Non-Transient Non-Community Water System · PWS CO0207401
Jacobs Corner
Operator location Boulder, Colorado - smaller served population (≤ 999) at 250 people served; 120 SDWIS violations on record from surface water sources.
- 250
- People served (this PWS)
- 120
- EPA violations (this PWS)
- 18
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Jacobs Corner standing, high SDWIS violation third
250 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 15% is middle-third health share (≤ 23%).
The verdict
Jacobs Corner sits in the upper third of the sitemap cohort by violation count (120), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (250; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 15% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 120
- Total EPA violations on record
- 15%
- Health-based (MCL / treatment failure)
- 250
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 3
- County
- Boulder
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 99
- Treatment Tech Violations
- 18
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 28 | 2023 |
| Interim Enhanced Surface Water Treatment Rule | MR | 21 | 2023 |
| Surface Water Treatment Rule | TT | 14 | 2018 |
| E. COLI | MR | 6 | 2017 |
| Interim Enhanced Surface Water Treatment Rule | TT | 4 | 2015 |
| Nitrate | MR | 4 | 2013 |
| Lead and Copper Rule | MR | 4 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2010 |
| HEXACHLOROBENZENE | MR | 3 | 2008 |
| Methoxychlor | MR | 3 | 2008 |
| BHC-GAMMA | MR | 3 | 2008 |
| Endrin | MR | 3 | 2008 |
| Revised Total Coliform Rule | Other | 3 | 2024 |
| Hexachlorocyclopentadiene | MR | 3 | 2008 |
| Heptachlor | MR | 3 | 2008 |
| Toxaphene | MR | 3 | 2008 |
| Chlordane | MR | 3 | 2008 |
| Total Polychlorinated Biphenyls (PCB) | MR | 3 | 2008 |
| Heptachlor epoxide | MR | 3 | 2008 |
| TTHM | MR | 3 | 2010 |
Violation Count vs. the National Corpus
Jacobs Corner has 120 recorded EPA violations, 77% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 23% carry more. 15% of this system's own violations are health-based (18 of 120), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
120 Higher than most more violations than 77% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Jacobs Corner
EPA SDWIS lists 250 people served and 3 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
120 violations · 250 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Jacobs Corner
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Colorado compares on the same EPA violation measures. Colorado systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.