Calcasieu Parish County, LA · PWSID LA1019053
Calcasieu Parish WW District No 4 lead service lines
No inventory counts on file
Calcasieu Parish WW District No 4 serves about 5,340 people in Calcasieu Parish County, LA, but EPA's EPA SDWIS service line inventory, 2026 Q3 data has no service line counts for it. That doesn't mean the system has no lead. Ask the utility for its inventory, or check your own pipe with the steps below.
Lead test results
Calcasieu Parish WW District No 4's most recent 90th-percentile lead result (Jan 2022–Dec 2024) was 2 ppb, below both the 15 ppb action level and the 10 ppb level that takes effect in 2027. This means 90% of homes sampled were at or below that level; individual homes, especially those with lead lines, can be higher.
Lead and Copper Rule 90th-percentile results reported to EPA, in parts per billion. Dashed lines: 15 ppb action level and the 10 ppb level from November 1, 2027.
Lead rule violations
EPA's data lists 1 Lead and Copper Rule violation since 2015 for Calcasieu Parish WW District No 4. Health-based violations are treatment failures, such as corrosion control or public education; the rest are missed monitoring or reporting.
| Began | Violation | Status |
|---|---|---|
| Jan 2019 | Lead consumer notice not delivered or reported | Returned to compliance |
Source: EPA SDWIS violation records for the Lead and Copper Rule.
Where the water comes from
Calcasieu Parish WW District No 4's main water source is groundwater (wells). It buys treated water from City of Westlake Water System. The seller treats the water, including corrosion control that keeps lead from dissolving out of pipes, while Calcasieu Parish WW District No 4 is responsible for its own service line inventory and replacement program.
Source: EPA SDWIS water system and facility records.
Check your own address
These counts cover the whole system. To see whether your line is lead, use the utility's address-level inventory. Utilities had to prepare one by October 16, 2024 and make it publicly accessible; systems serving more than 50,000 people must post it online.
No map yet? Do the 2-minute scratch and magnet test on the pipe where water enters your home.
Protect your drinking water now
If your line is lead, galvanized or unknown, filter water for drinking, cooking and baby formula. Use a filter certified to NSF/ANSI 53 for lead. Run cold water for a few minutes after it sits for hours, and never use hot tap water for cooking.
How to pick a lead-certified filter · How to test your water for lead
Getting the line replaced
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Calcasieu Parish WW District No 4 whether it replaces the private side for free or with a cost share before you hire anyone. If you want it done sooner, or your utility doesn't cover your side, a licensed plumber can quote it. What replacement costs.
County pages: Lead pipes in Calcasieu Parish
Other water systems nearby
| System | Lead + galv. | Unknown |
|---|---|---|
| City of Sulphur Water System | 23 | 889 |
| Lawco - Dequincy Water System | 27 | 1,794 |
| Calcasieu Parish WW District No 5 | 0 | 481 |
| City of Westlake Water System | 0 | 3,040 |
| Magnolia-Lake Street | 0 | 32 |
| Mossville WW District No 2 | 0 | 156 |
| Magnolia-Utility Service of Lake Charles | 0 | 63 |
| Magnolia-Brigas Estates | 0 | 77 |
Check another water system
Questions
Does Calcasieu Parish WW District No 4 have lead pipes?
Calcasieu Parish WW District No 4 has not reported service line counts in EPA's data. Ask the utility for its lead service line inventory, which it was required to prepare by October 16, 2024.
How do I check if my home's service line is lead?
Look up your address on Calcasieu Parish WW District No 4's official service line inventory, which utilities must make publicly available. You can also scratch the pipe where it enters your home: lead is soft, dull gray, scratches to shiny silver and does not attract a magnet.
When will Calcasieu Parish WW District No 4 replace lead service lines?
Under EPA's Lead and Copper Rule Improvements, most systems must replace lead and galvanized-requiring-replacement lines by December 31, 2037, starting from November 1, 2027. The rule is being challenged in court, so dates could change. Many utilities run free or cost-share programs now.
Has Calcasieu Parish WW District No 4 had lead violations?
EPA's data shows 1 Lead and Copper Rule violation since 2015 for Calcasieu Parish WW District No 4.
Which water filters remove lead?
Use a filter certified to NSF/ANSI Standard 53 for lead reduction, or NSF/ANSI 58 for reverse osmosis. Check the certification on NSF's listings, not just the box.
Embed or cite this data
Local news sites, blogs and community groups can embed this card. It updates when EPA releases new data.
Citation: Lead Pipe Map, "Calcasieu Parish WW District No 4 lead service lines," https://leadpipemap.com/la/calcasieu-parish-ww-district-no-4/. Source: EPA SDWIS service line inventory, 2026 Q3. Download the full dataset on the data page.