine fish habitats: benefit, low. Class B waters must average at least 7 parts per million dissolved oxygen and 75% saturation daily. No individual oxygen reading may fall below 6 parts per million. In identified spawning areas, stricter Class B limits apply from October 1 through May 14. The 7-day mean must reach 9.5 parts per mil… - Updated protections for Maine freshwater life: benefit, low. Class AA, A, and GPA waters must support naturally occurring aquatic life, except for state-approved fish stocking and management. Class AA E. coli limits are a geometric mean of 64 CFU or MPN per 100 milliliters over 90 days. No more than 10% of samples may exceed 236 per 100 milliliters in any 90… - Updated protections for named Maine streams: benefit, low. Abbott Brook and its tributaries are Class AA, with the designation no longer limited to Lincoln Plantation. Mount Blue Stream and its tributaries move from Class A to Class AA. The Pleasant River’s Middle Branch and its tributaries are also Class AA. Tributaries entering between Avon Valley Road a… - Updated standards for Maine coastal waters: benefit, low. Class SB and SC waters must have a pH of 7.0–8.5, subject to the exception in 38 MRS §464(4)(C). Class SB dissolved oxygen must be at least 85% saturation; the law also updates Class SC oxygen requirements. Both classes have enterococcus bacteria limits and shellfish-related standards aligned with… ## Sponsors and cosponsors - (none) ## Roll call votes | Date | Chamber | Motion | Result | Yes | No | Other | | --- | --- | --- | --- | --- | --- | --- | | 2026-03-25 | House | ACC MAJ OUGHT TO PASS REP | pass | 106 | 34 | | | 2026-03-24 | Senate | ACCEPT MINORITY OUGHT TO PASS AS AMENDED REPORT | fail | 13 | 22 | | ## Actions (7) - 2026-04-03: Signed by Governor, ACTPUB Chapter 616 - 2026-03-30: PASSED TO BE ENACTED, in concurrence. (Senate) - 2026-03-26: PASSED TO BE ENACTED. Sent for concurrence. ORDERED SENT FORTHWITH. (House) - 2026-03-25: Reports READ.On motion of Representative DOUDERA of Camden, the Majority Ought to Pass Report was ACCEPTED.ROLL CALL NO. 673(Yeas 106 - Nays 34 - Absent 9 - Excused 1 - Vacant 1)The Bill was READ ONCE.Under suspension of the rules, the Bill was given its SECOND READING without REFERENCE to the Committee on Bills in the Second Reading.The Bill was PASSED TO BE ENGROSSED.In concurrence. ORDERED SENT FORTHWITH. (House) - 2026-03-24: Reports READ. Motion by Senator TEPLER of Sagadahoc to ACCEPT The Minority Ought to Pass As Amended by Committee Amendment "A" (S-569) Report FAILED. Roll Call Ordered Roll Call Number 786 Yeas 13 - Nays 22 - Excused 0 - Absent 0 Subsequently, The Majority Ought to Pass Report ACCEPTED. Bill READ ONCE. Under suspension of the Rules, READ A SECOND TIME and PASSED TO BE ENGROSSED. Sent down for concurrence. (Senate) - 2026-02-10: Report was READ and ACCEPTED.The Bill was REFERRED to the Committee on ENVIRONMENT AND NATURAL RESOURCESIn concurrence. ORDERED SENT FORTHWITH. (House) - 2026-02-03: Reported that the same be REFERRED to the Committee on ENVIRONMENT AND NATURAL RESOURCES, pursuant to the Maine Revised Statutes, Title 38, section 464, subsection 3, paragraph B.Report READ and ACCEPTED.Bill and accompanying papers REFERRED to the Committee on ENVIRONMENT AND NATURAL RESOURCES.Sent down for concurrence. (Senate) ## Bill text - Enacted: [PDF](https://legislature.maine.gov/legis/bills/getPDF.asp?paper=SP0892&item=4&snum=132) - Introduced: [PDF](https://legislature.maine.gov/legis/bills/getPDF.asp?paper=SP0892&item=1&snum=132) ## Related bills - LD 1522: An Act to Establish the Maine Eviction Prevention Program (failed) - LD 2067: An Act to Include Community Mental Health Workers Under the 1998 Special Plan for Retirement (failed) - LD 1665: An Act to Provide Property Tax Relief to Maine Families (failed) - LD 1872: An Act to Reinvest in the Pension Funds of the Maine Public Employees Retirement System (failed) - LD 1611: An Act to Decrease the Retirement Contributions Required for Teachers and State Employees (failed) - LD 1294: An Act to Expand the Dependent Exemption Tax Credit (failed) ## Sources - [Enacted (PDF)](https://legislature.maine.gov/legis/bills/getPDF.asp?paper=SP0892&item=4&snum=132) - [Introduced (PDF)](https://legislature.maine.gov/legis/bills/getPDF.asp?paper=SP0892&item=1&snum=132) ## Related - [LD 1522: An Act to Establish the Maine Eviction Prevention Program](https://policyrisk.com/state-bill/ME-LD1522-132) - [LD 2067: An Act to Include Community Mental Health Workers Under the 1998 Special Plan f…](https://policyrisk.com/state-bill/ME-LD2067-132) - [LD 1665: An Act to Provide Property Tax Relief to Maine Families](https://policyrisk.com/state-bill/ME-LD1665-132) - [LD 1872: An Act to Reinvest in the Pension Funds of the Maine Public Employees Retiremen…](https://policyrisk.com/state-bill/ME-LD1872-132) - [LD 1611: An Act to Decrease the Retirement Contributions Required for Teachers and State…](https://policyrisk.com/state-bill/ME-LD1611-132) - [LD 1294: An Act to Expand the Dependent Exemption Tax Credit](https://policyrisk.com/state-bill/ME-LD1294-132) - [Maine bills](https://policyrisk.com/states/maine/bills) - [Maine state hub](https://policyrisk.com/states/maine) - [All state legislation](https://policyrisk.com/state-bills) Source: PRIA, https://policyrisk.com/state-bill/ME-LD2187-132 (as of 2026-10-17).