1. Data Controller & Operator Identity
SewerLineCalculator.com is owned and operated by Tarquin Barnsby (trading as SewerLineCalculator.com), registered with the UK Information Commissioner's Office (ICO Registration Number: ZC136598). Users with inquiries regarding data protection, consent withdrawal, or California Consumer Privacy Act (CCPA) opt-outs may contact our designated compliance officer at [email protected].
2. Information We Collect & Method of Capture
We collect both non-personally identifiable technical telemetry (including IP addresses, browser user agent strings, regional geography, and on-page calculation inputs) and voluntarily submitted personally identifiable contact information. When you request local contractor estimates through our online forms, you may provide your full name, physical street address, 5-digit ZIP code, email address, and primary telephone number. We also utilize third-party verification scripts including ActiveProspect TrustedForm to cryptographically record express consent.
3. Downstream Partner Routing & Lead Clearinghouse
When you submit your contact information to receive contractor quotes, your information is securely transmitted over TLS 1.3 cryptographic channels to our commercial clearinghouse partner Ranked & Ready (https://rankedandready.net) and distributed to verified local contractor networks, including Networx Systems, Inc. By checking our consent box, you authorize up to four licensed local underground utility or plumbing contractors to contact you via telephone, SMS/MMS, and email.
4. State Privacy Rights (CCPA/CPRA & VCDPA)
Residents of California, Virginia, Colorado, Connecticut, and other states with comprehensive data privacy statutes enjoy specific rights regarding their personal data, including the right to know what personal information has been collected, the right to request deletion of personal information, and the right to opt-out of the sale or sharing of personal information. To exercise your statutory privacy rights, email us with the subject line 'Statutory Privacy Request'.
5. Cookies, Machine Telemetry & AI Discovery
Our site utilizes essential session cookies and performance telemetry to maintain calculator state across page reloads. We participate in the AnswerRail machine-readable index protocol (https://answerrail.com/verify/sewerlinecalculator.com), allowing AI search engines to parse our public engineering formulas without capturing personal visitor records.
Data Category Retention & Third-Party Disclosure Schedule
| Data Category | Purpose of Processing | Third-Party Recipients | Statutory Retention Period |
|---|---|---|---|
| Hydraulic Calculator Inputs | Real-time on-screen IPC slope & excavation math | None (processed client-side in browser session) | Session duration (0 days permanent storage) |
| Contact Information (Name, Phone) | Contractor quotation dispatch & telephone routing | Ranked & Ready, Networx Systems, Inc., Licensed Plumbers | 24 calendar months (TCPA audit compliance) |
| TrustedForm Certificate Token | Independent proof of prior express written consent | ActiveProspect, Inc., Ranked & Ready Compliance Desk | 5 years (federal statutory limitation period) |
| IP & Technical Telemetry | DDoS mitigation, geographic routing & fraud defense | Cloudflare, Inc. (Edge CDN & WAF) | 90 calendar days |
Frequently Asked Engineering & Civil Questions
Who is the legal operator of SewerLineCalculator.com?
SewerLineCalculator.com is operated by Tarquin Barnsby (trading as SewerLineCalculator.com), registered with the UK Information Commissioner's Office under Registration Number ZC136598.
Will my phone number be sold to general telemarketing robocallers?
No. Your phone number is strictly routed to our verified contractor clearinghouse (Ranked & Ready and Networx Systems, Inc.) solely for the purpose of matching you with licensed underground utility and plumbing professionals in your county.
How can I revoke my consent or request data deletion?
You can revoke consent at any time by emailing [email protected] or by replying STOP to any automated text message sent by our dispatch system.