Is This In Your Water?← Maryland index
Maryland · ZIP 20619 · EPA MD1180005

Is this in California's water?

Charlotte Hall · serves 615 people · groundwater · 226 connections
2
violations on the federal EPA record
0
health-based — a protective limit exceeded
615
people drink this water every day

On paper this system is compliant, but the EPA record shows 2 violations — mostly missed testing or reporting. What isn't measured can't be caught.

Nitrate›

Nitrate comes from fertilizer, septic and wastewater. Above the limit it can starve infants of oxygen and is linked to cancer risk.

Read the rule → EPA · Safe Drinking Water Act standards
Total Trihalomethanes (TTHM)›

Total trihalomethanes are cancer-linked byproducts formed when chlorine disinfects water; federal rules cap them and require regular testing.

Read the rule → EPA · Disinfection Byproducts Rules

The federal record.

RECORDmissed required testing or reportingNitrate2017›

The utility didn't complete required testing or paperwork on time. The water wasn't necessarily bad — but what isn't measured can't be caught.

Nitrate: Nitrate comes from fertilizer, septic and wastewater. Above the limit it can starve infants of oxygen and is linked to cancer risk.

Read the rule → EPA · Safe Drinking Water Act standards
Who is responsibleCharlotte Hall · attn Cantrell, Dwayne · 240-925-3139 — the utility is required to answer questions about its record. Ask them about it.Their office: St Mary’s County Metropolitan Commiss., California ↗
RECORDmissed required testing or reportingTotal Trihalomethanes (TTHM)2022›

The utility didn't complete required testing or paperwork on time. The water wasn't necessarily bad — but what isn't measured can't be caught.

Total Trihalomethanes (TTHM): Total trihalomethanes are cancer-linked byproducts formed when chlorine disinfects water; federal rules cap them and require regular testing.

Read the rule → EPA · Disinfection Byproducts Rules
Who is responsibleCharlotte Hall · attn Cantrell, Dwayne · 240-925-3139 — the utility is required to answer questions about its record. Ask them about it.Their office: St Mary’s County Metropolitan Commiss., California ↗

Source: U.S. EPA Safe Drinking Water Information System (SDWIS), system MD1180005. “Compliant” means clearing federal limits — many unchanged for ~20 years. Health guidelines from independent scientists are often stricter. Results vary by home, plumbing and date.

Fix it, honestly.

Dissolved metals · nitrate

Reverse osmosis

NSF-58 certified under-sink RO — the only tech that broadly removes dissolved contaminants at the tap.

Chlorine · taste · odor

Catalytic carbon

NSF-42 whole-house carbon cuts chlorine, chloramine and the pool-water taste.

First step

Filter bottle

Certified grab-and-go protection while you decide on the whole-home fix.

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