Failed your Title 5? How Cape homeowners pay for the fix.

Cost ranges from MassDEP, the state's septic tax credit, Barnstable County's AquiFund loans, and whether the nitrogen rules force an I/A upgrade in Harwich.

Request a free callback

Harwich Septic Help is a free referral service. We are not a septic company and do not pump, inspect, or repair systems. When you send a request, we work on matching you with an independent local septic provider, who must hold the required town permit and may pay us a referral fee. Prices, licensing, scheduling and work are between you and that provider.

How much does fixing a failed Title 5 cost? (sourced ranges only)

We do not quote prices and MassDEP does not regulate them. The only published ranges we rely on come from MassDEP's 2023 FAQ on the Cape nitrogen rules:

$17,000 to $36,000 installed for two nitrogen-removal (I/A) technologies, depending on the existing system and the site.
A homeowner question in the same FAQ reports full-system quotes of $60,000 to $90,000, so higher quotes do happen.
I/A systems add ongoing costs: monitoring (quarterly for Provisional Use technologies, annual for General Use) plus electricity for most systems.

A conditional-pass repair (cracked tank, broken pipe, uneven D-box, pump chamber) is usually a smaller job than a full replacement, but get written quotes. See septic repair.

Source: MassDEP FAQ.

Massachusetts Title 5 septic tax credit

60% of qualifying costs up to $30,000, for a maximum credit of $18,000.
At most $4,000 per year; unused credit carries forward up to 5 years.
Owner-occupied principal residence only. Summer homes and non-resident owners do not qualify.
Since tax year 2024 it also covers upgrades required by Title 5 or a watershed permit (DOR TIR 24-14).
Claimed on Schedule SC with your Massachusetts return.

Sources: Mass.gov; 2025 Schedule SC. Not tax advice; ask a tax professional.

Cape Cod AquiFund loans

Barnstable County betterment loans for repairing or replacing failed systems and I/A installs.
Septic repairs, replacements and I/A: 4% and 5% only (0% and 2% are for new sewer connections).
Listed, or expected to list, for sale within 12 months: 5% only.
Up to 20 years; can include engineering; paid directly to the contractor; the balance is due on sale.
Primary, seasonal and secondary homes and condos are eligible.

Source: Cape Cod AquiFund (774-330-3010). Rates subject to change.

MassHousing Septic Repair Loan (income-eligible owners)

Low- and no-interest loans up to $25,000 to repair or replace a failing or non-compliant system, through participating community lenders.
For owner-occupants of 1- to 4-family homes, including condominiums.
Income limits (all Massachusetts communities): $69,500 for the deferred loan, $139,000 for the amortized loan.
No appraisal required; closing costs can be rolled in; the project must be completed within 6 months of closing.

Mass.gov also lists FHA and USDA Rural Development programs, and local Board of Health betterment loans under the Community Septic Management Program. Note that Mass.gov's older financial-assistance guide still shows a $6,000 tax credit; the current Mass.gov tax-credit page and Schedule SC show the higher limits above.

Sources: MassHousing (617-854-1000); Mass.gov financial assistance guide.

Selling with a failed system?

The Cape Cod & Islands Association of REALTORS legal hotline notes that a failed Title 5 can make conventional financing very difficult, and that the owner or buyer can sign an enforceable Board of Health agreement to upgrade or connect to sewer within 2 years after transfer. AquiFund's 5% rate applies if the home is listed for sale within 12 months, and the balance is due at sale. See the Harwich seller's guide.

Source: CCIAOR Legal Hotline.

Will I be forced into a nitrogen-reducing system?

The 2023 Title 5 and Watershed Permit rules (310 CMR 15.000 and 314 CMR 21.00) designated Cape watersheds with an EPA-approved nitrogen limit as Natural Resource Nitrogen Sensitive Areas. In those areas, existing systems face a 5-year upgrade requirement, but a town filing a Notice of Intent, Watershed Permit application or de minimis exemption application pauses that requirement for the watersheds covered, subject to the conditions in 310 CMR 15.215(2).

Status as of the June 11, 2026 MassDEP table: Harwich shows filings for the Wychmere Harbor (24-WP94-0006), Herring River (24-WP94-0007), Squatucket Harbor (24-WP94-0005) and Allen Harbor (24-WP94-0004) watersheds, and Pleasant Bay is covered by the existing Watershed Permit. The pause depends on the towns following through, so check the latest table and your town's plan. Harwich's wastewater plan includes future sewer phases; ask the town whether your street is in one before choosing an expensive I/A system.

A failed system still has to be fixed within the Title 5 deadline, and the Board of Health decides what the replacement must meet.

Sources: MassDEP status table (6/11/2026); 314 CMR 21.00; MassDEP FAQ; Harwich CWMP.

What should you do after a failed inspection?

Read the inspection report: which component failed, and is it conditional-pass eligible?
Talk to the Harwich Health Department (508-430-7509) about the deadline. Selling? See the seller's guide for Harwich's escrow option.
Get written quotes from licensed designers and installers.
Apply to AquiFund once the system is certified failed; do not pay deposits you expect the loan to cover (AquiFund does not reimburse).
Keep receipts for the Schedule SC tax credit if the home is your principal residence.

How Harwich Septic Help works

Tell us what is going on. Use the short form: your town, the problem, and how urgent it is. It takes about a minute.
We work on matching your request with one independent provider who serves your town and must hold that town's permit. In Harwich, septage haulers need a Board of Health permit and Title 5 inspectors must be on the town's approved list, so ask the provider to confirm they are on the current list.
The provider contacts you directly, quotes the job and does the work. Price, scheduling and the work are between you and the provider. The referral is free to you; the provider may pay us a fee.

We are not a septic company, inspector or installer, we do not have an office you can visit, and we do not publish reviews or prices we cannot verify.

Request a call back from a local septic provider

Tell us your town and what is going on. We work on matching your request with an independent septic provider serving your area, who must hold the required town permit and contacts you directly. There is no charge to you for the referral.

Sewage backing up or septic alarm sounding? We have not yet confirmed a provider, so call a licensed septic hauler now from the Town of Harwich licensed septic hauler list. You can still send a request marked Emergency — today.

Frequently asked questions

How much does it cost to replace a failed septic system on Cape Cod?

We do not quote prices. MassDEP's 2023 FAQ reports $17,000 to $36,000 installed for two nitrogen-removal (I/A) technologies, depending on the existing system and site, and notes a homeowner reporting full-system quotes of $60,000 to $90,000. I/A systems also carry ongoing monitoring and electricity costs. Get written quotes.

What is the Massachusetts septic tax credit?

The Title 5 credit is 60% of qualifying costs up to $30,000, for a maximum of $18,000, claimed at no more than $4,000 per year, with unused credit carried forward up to 5 years. It is only for an owner-occupied principal residence, so summer and second homes do not qualify. It is claimed on Schedule SC.

What interest rate does AquiFund charge for septic repairs?

Per Barnstable County, septic repairs, replacements, upgrades and I/A installations are eligible only for 4% and 5% betterment loans; properties listed or expected to be listed for sale within 12 months get 5%. The maximum term is 20 years, and the balance is due if the property is sold. Rates are subject to change.

Is there a septic loan for lower-income homeowners?

MassHousing's Septic Repair Loan Program offers low- and no-interest loans up to $25,000 for owner-occupants of 1- to 4-family homes, with income limits of $69,500 (deferred loan) and $139,000 (amortized loan); the project must be finished within 6 months of closing. Apply through a participating lender.

Do seasonal homes qualify for AquiFund?

Yes, AquiFund lists primary, seasonal and secondary residences and condominiums as eligible residential properties. Rental and seasonal properties are eligible for the 4% and 5% rates only.

Do I have to install a nitrogen-reducing I/A system in Harwich?

The 2023 rules can require existing systems in nitrogen sensitive watersheds to upgrade within 5 years, but a town filing pauses that. As of the June 11, 2026 MassDEP table, Harwich filed Notices of Intent for the Wychmere Harbor, Herring River, Squatucket Harbor and Allen Harbor watersheds, and Pleasant Bay is covered by its existing Watershed Permit. A failed system still has to be fixed, and the Board of Health decides what the replacement must meet.

Sources

Facts on this page come from these official and public sources. Rules change; confirm with your local Board of Health.