Crofton-Odenton Water System water quality
Odenton, MD · serves 62,986 people (22,070 connections) · Groundwater · Local government · EPA ID MD0020008
Data: U.S. EPA · How we read the data · How we check it
Summary
No limits exceeded in the data EPA has, but the record is incomplete: no lead results since 2019.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 2 samples (2023–2025).
- Lead
- Out of dateEPA's national database has no lead results for this system since 2019 (then 0 ppb, 90th percentile). Systems this size normally test every one to three years, so this most likely means newer results were not reported to EPA, not that testing stopped. Ask the utility for its latest results.
- Violations
- None health-basedNo health-based violations since 2016.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Crofton-Odenton Water System's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (443) 790-5373. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 1 entry point tested Jun 2024 to Nov 2024. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Detected in 1 of 2 samples. Highest result 9.06 ppb. EPA's non-enforceable screening level is 10 ppb. Below screening level The screening level is how EPA decides what to study further, not a health limit. There is no federal limit for lithium and no filter is certified to remove it. About lithium.
Lead and copper
Latest 90th percentile: 0 ppb lead (Jan 2017 – Dec 2019). No results since 2019
This is the newest lead result in EPA's national database. Utilities report lead results to their state, and states pass them to EPA. Gaps like this usually mean the newer results did not reach EPA's database, not that the utility stopped testing. Results this old may not reflect the water today. Ask the utility or your state drinking water program for the latest lead monitoring.
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2017 – Dec 2019 | 0 ppb |
| Jan 2014 – Dec 2016 | -5 ppb |
| Jan 2011 – Dec 2013 | 1 ppb |
Earlier results (9)
| Jan 2008 – Dec 2010 | 0 ppb |
| Jan 2005 – Dec 2007 | 0 ppb |
| Jan 2002 – Dec 2004 | 0 ppb |
| Jan 1999 – Dec 2001 | 0 ppb |
| Jan 1996 – Dec 1998 | 5 ppb |
| Jan 1995 – Dec 1995 | 5 ppb |
| Jan 1994 – Dec 1994 | 0 ppb |
| Jan 1993 – Dec 1993 | 0 ppb |
| Jul 1992 – Dec 1992 | 0 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 1.43 ppb | 300 ppb |
| Strontium | 0.034 ppm | 1.5 ppm |
| Vanadium | 0.39 ppb | 21 ppb |
| Chromium-6 | 0.043 ppb | – |
| Chlorate | 590 ppb | 210 ppb |
Where it serves
Odenton, Crofton, Severna Park
ZIP codes the system reported serving: 21108, 21113, 21114
Nearby utilities
- Fort George G. Meade Water System Fort Meade · 4 mi
- Glen Burnie-Broadneck Water System Glen Burnie · 8 mi
- Washington Suburban Sanitary Commission Laurel · 9 mi
- Howard County Dept. of Public Works Distribution Columbia · 13 mi
- City of Baltimore Baltimore · 17 mi
- City of Rockville Rockville · 25 mi
Questions
Is Crofton-Odenton Water System water safe to drink?
Crofton-Odenton Water System has no health-based violations since 2016. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Crofton-Odenton Water System water have PFAS?
EPA tested Crofton-Odenton Water System for 29 PFAS between Jun 2024 and Nov 2024 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in Crofton-Odenton Water System water?
The most recent 90th-percentile lead result for Crofton-Odenton Water System is 0 ppb, for the period ending Dec 2019, which is more than five years old. The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for MD0020008: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID MD0020008).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Crofton-Odenton Water System at (443) 790-5373, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.