Water and sewage · Town money, debt and taxes · Lawsuits

Mount Brydges sewage plant: costs, votes and lawsuit

Full title: Mount Brydges Sewage Treatment Plant · Written by John Farrugia

First publishedOctober 17, 2026

Last updatedOctober 27, 2026

Records checked up toOctober 17, 2026

Full report22 pages, with every source

This report explains why the Mount Brydges sewage plant has had trouble meeting its pollution rules, how the cost of fixing it grew, how Council voted, and why two neighbouring families are suing.

What happened

The Mount Brydges sewage plant was built in 2009-2012 on top of the old, closed township dump on Mill Road. Staff say it started having trouble removing ammonia, a pollutant in sewage, in 2018.
In June 2025 the Ministry of the Environment wrote that the plant was repeatedly releasing partly treated sewage, and asked the town for a short-term and a long-term plan.
The price of fixing it kept rising: about $8.5 million in December 2022, then about $13 million in a September 2025 staff estimate. In December 2025 Council hired a builder for $9.66 million, plus $966,000 for unexpected costs.
Neighbours and developer Sifton Properties asked Council to wait for a full environmental study first. In September 2025 two neighbouring families sued for $10 million. Their claims have not been proven in court.
On December 1, 2025 the families offered to put the lawsuit on hold if the rebuild waited for the study. Council approved the rebuild contracts that same night. The study is not expected to finish until fall 2027 - after the rebuild.

Why it matters to you

Millions of dollars are being spent to rebuild the plant on its current site before the study decides whether that site is right. Much of what residents would need to judge these decisions has not been made public.

Words with a dotted underline: tap them to see what they mean.

What the evidence shows

Shown in recordsTown documents, minutes or other official records show this.Reported, not provenSaid in the news, by a person, or claimed in court. Not proven by records.Still unansweredA question the records do not answer yet.

Shown in recordsThe plant's 2023 annual report shows it met its ammonia limits in only 1 of 8 warm months and none of the 4 cold months, while handling only about 40% of the sewage it was built for. page 4
Shown in recordsThe Ministry's June 2025 letter found repeated releases of partly treated sewage, but it did not require any particular treatment method and it allowed the study route if short-term measures stopped the pollution in the meantime. page 7
Shown in recordsIn the recorded votes where his name appears, Mayor Grantham voted for the March 2024 short-term fix and the September 2025 rebuild, and against the November 2024 motion to work with the neighbours and the March 2025 motion to pause; he does not appear in the April 2023 recorded vote. page 2
Shown in recordsThe December 1, 2025 rebuild contracts are recorded only as 'Carried', with no recorded vote, so how each member voted is not known. page 6
Shown in recordsMayor Grantham said the decision turned partly on 'contractual obligations' to developers, but the Westdell agreements say the town made no promise about sewage capacity and no Sifton agreement was found; staff had, however, warned of legal risk from 'implied' commitments. page 8
Shown in recordsFrom January 2024 to September 2026 the town paid R.V. Anderson $1,422,245 for all its work; only $296,178 is labelled Mount Brydges, and most other payments just say 'Professional Services'. page 9
Reported, not provenThe neighbouring families claim in their lawsuit that the plant breaks a 1999 settlement about the old dump and that pollution from the dump has reached their farms; none of this has been proven, and the town and province have not yet had their side heard in court. page 10
Reported, not provenAccording to automatic captions of the December 1, 2025 meeting, the chair asked a councillor, identified from context as Councillor Derbyshire, whether he might have a conflict; the report does not decide whether any rule was broken. page 12
Still unansweredWhether the rebuild should have waited for the environmental study is the main question in the neighbours' lawsuit, and no court has decided it. page 13

Key numbers

Engineers' estimate for the whole project, December 2022$8.5 million page 1

Staff estimate for the rebuild, September 2025about $13 million page 1

Construction contract, December 2025$9.66 million, plus $966,000 for unexpected costs page 1

Paid to R.V. Anderson for all its work, Jan 2024 - Sep 2026$1.42 million page 2

Amount the neighbouring families are suing for$10 million page 2

Green Municipal Fund low-interest loan for the construction$6.65 million page 5

Still unanswered

Why the 1996 study chose the old dump for the plant; that study is not public and no record explains the choice.
The terms of R.V. Anderson's 2018 consulting retainer, payments to the firm before 2024, and which later payments were for which project.
The legal advice on the lawsuit, whether anyone answered the families' December 2025 offer, and what the 1999 settlement actually says.
Whether any agreement with Sifton exists, and which earlier approvals staff believe carry an 'implied' promise of sewage capacity.

What's in the full report

What you need to know page 1
Background: how we got here, 1958 to 2022 page 2
1. The plant and what went wrong page 4
2. What it was expected to cost page 5
3. How Council voted page 5
4. What the official documents say page 6
5. The engineering firms page 9
6. The neighbours, the developers and the lawsuit page 10
7. Other sites being studied page 13
8. What Mayor Grantham said page 14
9. What the public has not been shown page 14
Words explained page 15
Notes page 15
References - clickable links page 15
Updates and corrections page 19

Words used in this report

WWTF / WWTP: Short for wastewater treatment facility or plant - the sewage treatment plant.
Ammonia: A pollutant in sewage that harms fish; plants must remove most of it before releasing treated water.
RBC (rotating biological contactor): The plant's original treatment units: large, slowly turning discs that grow the bacteria that clean sewage.
Extended aeration: A treatment method that pumps air into tanks so bacteria can break down sewage; the rebuild switches the plant to it.
Environmental assessment (EA), Schedule C: A formal provincial study of a project's effects and of other options, with public meetings; Schedule C is the most detailed kind.
Leachate: Polluted water that seeps out of a dump.
Sole source: Giving a contract to one firm without inviting competing bids.
Retainer: A standing arrangement that lets staff hand a firm work without a separate Council vote each time.
Recorded vote: A vote where each member's yes or no is written in the minutes.
Contingency: Extra money set aside in a contract for unexpected costs; it is only spent if needed.

Updates and corrections

Every change to this report is listed here. An Update adds new information. A Correction fixes a mistake. A Minor change is wording, layout or branding only.

Minor change October 27, 2026
The contact email for questions and corrections is now [email protected]. Nothing else changed.
Minor change October 19, 2026
Replaced the publication logo with the new approved Council Watch logo; no text, findings or sources changed.
Update October 18, 2026
Added a new part on the December 1, 2025 meeting, where the chair raised a possible conflict with a councillor, based on automatic captions, the minutes and the two councillors' step-aside emails; it reaches no conclusion on whether any rule was broken.
Correction October 18, 2026
Changed the wording on why Councillors Derbyshire and Willsie stepped aside from the lawsuit: it had said they 'publicly agreed' with the neighbours, but their emails only say they had at times expressed views consistent with some of the neighbours' positions.
Minor change October 18, 2026
Applied Council Watch branding, publication details, clickable citations and standard time ranges for video and radio references; findings and the research cutoff (October 17, 2026) unchanged.
Correction October 18, 2026
Fixed meeting-video times to match the caption files and corrected a Sifton quote to match the captions ('buys the municipality time...').
Correction October 18, 2026
Corrected the summary of Mayor Grantham's votes, which had overstated the record: he does not appear in the April 2023 recorded vote, the April 2024 tally does not count the proxy vote, Councillor Hipple was added to those who voted the other way, and it now says Kennes moved and Grantham seconded the January 2024 motion; his recorded positions are unchanged.
Update October 17, 2026
Added a 'Mayor / Reeve at the time' column to the 1958-2022 background timeline, with a note explaining Reeve versus Mayor.
Update October 17, 2026
Added newly read details: the $80,000 contingency on the short-term fix, the unexplained gap between CIMA+'s written proposal and the amount in the minutes, River Birch's 2023 'nearly double' finding, and a paragraph on CIMA+'s environmental study bid.
Update October 17, 2026
Added the 'About this review' box on page 1, naming the author, the kinds of sources, the use of an AI tool, and the report's limits.
Original publication October 17, 2026
First public release, shared in local Facebook groups on the morning of October 17, 2026.

This page is a short guide to the full report. If they ever seem to differ, the full report is the record. Questions or corrections: [email protected].