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MyTapWater.us

PWSID NC0467035

ONSLOW WTR AND SEWER AUTHORITY

Community water system serving JACKSONVILLE, NC

See also: all utilities in Jacksonville · utilities by ZIP 28540

Population served
157k
Source
Groundwater
Status
Active

Current water quality

Current measurements are below regulatory thresholds

Lead measured at 0 mg/L in the most recent sample (below regulatory thresholds).

Past 5 years: 2 health-based violations on file, all marked Resolved or Archived. See compliance history below.

Risk classification follows EPA published MCL / MCLG / HAL values with caution and concern bands reviewed by a clinician. Past resolved violations do not influence this badge. See methodology.

Lead service line inventory

Utility reports no confirmed lead service lines

ONWASA announced in November 2024 that the initial lead service line inventory required by NC was complete and no lead service lines were detected. An ArcGIS dashboard is published for customer lookup.

  • 0 confirmed lead service lines

Note: Specific category counts not in fetchable HTML; dashboard at lead-service-line-inventory-onwasa.hub.arcgis.com.

What to do if your service line might be lead
  1. Ask your utility to check the service-line classification for your specific address. Many utilities provide a public address-lookup tool linked from the inventory page.
  2. Get on the replacement queue. Under the LCRI, utilities must replace all lead and galvanized-requiring- replacement lines within 10 years (clock generally starts November 2027). Some prioritize requests.
  3. Until the line is replaced: flush the tap 30 seconds after long stagnation, use cold water for drinking and cooking, and consider an NSF/ANSI 53 lead-rated tap filter.
  4. Talk to your clinician about a blood lead test for anyone in the home, especially a pregnant person or a child under 6. Lead in drinking water guide.

Inventory data sourced from Onslow Water and Sewer Authority (reporting date November 1, 2024; retrieved May 12, 2026 ; curator confidence: low ). Confirmed against the original source automatically each month; see methodology.

Lead and Copper Rule sample data

The most recent measurement per contaminant from EPA's Lead and Copper Rule (LCR) sample table. This is the only per-system sample data EPA publishes in the bulk SDWIS download; values for other regulated contaminants (TTHMs, nitrate, arsenic, etc.) are tracked on this page only when they trigger a violation.

Most recent measurements per contaminant (Lead and Copper Rule) . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent Date Risk
PB90
0 mg/L December 31, 2025 Below regulatory thresholds

Lead has no safe level (MCLG=0). LCR action level is 0.015 mg/L for the 90th-percentile sample; the LCRI (Oct 2024) lowers the action level to 0.010 mg/L effective Nov 2027. Caution at any detection above LOD; concern anchored to the future LCRI value (0.010 mg/L) for forward consistency. Learn more about Lead. Source.

PFAS and emerging contaminants (UCMR 5)

EPA's fifth Unregulated Contaminant Monitoring Rule cycle (2023; 2025) tested every public water system serving over 3,300 people for 29 per- and polyfluoroalkyl substances (PFAS) and lithium. This system was tested 250 times across UCMR 5; 1 of those substances were detected in at least one sample. Most-recent detection per contaminant shown below.

Most recent UCMR 5 detection per contaminant . Sorted by risk: concern first, then caution, then unrated, then safe.
Contaminant Most recent detection Date Risk
0.0108 mg/LAugust 1, 2023 Below regulatory thresholds

HAL only; not enforceable. UCMR-monitored. Learn more about lithium. Source.

Tested but not detected (29 contaminants)

EPA tested for these substances and every sample was below the minimum reporting level. Absence of detection does not mean true zero; it means below the laboratory's quantitation threshold.

Compliance history

EPA-recorded violations against this system over the last 5 years. Health-based violations are when a measured limit was exceeded; monitoring and reporting items are paperwork issues (missed sample dates, late filings) that do not themselves indicate unsafe water.

2 resolved health-based violations in the last 5 years

All 2 health-based violations in the last 5 years are marked Resolved or Archived. Past violations do not represent current water quality.

Health-based violations in the last 5 years
Period start Contaminant What happened Status
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Inventory Resolved
13 monitoring and reporting item s (paperwork) · these are not health risks
Monitoring and reporting items in the last 5 years
Period start Relates to Item Status
October 28, 2024 Public Notice Public Notification Violation for NPDWR Violation Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
October 17, 2024 Lead and Copper Rule Revisions LSL Reporting Resolved
December 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
December 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
December 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
December 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
December 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
July 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
July 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
July 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
July 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
July 11, 2023 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
219 older violation s (more than 5 years ago)
Violations older than 5 years (219 total)
Period start Relates to Item Status
June 28, 2020 Public Notice Public Notification Violation for NPDWR Violation Resolved
June 11, 2019 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
June 11, 2019 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
June 11, 2019 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
June 11, 2019 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
June 11, 2019 Revised Total Coliform Rule Report Sample Result/Fail Monitor (RTCR) Resolved
April 3, 2014 Public Notice Public Notification Violation for NPDWR Violation Resolved
February 27, 2014 Public Notice Public Notification Violation for NPDWR Violation Resolved
October 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
October 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
October 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
October 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
October 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
July 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
July 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
July 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
July 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
July 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
January 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
January 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
January 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
January 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
January 1, 2013 Tthm Maximum Contaminant Level Violation, Average Resolved
December 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
December 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
December 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
December 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
December 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
June 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
June 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
June 2, 2010 E. Coli Monitoring, Source Water (GWR) Resolved
March 1, 2010 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
March 1, 2010 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
March 1, 2010 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
March 1, 2010 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
March 1, 2010 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
January 1, 2010 Chlorine Monitoring and Reporting (DBP) Resolved
January 1, 2010 Chlorine Monitoring and Reporting (DBP) Resolved
January 1, 2010 Chlorine Monitoring and Reporting (DBP) Resolved
January 2, 2009 Stage 2 Disinfectants and Disinfection Byproducts Rule Failure Submit IDSE/Subpart V Plan Rpt Resolved
July 1, 2007 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2007 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2007 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2007 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2007 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2006 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2006 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2006 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2006 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
July 1, 2006 Lead and Copper Rule Follow-up Or Routine LCR Tap M/R Resolved
June 1, 2006 Coliform (Tcr) Maximum Contaminant Level Violation, Monthly (TCR) Resolved
June 1, 2006 Coliform (Tcr) Maximum Contaminant Level Violation, Monthly (TCR) Resolved
June 1, 2006 Coliform (Tcr) Maximum Contaminant Level Violation, Monthly (TCR) Resolved
June 1, 2006 Coliform (Tcr) Maximum Contaminant Level Violation, Monthly (TCR) Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 Dalapon Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Adipate Monitoring, Regular Resolved
January 1, 2005 Oxamyl Monitoring, Regular Resolved
January 1, 2005 Dinoseb Monitoring, Regular Resolved
January 1, 2005 Carbofuran Monitoring, Regular Resolved
January 1, 2005 Heptachlor Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 2,4-D Monitoring, Regular Resolved
January 1, 2005 2,4,5-Tp Monitoring, Regular Resolved
January 1, 2005 Benzo(a)Pyrene Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 Total Polychlorinated Biphenyls (Pcb) Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Endrin Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Di(2-Ethylhexyl) Phthalate Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 Pentachlorophenol Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 Bhc-Gamma Monitoring, Regular Resolved
January 1, 2005 1,2-Dibromo-3-Chloropropane Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Ethylene Dibromide Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Hexachlorobenzene Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Chlordane Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 Heptachlor Epoxide Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Picloram Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Lasso Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Toxaphene Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Hexachlorocyclopentadiene Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Simazine Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Atrazine Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2005 Methoxychlor Monitoring, Regular Resolved
January 1, 2004 Dalapon Monitoring, Regular Resolved
January 1, 2004 Dalapon Monitoring, Regular Resolved
January 1, 2004 Dalapon Monitoring, Regular Resolved
January 1, 2004 Dalapon Monitoring, Regular Resolved
January 1, 2002 Asbestos Monitoring, Regular Resolved
January 1, 2002 Asbestos Monitoring, Regular Resolved
February 1, 2000 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
February 1, 2000 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved
February 1, 2000 Coliform (Tcr) Monitoring, Routine Major (TCR) Resolved

Where to see every contaminant this utility tested for

EPA's bulk SDWIS dataset gives MyTapWater.us per-system measured values for lead and copper, plus violation records for everything else. To see every regulated contaminant this utility tested for in the past year (TTHMs, HAA5, nitrate, arsenic, fluoride, chromium, etc.) with measured values, read the utility's Consumer Confidence Report (CCR).

Every community water system is required by EPA to publish a CCR annually, by July 1, listing every contaminant they sampled, the measured value, the federal limit, and any health-based exceedances. Most utilities post the report online; some mail it with your bill.

How to find ONSLOW WTR AND SEWER AUTHORITY's CCR:

  • Search "ONSLOW WTR AND SEWER AUTHORITY consumer confidence report" in your browser. The PDF is usually on the utility's own website.
  • Or check EPA's CCR finder for NC0467035 (some utilities upload theirs to EPA, some do not).
  • Or call the utility directly. Their phone number is in the contact section below.

Contact this utility

Public administrative contact information for this water system, as filed with the EPA. Use this to ask about your service line, request your home's lead status, or report a water quality issue.

Administrator
BROWN, SETH (BROWN, SETH)
Phone
910-937-7520
Email
sbrown@onwasa.com
Mailing address
228 GEORGETOWN ROAD
ONWASA
JACKSONVILLE, NC, 28540