Sewer Lateral Inspection Requirements by City

Requirements at a Glance

The figures below describe the current normalized dataset. They will move as more jurisdictions are verified; the Pennsylvania count in particular is a floor because the Allegheny County dye-test cluster is still being folded in.

Source: GrandRapidsSewerLineRepair.com Research, compiled from issuing-agency and ordinance sources. See the methodology section for how each row was verified. Counts reflect the normalized dataset; verified expansion jurisdictions (notably the Allegheny County, PA cluster) are documented in the Pennsylvania section. Last verified July 20, 2026.

Which Cities Require a Sewer Lateral Inspection Before Selling a House?

In the areas we verified, most programs require some form of sewer-lateral inspection or compliance step at sale — but the obligation attaches to the serving wastewater agency, the property type, the age of the home, and any prior certificate, not simply to the city. The safest way to read any single row is: this is what the issuing agency published, as of the date we checked it. Confirm the serving agency for the specific address before relying on it.

Rather than reprint the whole database here, here is a representative slice showing how differently three programs in three states handle the same life event — selling a house.

Sources: EBMUD Private Sewer Laterals; City of Austin, MN Point of Sale Requirements; Mt. Lebanon Dye Test Information. Last verified July 20, 2026.

Is It the City or the Sewer District That Decides?

Check the wastewater agency that serves the property, not just the postal city. A mailing city can contain more than one sanitary district, a regional utility can cover only part of a city, and the requirement — or the absence of one — belongs to the agency, not the city line on the tax record. Getting this wrong is the single most common way people reach a false conclusion.

This is why our database treats the serving agency as a first-class field, and why a confident wrong answer is worse than an honest “we need one more piece of information.”

The Three Regional Models — and the One Federal Law Behind All of Them

Point-of-sale sewer rules are not scattered at random. They cluster into three regional models — a California certificate model, a Minnesota inflow-and-infiltration model, and a Pennsylvania dye-test model — and all three trace back to the same root cause: federal Clean Water Act pressure to keep clean water and stormwater out of sanitary sewers. Once you see the pattern, the map stops looking arbitrary.

The shared enemy is a pair of plumbing problems the industry calls inflow and infiltration, or “I/I”: inflow is clean water piped into the sanitary sewer on purpose (a sump pump, a roof drain), and infiltration is groundwater seeping through cracked pipe. Both waste sewer capacity, both spike flows during storms, and both push treatment plants toward the overflows that violate federal law. When a regulator forces a region to fix it, the region often reaches for the same lever — the private lateral, checked at sale.

California: the Private Sewer Lateral certificate of compliance

California’s programs, concentrated in the San Francisco Bay Area, require a Private Sewer Lateral certificate of compliance triggered by a sale and often by a major remodel or a water-meter change. The defining feature is that a passing camera video frequently is not enough on its own — several programs require a witnessed pressure test before they will certify the line. The regional driver is a set of EPA and California Regional Water Quality Control Board orders aimed at reducing sanitary sewer overflows.

The clearest example is the East Bay Municipal Utility District (EBMUD) Regional PSL program, which covers Oakland, Alameda, Albany, Emeryville, Piedmont, El Cerrito, Kensington and the Richmond Annex under one shared ordinance. A compliance certificate is required before sale, before a remodel over $100,000, and on a water-meter size change. The owner’s contractor runs a CCTV inspection first, but EBMUD then witnesses a verification test — a hydrostatic (water) or low-pressure air test — and a copy of the camera video alone does not qualify. The certificate is good for 20 years after a full replacement, or 7 years after a repair or a clean pass. Can’t finish before closing? EBMUD offers a six-month time-extension certificate backed by a $4,500 refundable deposit.

San Mateo County shows how much the fine print varies even within one region. San Bruno has required inspection and certification of the lateral before sale for homes over 50 years old since May 8, 2015. San Mateo’s ordinance (Ord. 2020-1) applies only to detached one- and two-family dwellings and is triggered by a sale, a remodel of $90,000 or more, a sewer overflow at a commercial or multifamily building, or a sewer-class change — unless the lateral was inspected within the last five years (with any repairs completed) or fully replaced within the last 25 years. It even publishes a numeric pass standard: no structural grade-5 defects, no operational grade-4 or -5 defects, and a total defect score under 13. Burlingame goes a different direction again — it requires a city-witnessed water-exfiltration or air-pressure test, will not accept a video inspection as the ordinance test, and is careful to note the test only checks for groundwater infiltration, not roots, alignment, or blockages. South San Francisco adopted its ordinance effective June 21, 2022, after estimating that more than a third of the city’s houses had laterals at risk of failure.

Marin County adds another patchwork of district programs, including Sanitary District No. 5 (Belvedere and Tiburon), whose Ordinance 2014-02a requires a CCTV inspection when you buy or sell, do more than $50,000 of work in three years, or when a nearby main or road project happens — with an exemption for laterals installed or replaced within 20 years, or inspected within three years with repairs done.

Minnesota: the inflow-and-infiltration (I/I) compliance model

Minnesota’s programs, concentrated in the Twin Cities metro and the Iron Range, require an I/I compliance inspection at the point of sale — typically a televised look at the sewer service combined with a check for sump pumps, roof drains, and other clean-water connections. The regional driver is the Metropolitan Council’s I/I surcharge program and Minnesota Pollution Control Agency pressure on peak flows. These programs often look at more than just the pipe.

Austin, Minnesota is the freshest case and a useful window into how these rules actually get made. The city adopted a point-of-sale ordinance in April 2025, hit immediate pushback from realtors and homeowners, delayed it twice, and finally set it live: as the city’s page now states, “Effective March 1, 2026: All properties are required to complete a sump pump and sewer service inspection at the time of property transfer.” The motivation is textbook I/I — city officials told local reporters the treatment plant can spike to seven times its normal flow during a rain event, drawing questions from the state pollution agency.

Elsewhere in the metro, the pattern repeats with local variations. St. Anthony Village pairs a sump-pump inspection with a televised sewer line you upload for review, and requires any sump-pump violation to be corrected within 14 days. Golden Valley televises the sanitary service and checks sump pumps, roof drains, and improper connections, gives owners an initial 180 days to correct problems (with another 180 possible), and voids the inspection if repairs aren’t completed within a year — forcing a restart. The through-line: in Minnesota, a “sewer inspection” often includes hardware a Bay Area camera crew would never look at.

Pennsylvania: the Allegheny County dye test — plus a scattered second model

Pennsylvania runs two different models. The dominant one, across dozens of municipalities in Allegheny County, is a stormwater dye test at the point of sale — checking whether roof and yard drains illegally feed the sanitary sewer — driven by the ALCOSAN and 3 Rivers Wet Weather federal consent decree. A second, looser set of lateral-CCTV-at-transfer ordinances appears in other counties. The dye test is the part most out-of-state readers have never heard of.

A dye test is exactly what it sounds like: a plumber flushes bright fluorescent dye into a downspout or drain, then watches whether it surfaces in the sanitary sewer at a downstream manhole. If it does, there’s an illegal stormwater connection to fix. Mt. Lebanon passed its point-of-sale dye-test ordinance in 2004 in response to a federal mandate; the ordinance itself makes it unlawful to sell or convey a property without first delivering “Evidence of Compliance.” A passing dye test is good for three years, the plumber must be registered and licensed in Allegheny County, and evidence must be filed at least ten business days before closing with a $50 fee. The community’s own history tells you why this exists: Mt. Lebanon began dye testing in 1987, had tested about 9,000 homes by 1996 — with roughly 20 percent found in violation — and by the early 2000s had tested every house in the municipality.

The ALCOSAN service area — communities whose sewage flows to the Allegheny County Sanitary Authority — is dotted with similar ordinances. Upper St. Clair Township layers both requirements: a September 2017 ordinance, effective January 1, 2018, requires a NASSCO-certified contractor’s CCTV video before the close of any sale, plus a separate dye test. Mt. Lebanon’s own municipal magazine reports that Fox Chapel, Monroeville, Plum, Brentwood, and South Fayette run comparable lateral-testing ordinances, and the City of Pittsburgh requires an Evidence of Compliance certificate through the Pittsburgh Water and Sewer Authority. ALCOSAN’s planning documents describe a wave of these ordinances “to address testing/repair of private sewer laterals at the time of sale or transfer of property.”

Outside Allegheny County, Pennsylvania’s rules look more like the CCTV-at-transfer ordinances found elsewhere — for example, Monongahela adopted Ordinance 1 of 2025 (effective August 1, 2025) requiring dye, smoke, or air testing plus CCTV and a condition report, and West Norriton Township requires a lateral inspection within 60 days before transfer. These are real and current, but they don’t share the single clean regulatory story that the Allegheny cluster does.

What Actually Counts as an “Inspection”? CCTV vs. Pressure Test vs. Dye Test

The word “inspection” hides three different tests that answer three different questions, and passing one does not mean you’ve passed another. A CCTV camera shows pipe condition; a pressure or leak test proves the pipe is watertight; a dye test finds illegal stormwater connections. Some programs accept a video, some explicitly reject it, and some require a combination.This is the distinction that costs people the most time and money when they assume “a sewer scope” is one universal thing.

Sources: EBMUD; Burlingame Sewer Lateral Test; Mt. Lebanon Dye Test Information. Last verified July 20, 2026.

The practical takeaway: a private camera inspection you order yourself is useful diagnostic information, but in several programs it is not the document the agency needs to let you close. Read the specific program before you book anything.

Is a Sewer Scope Required When Selling a House?

Not everywhere, and not always sufficiently. A private sewer scope is not universally mandated, and where an agency does require compliance, a scope may not meet the standard — some programs demand a pressure test, an agency witness, or a dye test instead of or in addition to a camera. The confusion usually comes from mixing up two different things that happen to involve the same pipe.

Source: GrandRapidsSewerLineRepair.com Research, based on the program rules cited throughout this page. Last verified July 20, 2026.

If you take one idea from this section: a home inspector’s recommendation to “get a sewer scope” is good advice, but it is not the same as the legal question of whether your serving agency requires a compliance step at sale. Answer both separately.

What Happens if the Sewer Lateral Fails Before Closing?

A failed inspection does not lead to one universal outcome. Depending on the program, the seller may have to repair before closing, the buyer may be allowed to assume the work under a signed agreement, or the agency may accept a deposit or extension so the sale can close with repairs to follow.“You can’t sell a house with a bad lateral” is a myth in many jurisdictions — but the alternative path is specific and paperwork-driven.

Sources: City of Morgan Hill Utility Inspections at Property Sale; EBMUD Private Sewer Laterals. Last verified July 20, 2026.

How Long Is a Sewer Compliance Certificate Good For?

There is no standard term. Validity depends on what happened to the pipe — a clean pass, a repair, a lining, or a full replacement — and some programs issue a one-time transaction document rather than a reusable certificate.Treating certificate validity as a single average would be misleading, so we don’t.

Sources: EBMUD; City of San Mateo; Sanitary District No. 5; Mt. Lebanon. Last verified July 20, 2026.

The spread — from a single transaction to two decades — is the point: the more permanent the fix, the longer the paperwork lasts.

What’s Changed Recently

Point-of-sale sewer rules are moving targets — new ordinances get adopted, delayed, and amended independently, and a fee or effective date can shift without much notice. We track what changed, when it took effect, and the official source behind it. Recency is not a nice-to-have on this topic; a stale row can send someone into a closing with the wrong plan.

Source: GrandRapidsSewerLineRepair.com Research change log; see each linked source for full text. Last verified July 20, 2026.

Full Sewer Lateral Inspection Requirements Database

The table below covers all 22 programs published in Version 1.0 of this database, spanning 9 California programs, 3 Minnesota programs, and 10 Pennsylvania programs. Each row links to the issuing agency or ordinance as the primary source.Rows marked “Required †” are verified from planning-document or secondary sources rather than a direct primary-source read; all others are verified from the issuing agency. Confirm the specific program before relying on any row.

† Rows marked “Required †” are verified from ALCOSAN planning documents or the Mt. Lebanon municipal magazine; they are awaiting direct primary-source confirmation and carry lower confidence than fully verified rows. Source: GrandRapidsSewerLineRepair.com Research, Version 1.0. Every row is linked to the issuing agency or ordinance above. Last verified July 20, 2026.

How to Check the Rule for a Specific Address

Start with the serving wastewater or sanitary-sewer agency, not the postal city. Then check whether your specific situation — the planned sale or transfer, the property type, the age of the home, and any existing certificate — activates that agency’s rule. The order matters, because the agency determines everything downstream.

1. 1Find the serving agency. Check a recent sewer or utility bill, the agency’s official service-area map, or the municipal utility record. In multi-district cities (San Rafael is the cautionary tale), this step is the whole ballgame.
2. 2Open the agency’s current program page and ordinance. Confirm whether a rule exists, and whether it’s a full requirement, a conditional one, an official statement that no rule applies, or simply unaddressed.
3. 3Match your trigger and check for exemptions. Sale or transfer is the usual trigger, but watch for remodel-value thresholds, water-meter changes, property-age cutoffs, and recent-inspection or recent-replacement exemptions.
4. 4Note the method, the deadline, and the cost — and the date you checked. Rules and fees change; a verification date is what keeps your answer honest.

How We Built This Database

We assembled each row from official municipal, sanitary-district, wastewater-utility, ordinance, and program sources — and we published a jurisdiction only when the consequential claims could be traced to current official evidence and given a verification date.Where we couldn’t confirm something, we left it out rather than guess.

Our source hierarchy, in order of authority:

1. 1.The current ordinance or municipal code
2. 2.The agency’s current official program page
3. 3.Official administrative regulations, forms, fee schedules, and program FAQs
4. 4.Board packets or public notices establishing a recent change
5. 5.Secondary sources — trade write-ups, news reports, plumber pages — for lead discovery only, never as the final authority for a published fact

A note on that last point, because it’s a real hazard here. Aggregator and vendor pages routinely restate sewer rules with confident specifics that don’t survive a look at the primary source. We treated those pages as tips to chase, then confirmed — or discarded — each specific against the issuing agency. When a claim couldn’t be found in official material, it didn’t make the cut.

How we count.A city count and a program count are not the same thing, and conflating them inflates coverage. One regional utility can impose a single rule across many municipalities — EBMUD’s shared ordinance covers eight East Bay communities — and one mailing city can contain several districts with different rules (San Rafael again). We assign a program identifier so that eight EBMUD communities read as one researched program, not eight, and so that an answer for one San Rafael district is never silently applied to the other.

Four evidence states, kept separate:

• ·Required — Current official material establishes the requirement.
• ·Conditional — The requirement depends on age, property type, serving district, or a specific trigger.
• ·Affirmatively no requirement — A current official source expressly says the requirement does not apply (San Rafael’s SRSD district is our confirmed example).
• ·Not verified — We did not establish a current official answer. This is not evidence that no rule exists.

We independently read the primary sources for the findings this article leans on — the San Rafael two-district split, the Austin, Minnesota timeline, the East Bay EBMUD program, the Allegheny County dye-test ordinances in Mt. Lebanon and Upper St. Clair, and the California age-threshold and buyer-assumption examples in San Bruno, San Mateo, and Morgan Hill. Other rows carry the issuing-agency source we relied on and a per-row confidence flag; a handful are marked at lower confidence where the official material confirms the trigger but doesn’t publish every fee, deadline, and certificate detail in one place. We would rather show you that flag than hide it.

Limitations

This is a curated launch dataset, not a complete inventory of every municipality or sewer district in the United States, and it should be used as a research starting point rather than a final legal determination for any specific property.

• ·Coverage is partial. We focused first on the three states where point-of-sale lateral rules cluster. Many jurisdictions elsewhere are not yet represented.
• ·A city can contain more than one sewer agency and a regional program can cover only part of a city. The serving agency must be confirmed before any row is applied to an address.
• ·“No requirement found” is not the same as “no requirement exists.” We use the affirmative no-requirement label only when an official source expressly supports it.
• ·Rules, fees, forms, and certificate terms change after the date we checked. Every row carries a verification date for exactly this reason.
• ·This is educational, not advice. It does not provide legal, title, engineering, inspection, or transaction advice. The issuing municipality, utility, or sanitary district controls the final requirement.

Frequently Asked Questions

Downloads and Version History

The underlying records are available in a reusable, machine-readable format with a row-level source and verification date per entry.

About This Research

GrandRapidsSewerLineRepair.com Research publishes independently assembled, source-linked sewer infrastructure reference datasets. We are not a government agency and do not determine municipal compliance; our role is to make scattered municipal requirements comparable and traceable to their official sources.

• How it was produced:Official-source review and field normalization, described in the methodology above
• Why it exists:So a reader — or a writer covering this topic — can compare unlike municipal programs without opening dozens of ordinance pages and normalizing the terminology by hand

Publisher disclosure: GrandRapidsSewerLineRepair.com is a commercial publisher and independent service-request website. This research page contains no service-request form, provider recommendation, paid placement, commercial link, or embed. Educational reference, not legal advice.

Sources

• ·EBMUD — Private Sewer Laterals (East Bay Municipal Utility District)
• ·City of San Bruno — Point-of-Sale Sewer Lateral Requirements
• ·City of San Mateo — Private Sewer Lateral Ordinance (Ord. 2020-1)
• ·City of Burlingame — Sewer Lateral Test
• ·South San Francisco — Point-of-Sale Lateral Ordinance (SM Daily Journal / City)
• ·Sanitary District No. 5 (Marin) — Permits and Sewer Lateral Inspections (Ord. 2014-02a)
• ·San Rafael Sanitation District (SRSD) — Sewer Laterals FAQ
• ·Las Gallinas Valley Sanitary District (LGVSD) — Sewer Laterals
• ·City of Morgan Hill — Utility Inspections at Property Sale
• ·City of Austin, MN — Point of Sale Requirements
• ·Austin Daily Herald — City Council Opts to Delay Point-of-Sale Inspection Ordinance to March 2026
• ·City of St. Anthony Village — Inflow and Infiltration
• ·City of Golden Valley — Inflow & Infiltration
• ·Mt. Lebanon — Dye Test Information
• ·Mt. Lebanon — Dye Test Ordinance (ecode360.com)
• ·Upper St. Clair Township — Sanitary Sewers & Dye Tests
• ·3 Rivers Wet Weather — ALCOSAN Service Area Municipalities
• ·City of Monongahela — Ordinance 1 of 2025 (PDF)