Hi Folks,

Well, the cyanobacteria warning for Province Lake has been lifted.  The water has been looking quite good lately.  See details from DES below.

Regards,

The PLA

———- Forwarded message ———
From: DES: Harmful Algal Bloom Program<DES.HAB@des.nh.gov>
Date: Tue, Sep 23, 2025 at 12:01 PM
Subject: Cyanobacteria WARNING REMOVED – Province Lake
To: DES: Harmful Algal Bloom Program <DES.HAB@des.nh.gov>

Hi all,

The cyanobacteria warning at your waterbody has been REMOVED, please see below for details.  

Waterbody	Province Lake, Effingham/Wakefield
Status	WARNING
Issued	8/13/2025
Removed	9/23/2025
Notes	There have been no reports of bloom conditions. Additionally, NHDES staff visited Province Lake on 9/22/25 and no bloom conditions were observed. There were very low levels of cyanobacteria present in three samples that were collected, which are representative of background levels.   Please report through the Bloom Report Form if you bloom conditions reappear.

Please visit the Healthy Swimming Mapper for the most current information about bloom location, status, and severity.

NHDES advises lake users to not swim in or near the vicinity of where bloom material is visible. Please also keep pets and livestock out of areas where bloom material is observed. It is suggested that local authorities post the 2025 cyanobacteria sign at public access points while a warning is in place to alert the public of current conditions.  

Please forward this email to other residents / community members who may benefit from this information. If they would like to be added to the email distribution list, please have them sign up to be directly included on future communications from NHDES. If you prefer to no longer receive these sampling updates, simply respond, and indicate “unsubscribe”.

Best,

The CyanoHAB Team
Cyanobacteria Harmful Algal Bloom Program
Watershed Management Bureau, Water Division
New Hampshire Department of Environmental Services
29 Hazen Drive, P.O. Box 95, Concord, NH 03302-0095
603-848-8094   hab@des.nh.gov