VERIFIED 2026 MUNICIPAL DATA Official Water Utility Portals (SwiftComply, WEIRS, TMWA, NYSDOH DOH-1013) & Permitted FOG Haulers
24/7 Backflow Dispatch: (888) 552-7490 FOG / Grease Trap Dispatch: (888) 552-7495
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FlowComply Directory Certified Backflow & Commercial Grease Trap (FOG) Compliance
✓ Verified Boulder & Weld Counties Utility Compliance Guide

Longmont & Boulder County, CO Certified Backflow Testing & Grease Trap (FOG) Directory

Compare 8 verified local providers approved for City of Longmont Water Utility (SwiftComply Backflow Portal (Mandatory as of Feb 2, 2026)) and City of Longmont Wastewater Pretreatment Program 90-day commercial grease interceptor manifests.

$75–$105
Fair Residential Backflow Test
$150–$600
Commercial FOG Pump-Out
8 Verified
Utility-Listed Local Pros
Longmont & Boulder County Fast Compliance Desk Same-Day Filing
Certified Backflow Tester Dispatch
(888) 552-7490
Residential Irrigation, Fire Lines & Commercial RPZ • Direct SwiftComply Backflow Portal Filing
Commercial Grease Trap / FOG Vacuum Truck
(888) 552-7495
24/7 Emergency Backup & Scheduled 90-Day Manifest Pumping
⚠️

Longmont & Boulder County Consumer & Compliance Alert (Verified 2026-10-26)

2026 RULE CHANGE: Longmont no longer accepts emailed PDF test forms. Your certified tester must have an active SwiftComply account ($10 filing fee included in most tester quotes). Hiring an independent tester ($85–$105) saves you up to $52+ per device compared to the City's $137.50 involuntary billing penalty.

POTABLE WATER & IRRIGATION / FIRE

City of Longmont Water Utility Rules

Official Program Backflow Prevention and Cross-Connection Control Program (BPCCP) ↗
Filing Portal & Fee SwiftComply Backflow Portal (Mandatory as of Feb 2, 2026)
$10.00 SwiftComply submission fee per passing test (effective Feb 2, 2026)
Tester Registry View Official Municipal Tester List ↗
Annual Deadline Rule Annual testing window runs April through August/September (or property's assigned due date). Beginning February 2, 2026, all testers MUST submit reports via SwiftComply; emailed reports to backflow@longmontcolorado.gov are no longer accepted. Failed assemblies must be repaired and retested within 60 days.
Non-Compliance Penalty $137.50 per device mandatory City-contracted test fee billed directly to your utility account if overdue, plus staged Notice of Violation enforcement and water shutoff.
Utility Contact (303) 651-8416 • 1100 S Sherman St, Longmont, CO 80501
RESTAURANT & COMMERCIAL KITCHEN FOG

City of Longmont Wastewater Pretreatment Program Rules

Official Program Fats, Oils, and Grease (FOG) Sector Control Program ↗
Mandatory Pumping Schedule Commercial grease interceptors must be pumped completely at least every 90 days (or when FOG + solids reach 25% of liquid volume).
Manifest & Hauler Rule FSEs must maintain cleaning logs and waste hauler manifests on-site for at least 3 years for City Pretreatment inspection.
Violation Fines Notice of Violation, mandatory pumping orders, and municipal code enforcement fines up to $999 per violation.
Environmental Desk (303) 651-8416
Governing Code CDPHE Regulation 11 (5 CCR 1002-11 §11.39) & Longmont Municipal Code

Verified Certified Testers & Permitted FOG Haulers in Longmont & Boulder County

Filter by residential availability, 24/7 emergency response, or direct electronic utility portal filing.

Showing all 8 verified providers
★ Verified Residential-Friendly & Instant Portal Filing Pro

Colorado Backflow Solutions

Backflow Testing✓ Takes Residential Jobs✓ Direct Portal Filing (SwiftComply Backflow Portal)

Owner-operated specialist focused on Longmont domestic and landscape irrigation backflow testing; handles the mandatory 2026 SwiftComply electronic portal filing.

Credentials: ABPA / ASSE Certified Backflow Tester • Longmont SwiftComply Registered Area / Address: Serving Longmont, Boulder & Weld Counties, CO Source: Colorado Backflow Solutions Longmont Compliance Page ↗
Transparent rates starting at $95/device with Longmont SwiftComply portal filing included
Call (303) 651-8416

Streamline Plumbing

Backflow Testing✓ Takes Residential Jobs✓ Direct Portal Filing (SwiftComply Backflow Portal)

Listed on the City of Longmont's official 2026 tester PDF; tests and repairs both residential irrigation PVBs/RPZs and commercial containment assemblies.

Credentials: City of Longmont Official Tester List • Certified Backflow Testing & Repair Area / Address: Longmont, CO Source: City of Longmont Backflow Tester Contact List (7-7-2026 PDF) ↗
Local Longmont flat-rate testing; handles failed DCVA-to-RP irrigation upgrades
Call (303) 772-2250

TJB Backflow Testing

Backflow Testing✓ Takes Residential Jobs✓ Direct Portal Filing (SwiftComply Backflow Portal)

Dedicated backflow testing specialist on Longmont's official utility list accepting single-family residential sprinkler assemblies and HOA properties.

Credentials: City of Longmont Official Tester List • Colorado Certified Cross-Connection Tester Area / Address: Serving Longmont & Boulder County, CO Source: City of Longmont Backflow Tester Contact List (7-7-2026 PDF) ↗
Residential irrigation & commercial backflow testing with SwiftComply submission
Call (720) 308-1475

Backflow Services (Longmont / Front Range)

Backflow Testing✓ Takes Residential Jobs✓ Direct Portal Filing (SwiftComply Backflow Portal)

Long-standing Front Range backflow testing firm recognized by the City of Longmont Water Utility.

Credentials: City of Longmont Official Tester List • Certified Tester & Rebuild Technician Area / Address: Serving Longmont & Northern Front Range, CO Source: City of Longmont Backflow Tester Contact List (7-7-2026 PDF) ↗
Competitive per-assembly testing and 60-day failed assembly repair compliance
Call (303) 469-4635

Longmont Plumbing Co

Backflow TestingGrease Trap / FOG Hauling✓ Takes Residential Jobs⚡ 24/7 Emergency✓ Direct Portal Filing (SwiftComply Backflow Portal)

Provides both backflow preventer replacements (including Longmont's mandatory failed-DCVA to RP upgrades) and restaurant grease trap maintenance.

Credentials: Licensed CO Master Plumber • Commercial Backflow & Grease Trap Maintenance Area / Address: Longmont, CO Source: Longmont Plumbing Co Commercial Services ↗
24/7 commercial plumbing, interior grease trap service, and backflow replacement
Call (720) 208-1501
★ Verified Residential-Friendly & Instant Portal Filing Pro

Sullivan Septic & Excavating

Grease Trap / FOG Hauling⚡ 24/7 Emergency✓ Direct Portal Filing (SwiftComply Backflow Portal)

Local Longmont vacuum truck operator (303-772-4019) specializing in restaurant grease traps, high-capacity exterior interceptors, and City Pretreatment manifests.

Credentials: Boulder & Weld County Permitted Liquid Waste Hauler Area / Address: Longmont & Boulder, CO Source: Sullivan Septic Longmont Grease Trap Division ↗
Scheduled commercial grease trap & exterior interceptor vacuum pumping
Call (303) 772-4019

Flow State Inspections

Backflow Testing✓ Takes Residential Jobs✓ Direct Portal Filing (SwiftComply Backflow Portal)

Longmont-based certified backflow inspection specialist at 2120 Summerlin Ln offering residential irrigation and commercial backflow testing with direct SwiftComply submission.

Credentials: CO Certified Backflow Assembly Tester • City of Longmont 2026 Tester Registry Area / Address: 2120 Summerlin Ln, Longmont, CO 80503 Source: City of Longmont Backflow Tester Contact List (7-7-2026 PDF) & flowstateinspections.com ↗
Residential & commercial backflow testing with SwiftComply filing
Call (303) 829-8665

Everest Mechanical LLC

Backflow Testing✓ Takes Residential Jobs⚡ 24/7 Emergency✓ Direct Portal Filing (SwiftComply Backflow Portal)

Local Longmont mechanical contractor (1254 Sherman Dr Unit 5) on the official City of Longmont backflow tester registry providing testing, repairs, and assembly replacements.

Credentials: CO Certified Backflow Tester • Licensed Mechanical & Plumbing Contractor Area / Address: 1254 Sherman Dr Unit 5, Longmont, CO 80501 Source: City of Longmont Backflow Tester Contact List (7-7-2026 PDF) ↗
Full testing, repair & 60-day DCVA-to-RP upgrades in Longmont
Call (970) 586-0970
LOCAL FAIR-PRICE BENCHMARK CALCULATOR

Longmont & Boulder County, CO Backflow & Grease Trap Cost Estimator

Check what your job should actually cost in Longmont & Boulder County before accepting an inflated quote—and compare against municipal non-compliance penalties.

Longmont & Boulder County Fair-Price Benchmark
$75 – $105
Includes electronic submission to SwiftComply Backflow Portal (Mandatory as of Feb 2, 2026).
Overpriced Quote Alert: Commercial fire/plumbing firms in Longmont & Boulder County frequently quote $250+ for single-valve visits. City non-compliance penalty/shutoff exposure starts at $138+.

Longmont & Boulder County, CO Backflow & Grease Trap FAQs

Direct answers sourced from City of Longmont Water Utility and City of Longmont Wastewater Pretreatment Program regulations.

How are Longmont backflow test reports submitted in 2026?

Beginning February 2, 2026, the City of Longmont requires all backflow testers to submit test reports electronically through the SwiftComply portal ($10 portal fee per passing test). Emailed reports to backflow@longmontcolorado.gov are no longer accepted.

What happens if I miss my City of Longmont annual backflow test deadline?

If you do not submit a passing test through a certified tester during the annual window, the City of Longmont can assign a city contractor to perform the test and bill a mandatory $137.50 per-device fee directly to your utility bill, or initiate Notice of Violation enforcement.

What is Longmont's rule if an underground irrigation Double Check Valve Assembly (DCVA) fails?

Under Longmont's updated cross-connection rules, a failed irrigation DCVA must either be replaced with an above-ground Reduced Pressure (RP) assembly within 60 days, or repaired and placed on a strict two-year replacement schedule.

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